USPC Patent Classifications

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Class 71 chemistry: fertilizers
uspcdescription
71/171 chemistry: fertilizers/(1) processes and products
71/571 chemistry: fertilizers/(1) processes and products (5) for mushrooms
71/671 chemistry: fertilizers/(1) processes and products (6) bacterial
71/771 chemistry: fertilizers/(1) processes and products (6) bacterial (7) nitrogen fixing or nitrifying
71/871 chemistry: fertilizers/(1) processes and products (6) bacterial (8) fermentation
71/971 chemistry: fertilizers/(1) processes and products (6) bacterial (8) fermentation (9) aerobic
71/1071 chemistry: fertilizers/(1) processes and products (6) bacterial (8) fermentation (10) anaerobic
71/1171 chemistry: fertilizers/(1) processes and products (11) organic material-containing
71/1271 chemistry: fertilizers/(1) processes and products (11) organic material-containing (12) from sewage or night soil
71/1371 chemistry: fertilizers/(1) processes and products (11) organic material-containing (12) from sewage or night soil (13) with other organic material
71/1471 chemistry: fertilizers/(1) processes and products (11) organic material-containing (14) from garbage
71/1571 chemistry: fertilizers/(1) processes and products (11) organic material-containing (15) from animal matter
71/1671 chemistry: fertilizers/(1) processes and products (11) organic material-containing (15) from animal matter (16) marine animals
71/1771 chemistry: fertilizers/(1) processes and products (11) organic material-containing (15) from animal matter (17) blood
71/1871 chemistry: fertilizers/(1) processes and products (11) organic material-containing (15) from animal matter (18) horn, hair, feathers, wool, leather, etc.
71/1971 chemistry: fertilizers/(1) processes and products (11) organic material-containing (15) from animal matter (19) bone
71/2071 chemistry: fertilizers/(1) processes and products (11) organic material-containing (15) from animal matter (19) bone (20) with other organic matter
71/2171 chemistry: fertilizers/(1) processes and products (11) organic material-containing (15) from animal matter (21) guano, stable manure, etc.
71/2271 chemistry: fertilizers/(1) processes and products (11) organic material-containing (15) from animal matter (22) with other organic material
71/2371 chemistry: fertilizers/(1) processes and products (11) organic material-containing (23) from vegetation
71/2471 chemistry: fertilizers/(1) processes and products (11) organic material-containing (23) from vegetation (24) peat, humus material, coal, etc.
71/2571 chemistry: fertilizers/(1) processes and products (11) organic material-containing (25) from industrial wastes
71/2671 chemistry: fertilizers/(1) processes and products (11) organic material-containing (25) from industrial wastes (26) sugar or distillery
71/2771 chemistry: fertilizers/(1) processes and products (11) organic material-containing (27) from synthetic material
71/2871 chemistry: fertilizers/(1) processes and products (11) organic material-containing (27) from synthetic material (28) urea and its derivatives
71/2971 chemistry: fertilizers/(1) processes and products (11) organic material-containing (27) from synthetic material (28) urea and its derivatives (29) with phosphorus-containing substances
71/3071 chemistry: fertilizers/(1) processes and products (11) organic material-containing (27) from synthetic material (28) urea and its derivatives (30) with nitrogen-containing substances
71/3171 chemistry: fertilizers/(1) processes and products (31) inorganic material
71/3271 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing
71/3371 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates
71/3471 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (34) alkali metal and ammonium only
71/3571 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (34) alkali metal and ammonium only (35) nitrogen-containing
71/3671 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (34) alkali metal and ammonium only (36) alkali metal- and ammonium-containing
71/3771 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (37) acid treatment
71/3871 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (37) acid treatment (38) gaseous
71/3971 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (37) acid treatment (39) nitric and hydrochloric
71/4071 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (37) acid treatment (40) sulfuric acid
71/4171 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (37) acid treatment (41) acids of phosphorus
71/4271 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (42) alkaline treatment
71/4371 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (43) neutralization
71/4471 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (44) heat-treatment
71/4571 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (44) heat-treatment (45) alkali metal and silicon values
71/4671 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (44) heat-treatment (46) alkali metal values
71/4771 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (44) heat-treatment (47) carbonates, oxides, sulfates, silicon, and halides
71/4871 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (48) products
71/4971 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (48) products (49) nitrogen-containing
71/5071 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (48) products (49) nitrogen-containing (50) nitrates
71/5171 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (48) products (51) alkali metal- and ammonium-containing
71/5271 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (48) products (52) silicon-containing
71/5371 chemistry: fertilizers/(1) processes and products (31) inorganic material (32) phosphorus-containing (33) phosphates (48) products (53) containing carbonates, oxides, sulfates, or halides
71/5471 chemistry: fertilizers/(1) processes and products (31) inorganic material (54) nitrogen-containing (except ammonium)
71/5571 chemistry: fertilizers/(1) processes and products (31) inorganic material (54) nitrogen-containing (except ammonium) (55) cyanamide
71/5671 chemistry: fertilizers/(1) processes and products (31) inorganic material (54) nitrogen-containing (except ammonium) (55) cyanamide (56) nitrogen-containing (except ammonium)
71/5771 chemistry: fertilizers/(1) processes and products (31) inorganic material (54) nitrogen-containing (except ammonium) (55) cyanamide (57) alkali metal or ammonium-containing
71/5871 chemistry: fertilizers/(1) processes and products (31) inorganic material (54) nitrogen-containing (except ammonium) (58) nitrates
71/5971 chemistry: fertilizers/(1) processes and products (31) inorganic material (54) nitrogen-containing (except ammonium) (58) nitrates (59) with alkali metal or ammonium compound
71/6071 chemistry: fertilizers/(1) processes and products (31) inorganic material (54) nitrogen-containing (except ammonium) (58) nitrates (60) with carbonates, oxides, sulfates, or halides
71/6171 chemistry: fertilizers/(1) processes and products (31) inorganic material (61) alkali metal or ammonium
71/6271 chemistry: fertilizers/(1) processes and products (31) inorganic material (62) silicon-containing
71/6371 chemistry: fertilizers/(1) processes and products (31) inorganic material (63) carbonates, oxides, sulfates, halides, etc.
71/64.0171 chemistry: fertilizers/(1) processes and products (64.01) forms or conditioning
71/64.0271 chemistry: fertilizers/(1) processes and products (64.01) forms or conditioning (64.02) coating and granulating
71/64.0371 chemistry: fertilizers/(1) processes and products (64.01) forms or conditioning (64.03) granulating
71/64.0471 chemistry: fertilizers/(1) processes and products (64.01) forms or conditioning (64.03) granulating (64.04) by comminuting
71/64.0571 chemistry: fertilizers/(1) processes and products (64.01) forms or conditioning (64.03) granulating (64.05) by agglomerating
71/64.0671 chemistry: fertilizers/(1) processes and products (64.01) forms or conditioning (64.03) granulating (64.06) by fluid contact
71/64.0771 chemistry: fertilizers/(1) processes and products (64.01) forms or conditioning (64.07) coating
71/64.0871 chemistry: fertilizers/(1) processes and products (64.01) forms or conditioning (64.08) slurry or suspension
71/64.0971 chemistry: fertilizers/(1) processes and products (64.01) forms or conditioning (64.09) gel
71/64.171 chemistry: fertilizers/(1) processes and products (64.01) forms or conditioning (64.1) liquid
71/64.1171 chemistry: fertilizers/(1) processes and products (64.01) forms or conditioning (64.11) controlled release
71/64.1271 chemistry: fertilizers/(1) processes and products (64.01) forms or conditioning (64.12) anticaking
71/64.1371 chemistry: fertilizers/(1) processes and products (64.01) forms or conditioning (64.13) forms having structure, e.g., particle size, dimensions, etc.
71/90071 chemistry: fertilizers/(900) foams
71/90171 chemistry: fertilizers/(901) refuse conditioning
71/90271 chemistry: fertilizers/(902) nitrification inhibition
71/90371 chemistry: fertilizers/(903) soil conditioner
71/90471 chemistry: fertilizers/(904) carrier

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