USPC Patent Classifications

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Class 501 compositions: ceramic
uspcdescription
501/1501 compositions: ceramic/(1) ceramic compositions
501/2501 compositions: ceramic/(1) ceramic compositions (2) devitrified glass-ceramics
501/3501 compositions: ceramic/(1) ceramic compositions (2) devitrified glass-ceramics (3) halogen containing crystalline phase (e.g., fluormica, etc.)
501/4501 compositions: ceramic/(1) ceramic compositions (2) devitrified glass-ceramics (4) silica containing crystalline phase (e.g., stuffed quartz, crystobalite, etc.)
501/5501 compositions: ceramic/(1) ceramic compositions (2) devitrified glass-ceramics (5) binary, ternary, quaternary, etc., metal silicate crystalline phase (e.g., mullite, diopside, sphene, plagioclase, slagcerams free of alumina, etc.)
501/6501 compositions: ceramic/(1) ceramic compositions (2) devitrified glass-ceramics (5) binary, ternary, quaternary, etc., metal silicate crystalline phase (e.g., mullite, diopside, sphene, plagioclase, slagcerams free of alumina, etc.) (6) alkali metal aluminosilicate crystalline phase
501/7501 compositions: ceramic/(1) ceramic compositions (2) devitrified glass-ceramics (5) binary, ternary, quaternary, etc., metal silicate crystalline phase (e.g., mullite, diopside, sphene, plagioclase, slagcerams free of alumina, etc.) (6) alkali metal aluminosilicate crystalline phase (7) lithium aluminosilicate (e.g., spodumeme, eucryptite, petalite, etc.)
501/8501 compositions: ceramic/(1) ceramic compositions (2) devitrified glass-ceramics (5) binary, ternary, quaternary, etc., metal silicate crystalline phase (e.g., mullite, diopside, sphene, plagioclase, slagcerams free of alumina, etc.) (8) divalent metal oxide aluminosilicate crystalline phase (e.g., anorthite, slagcerams, etc.)
501/9501 compositions: ceramic/(1) ceramic compositions (2) devitrified glass-ceramics (5) binary, ternary, quaternary, etc., metal silicate crystalline phase (e.g., mullite, diopside, sphene, plagioclase, slagcerams free of alumina, etc.) (8) divalent metal oxide aluminosilicate crystalline phase (e.g., anorthite, slagcerams, etc.) (9) magnesium aluminosilicate (e.g., cordierite, etc.)
501/10501 compositions: ceramic/(1) ceramic compositions (2) devitrified glass-ceramics (10) nonsilica and nonsilicate crystalline phase (e.g., spinel, barium titanate, etc.)
501/11501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions
501/12501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (12) made by gel route
501/13501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (13) radiation color change responsive
501/14501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (14) enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients)
501/15501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (14) enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) (15) fusion seals (frit plus material other than glass)
501/16501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (14) enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) (16) plural diverse frits
501/17501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (14) enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) (17) frit plus material other than glass (e.g., color, opacifier, mill additions, etc.)
501/18501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (14) enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) (17) frit plus material other than glass (e.g., color, opacifier, mill additions, etc.) (18) titanium or zirconium compound as other material
501/19501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (14) enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) (17) frit plus material other than glass (e.g., color, opacifier, mill additions, etc.) (19) free metal as other material
501/20501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (14) enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) (17) frit plus material other than glass (e.g., color, opacifier, mill additions, etc.) (20) with vehicle or suspending agent (i.e., slip)
501/21501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (14) enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) (21) chemically specified frit compositions
501/22501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (14) enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) (21) chemically specified frit compositions (22) lead containing
501/23501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (14) enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) (21) chemically specified frit compositions (22) lead containing (23) and titanium or zirconium
501/24501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (14) enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) (21) chemically specified frit compositions (24) phosphorous containing
501/25501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (14) enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) (21) chemically specified frit compositions (25) halogen containing
501/26501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (14) enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) (21) chemically specified frit compositions (26) zinc containing
501/27501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (27) glass batch forming compositions (i.e., glass batch compositions)
501/28501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (27) glass batch forming compositions (i.e., glass batch compositions) (28) slag containing
501/29501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (27) glass batch forming compositions (i.e., glass batch compositions) (29) pellet or agglomerate containing
501/30501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (27) glass batch forming compositions (i.e., glass batch compositions) (30) halogen containing
501/31501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (27) glass batch forming compositions (i.e., glass batch compositions) (31) uncombined silica containing (e.g., sand)
501/32501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (32) glass and material other than glass (e.g., crystal glass, opal glass, etc.)
501/33501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (33) beads
501/34501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (33) beads (34) reflective
501/35501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (35) fibers
501/36501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (35) fibers (36) mineral fibers (e.g., slag wool, rock wool, mineral wool, etc.)
501/37501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (35) fibers (37) optical fibers
501/38501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (35) fibers (38) titanium or zirconium containing
501/39501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (39) pore-forming
501/40501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (40) nonoxide glasses (e.g., fluoride glasses, etc.)
501/41501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (41) nonsilicate oxide glasses
501/42501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (41) nonsilicate oxide glasses (42) germanium containing
501/43501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (41) nonsilicate oxide glasses (43) halogen containing
501/44501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (41) nonsilicate oxide glasses (43) halogen containing (44) fluorine and phosphorus containing
501/45501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (41) nonsilicate oxide glasses (45) phosphorus containing
501/46501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (41) nonsilicate oxide glasses (45) phosphorus containing (46) and titanium, zirconium, vanadium, tungsten, or molybdenum
501/47501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (41) nonsilicate oxide glasses (45) phosphorus containing (47) and boron
501/48501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (41) nonsilicate oxide glasses (45) phosphorus containing (48) and aluminum or beryllium
501/49501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (41) nonsilicate oxide glasses (49) boron containing
501/50501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (41) nonsilicate oxide glasses (49) boron containing (50) and yttrium or rare earth (i.e., elements with atomic numbers 39, 57-71, or 89+)
501/51501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (41) nonsilicate oxide glasses (49) boron containing (50) and yttrium or rare earth (i.e., elements with atomic numbers 39, 57-71, or 89+) (51) and zirconium, titanium, tantalum, or niobium
501/52501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (41) nonsilicate oxide glasses (49) boron containing (52) and aluminum or beryllium
501/53501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing
501/54501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (54) more than 90 percent by weight silica
501/55501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica
501/56501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (56) and halogen or nitrogen
501/57501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (56) and halogen or nitrogen (57) fluorine
501/58501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (56) and halogen or nitrogen (57) fluorine (58) and boron
501/59501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (56) and halogen or nitrogen (57) fluorine (58) and boron (59) and aluminum
501/60501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (60) and lead
501/61501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (60) and lead (61) and boron
501/62501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (60) and lead (62) and aluminum
501/63501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (63) and phosphorus, niobium, or tantalum
501/64501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (64) and yttrium or rare earth (i.e., elements with atomic numbers 39 or 57-71)
501/65501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (65) and boron
501/66501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (65) and boron (66) and aluminum
501/67501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (65) and boron (66) and aluminum (67) and zinc or zirconium
501/68501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (68) and aluminum or iron compound
501/69501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (68) and aluminum or iron compound (69) and divalent metal oxide (e.g., oxides of zinc, cadmium, beryllium, alkaline earth metal, magnesium, etc.)
501/70501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (68) and aluminum or iron compound (69) and divalent metal oxide (e.g., oxides of zinc, cadmium, beryllium, alkaline earth metal, magnesium, etc.) (70) calcium oxide containing
501/71501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (68) and aluminum or iron compound (69) and divalent metal oxide (e.g., oxides of zinc, cadmium, beryllium, alkaline earth metal, magnesium, etc.) (70) calcium oxide containing (71) and chromium, nickel, or cobalt
501/72501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (55) 40 percent - 90 percent by weight silica (72) and divalent metal oxide (e.g., oxides of zinc, cadmium, beryllium, alkaline earth metal, magnesium, etc.)
501/73501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (73) less than 40 percent by weight silica
501/74501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (73) less than 40 percent by weight silica (74) and lead
501/75501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (73) less than 40 percent by weight silica (74) and lead (75) and boron
501/76501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (73) less than 40 percent by weight silica (74) and lead (75) and boron (76) and zinc
501/77501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (73) less than 40 percent by weight silica (77) and boron
501/78501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (73) less than 40 percent by weight silica (77) and boron (78) and rare earth (i.e., elements with atomic number 39 or 57-71)
501/79501 compositions: ceramic/(1) ceramic compositions (11) glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions (53) silica containing (73) less than 40 percent by weight silica (77) and boron (79) and zinc
501/80501 compositions: ceramic/(1) ceramic compositions (80) pore-forming
501/81501 compositions: ceramic/(1) ceramic compositions (80) pore-forming (81) by use of organic combustible material
501/82501 compositions: ceramic/(1) ceramic compositions (80) pore-forming (81) by use of organic combustible material (82) of resin or vegetable origin material
501/83501 compositions: ceramic/(1) ceramic compositions (80) pore-forming (81) by use of organic combustible material (82) of resin or vegetable origin material (83) of cellulosic material
501/84501 compositions: ceramic/(1) ceramic compositions (80) pore-forming (84) by gas blowing, foaming agent, or in situ reactive gas generation
501/85501 compositions: ceramic/(1) ceramic compositions (80) pore-forming (85) by volatilizing or heat expansion of water or other noncombustible material
501/86501 compositions: ceramic/(1) ceramic compositions (86) synthetic precious stones (e.g., single crystals, etc.)
501/87501 compositions: ceramic/(1) ceramic compositions (87) carbide or oxycarbide containing
501/88501 compositions: ceramic/(1) ceramic compositions (87) carbide or oxycarbide containing (88) silicon carbide
501/89501 compositions: ceramic/(1) ceramic compositions (87) carbide or oxycarbide containing (88) silicon carbide (89) and aluminum compound
501/90501 compositions: ceramic/(1) ceramic compositions (87) carbide or oxycarbide containing (88) silicon carbide (90) and carbonaceous material
501/91501 compositions: ceramic/(1) ceramic compositions (87) carbide or oxycarbide containing (88) silicon carbide (91) and different carbide
501/92501 compositions: ceramic/(1) ceramic compositions (87) carbide or oxycarbide containing (88) silicon carbide (92) and boride, silicide, nitride, or oxynitride
501/93501 compositions: ceramic/(1) ceramic compositions (87) carbide or oxycarbide containing (93) plural carbides (i.e., carbides of plural metals) containing
501/94501 compositions: ceramic/(1) ceramic compositions (94) refractory
501/95.1501 compositions: ceramic/(1) ceramic compositions (94) refractory (95.1) fiber or fiber containing
501/95.2501 compositions: ceramic/(1) ceramic compositions (94) refractory (95.1) fiber or fiber containing (95.2) composites (continuous matrix with dispersed fiber phase)
501/95.3501 compositions: ceramic/(1) ceramic compositions (94) refractory (95.1) fiber or fiber containing (95.2) composites (continuous matrix with dispersed fiber phase) (95.3) whisker containing
501/96.1501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing
501/96.2501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (96.2) from organometallic precursor
501/96.3501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (96.3) boride or silicide containing
501/96.4501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (96.4) boron nitride containing
501/96.5501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (96.5) silicon oxynitride, silicon carbonitride, or silicon oxycarbonitride containing (i.e., siaobnc, siacbnc, or siaobccnd)
501/97.1501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (97.1) silicon nitride containing (si3n4)
501/97.2501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (97.1) silicon nitride containing (si3n4) (97.2) with trivalent metal compound (e.g., yttrium, rare earth, or aluminum compound, etc.)
501/97.3501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (97.1) silicon nitride containing (si3n4) (97.2) with trivalent metal compound (e.g., yttrium, rare earth, or aluminum compound, etc.) (97.3) with alkaline earth metal compound
501/97.4501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (97.1) silicon nitride containing (si3n4) (97.4) composites (continuous matrix with dispersed phase)
501/98.1501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (98.1) silicon aluminum oxynitride containing (i.e., siaion compounds)
501/98.2501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (98.1) silicon aluminum oxynitride containing (i.e., siaion compounds) (98.2) with rare earth or alkaline earth metal compound
501/98.3501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (98.1) silicon aluminum oxynitride containing (i.e., siaion compounds) (98.3) composites (continuous matrix with dispersed phase)
501/98.4501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (98.4) aluminum nitride containing (ain)
501/98.5501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (98.4) aluminum nitride containing (ain) (98.5) with alkaline earth metal compound
501/98.6501 compositions: ceramic/(1) ceramic compositions (94) refractory (96.1) boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing (98.4) aluminum nitride containing (ain) (98.6) composites (continuous matrix with dispersed phase)
501/99501 compositions: ceramic/(1) ceramic compositions (94) refractory (99) elemental carbon containing
501/100501 compositions: ceramic/(1) ceramic compositions (94) refractory (99) elemental carbon containing (100) and aluminum compound (e.g., clay, aluminum oxide, etc.)
501/101501 compositions: ceramic/(1) ceramic compositions (94) refractory (99) elemental carbon containing (101) and alkaline earth metal or magnesium compound (e.g., dolomite, magnesium oxide, etc.)
501/102501 compositions: ceramic/(1) ceramic compositions (94) refractory (102) zirconium compound containing
501/103501 compositions: ceramic/(1) ceramic compositions (94) refractory (102) zirconium compound containing (103) zirconium oxide
501/104501 compositions: ceramic/(1) ceramic compositions (94) refractory (102) zirconium compound containing (103) zirconium oxide (104) and alkaline earth metal or magnesium compound
501/105501 compositions: ceramic/(1) ceramic compositions (94) refractory (102) zirconium compound containing (103) zirconium oxide (105) and aluminum compound (e.g., clay, aluminum oxide, etc.)
501/106501 compositions: ceramic/(1) ceramic compositions (94) refractory (102) zirconium compound containing (106) zirconium silicate
501/107501 compositions: ceramic/(1) ceramic compositions (94) refractory (102) zirconium compound containing (106) zirconium silicate (107) and aluminum compound (e.g., clay, aluminum oxide, etc.)
501/108501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing
501/109501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (109) with organic material in starting mixture
501/110501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (109) with organic material in starting mixture (110) and iron or chromium compound
501/111501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (111) and phosphorus compound
501/112501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (112) and iron compound
501/113501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (112) and iron compound (113) dolomite containing
501/114501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (112) and iron compound (114) and chromium compound
501/115501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (112) and iron compound (114) and chromium compound (115) fused cast or fused material containing
501/116501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (112) and iron compound (114) and chromium compound (116) chemical binder containing
501/117501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (117) and chromium compound
501/118501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (118) and aluminum compound
501/119501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (118) and aluminum compound (119) aluminum compound other than clay
501/120501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (118) and aluminum compound (119) aluminum compound other than clay (120) spinel or other aluminate
501/121501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (121) less than 90 percent by weight magnesium compound
501/122501 compositions: ceramic/(1) ceramic compositions (94) refractory (108) magnesium compound containing (122) and silicon compound
501/123501 compositions: ceramic/(1) ceramic compositions (94) refractory (123) alkaline earth metal compound containing
501/124501 compositions: ceramic/(1) ceramic compositions (94) refractory (123) alkaline earth metal compound containing (124) hydraulic cement containing
501/125501 compositions: ceramic/(1) ceramic compositions (94) refractory (123) alkaline earth metal compound containing (125) and aluminum compound
501/126501 compositions: ceramic/(1) ceramic compositions (94) refractory (126) trivalent metal compound (e.g., iron oxide, chromium oxide, trivalent rare earth oxide, etc.) containing
501/127501 compositions: ceramic/(1) ceramic compositions (94) refractory (126) trivalent metal compound (e.g., iron oxide, chromium oxide, trivalent rare earth oxide, etc.) containing (127) aluminum compound (e.g., clay, aluminium oxide, etc.)
501/128501 compositions: ceramic/(1) ceramic compositions (94) refractory (126) trivalent metal compound (e.g., iron oxide, chromium oxide, trivalent rare earth oxide, etc.) containing (127) aluminum compound (e.g., clay, aluminium oxide, etc.) (128) and silicon compound other than clay
501/129501 compositions: ceramic/(1) ceramic compositions (94) refractory (126) trivalent metal compound (e.g., iron oxide, chromium oxide, trivalent rare earth oxide, etc.) containing (127) aluminum compound (e.g., clay, aluminium oxide, etc.) (128) and silicon compound other than clay (129) and silica-clay mixtures
501/130501 compositions: ceramic/(1) ceramic compositions (94) refractory (126) trivalent metal compound (e.g., iron oxide, chromium oxide, trivalent rare earth oxide, etc.) containing (127) aluminum compound (e.g., clay, aluminium oxide, etc.) (128) and silicon compound other than clay (130) and clay containing
501/131501 compositions: ceramic/(1) ceramic compositions (94) refractory (126) trivalent metal compound (e.g., iron oxide, chromium oxide, trivalent rare earth oxide, etc.) containing (127) aluminum compound (e.g., clay, aluminium oxide, etc.) (128) and silicon compound other than clay (130) and clay containing (131) less than 40 percent by weight clay
501/132501 compositions: ceramic/(1) ceramic compositions (94) refractory (126) trivalent metal compound (e.g., iron oxide, chromium oxide, trivalent rare earth oxide, etc.) containing (132) chromium compound containing
501/133501 compositions: ceramic/(1) ceramic compositions (94) refractory (133) silica containing
501/134501 compositions: ceramic/(1) ceramic compositions (134) titanate, zirconate, stannate, niobate, or tantalate or oxide of titanium, zirconium, tin, niobium, or tantalum containing (e.g., dielectrics, etc.)
501/135501 compositions: ceramic/(1) ceramic compositions (134) titanate, zirconate, stannate, niobate, or tantalate or oxide of titanium, zirconium, tin, niobium, or tantalum containing (e.g., dielectrics, etc.) (135) alkaline earth or magnesium containing
501/136501 compositions: ceramic/(1) ceramic compositions (134) titanate, zirconate, stannate, niobate, or tantalate or oxide of titanium, zirconium, tin, niobium, or tantalum containing (e.g., dielectrics, etc.) (135) alkaline earth or magnesium containing (136) titanate containing
501/137501 compositions: ceramic/(1) ceramic compositions (134) titanate, zirconate, stannate, niobate, or tantalate or oxide of titanium, zirconium, tin, niobium, or tantalum containing (e.g., dielectrics, etc.) (135) alkaline earth or magnesium containing (136) titanate containing (137) barium titanate
501/138501 compositions: ceramic/(1) ceramic compositions (134) titanate, zirconate, stannate, niobate, or tantalate or oxide of titanium, zirconium, tin, niobium, or tantalum containing (e.g., dielectrics, etc.) (135) alkaline earth or magnesium containing (136) titanate containing (137) barium titanate (138) and divalent metal oxide other than alkaline earth oxide or magnesium oxide
501/139501 compositions: ceramic/(1) ceramic compositions (134) titanate, zirconate, stannate, niobate, or tantalate or oxide of titanium, zirconium, tin, niobium, or tantalum containing (e.g., dielectrics, etc.) (135) alkaline earth or magnesium containing (136) titanate containing (137) barium titanate (139) and trivalent metal oxide
501/140501 compositions: ceramic/(1) ceramic compositions (140) elemental sulfur containing
501/141501 compositions: ceramic/(1) ceramic compositions (141) clay containing (e.g., porcelain, earthenware, etc.)
501/142501 compositions: ceramic/(1) ceramic compositions (141) clay containing (e.g., porcelain, earthenware, etc.) (142) and phosphorus (e.g., bone china, etc.)
501/143501 compositions: ceramic/(1) ceramic compositions (141) clay containing (e.g., porcelain, earthenware, etc.) (143) and flint or feldspar
501/144501 compositions: ceramic/(1) ceramic compositions (141) clay containing (e.g., porcelain, earthenware, etc.) (143) and flint or feldspar (144) kaolin (e.g., ball clay, fire clay, etc.) containing
501/145501 compositions: ceramic/(1) ceramic compositions (141) clay containing (e.g., porcelain, earthenware, etc.) (145) clay pretreatment
501/146501 compositions: ceramic/(1) ceramic compositions (141) clay containing (e.g., porcelain, earthenware, etc.) (145) clay pretreatment (146) chemical pretreatment
501/147501 compositions: ceramic/(1) ceramic compositions (141) clay containing (e.g., porcelain, earthenware, etc.) (145) clay pretreatment (146) chemical pretreatment (147) using alkaline compound treating agent
501/148501 compositions: ceramic/(1) ceramic compositions (141) clay containing (e.g., porcelain, earthenware, etc.) (145) clay pretreatment (146) chemical pretreatment (148) using organic substance as treating agent
501/149501 compositions: ceramic/(1) ceramic compositions (141) clay containing (e.g., porcelain, earthenware, etc.) (145) clay pretreatment (149) water pretreatment
501/150501 compositions: ceramic/(1) ceramic compositions (141) clay containing (e.g., porcelain, earthenware, etc.) (145) clay pretreatment (150) heat pretreatment
501/151501 compositions: ceramic/(1) ceramic compositions (151) fluorine containing
501/152501 compositions: ceramic/(1) ceramic compositions (152) yttrium, lanthanide, actinide, or transactinide containing (i.e., atomic numbers 39 or 57-71 or 89+)
501/153501 compositions: ceramic/(1) ceramic compositions (153) aluminum compound containing
501/154501 compositions: ceramic/(1) ceramic compositions (154) silicon compound containing
501/155501 compositions: ceramic/(1) ceramic compositions (155) composed of waste material
501/900501 compositions: ceramic/(900) optical glass (e.g., silent on refractive index and/or abbe number)
501/901501 compositions: ceramic/(900) optical glass (e.g., silent on refractive index and/or abbe number) (901) having r.i. at least 1.8
501/902501 compositions: ceramic/(900) optical glass (e.g., silent on refractive index and/or abbe number) (902) having abbe number at least 70
501/903501 compositions: ceramic/(900) optical glass (e.g., silent on refractive index and/or abbe number) (903) having refractive index less than 1.8 and abbe number less than 70
501/904501 compositions: ceramic/(900) optical glass (e.g., silent on refractive index and/or abbe number) (904) infrared transmitting or absorbing
501/905501 compositions: ceramic/(900) optical glass (e.g., silent on refractive index and/or abbe number) (905) ultraviolet transmitting or absorbing
501/906501 compositions: ceramic/(900) optical glass (e.g., silent on refractive index and/or abbe number) (906) thorium oxide containing

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