USPC Patent Classifications

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Class 503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor
uspcdescription
503/200503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use
503/201503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (201) method of use, kit, or combined with marking instrument or organ
503/202503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (202) color developed by mere decomposition of color-former
503/203503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (203) duplicating master
503/204503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (204) plural colors or plural diverse systems
503/205503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (205) having a color desensitizer
503/206503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (206) component noncoextensive with substrate
503/207503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (207) having nonreactant particles of defined size
503/208503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (208) having constituent defined in terms of melting temperature
503/209503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (209) having nonchromogenic liquid spread-control or transfer-improving agent or component, color modifier, stabilizer or preservative
503/210503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (210) heavy metal reactant
503/211503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (210) heavy metal reactant (211) metal of atomic number 22-30
503/212503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (210) heavy metal reactant (211) metal of atomic number 22-30 (212) zinc
503/213503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (213) identified solvent or dispersant for color-former, other than mere mineral oil
503/214503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (214) identified reactant isolating material or capsule wall material or binder resin
503/215503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (214) identified reactant isolating material or capsule wall material or binder resin (215) synthetic resin capsule walls
503/216503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (216) identified organic electron acceptor (developer) other than phenolic resin
503/217503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (216) identified organic electron acceptor (developer) other than phenolic resin (217) and identified color-former
503/218503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (218) identified color-former
503/219503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (218) identified color-former (219) and identified inorganic electron acceptor (developer), other than mere clay
503/220503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (218) identified color-former (220) furanone moiety-containing
503/221503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (218) identified color-former (220) furanone moiety-containing (221) fluoran or derivative
503/222503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (218) identified color-former (220) furanone moiety-containing (221) fluoran or derivative (222) molecule having plural fluorans or more than three rings fused together
503/223503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (218) identified color-former (223) azole moiety-containing
503/224503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (218) identified color-former (224) polyphenylmethane moiety-containing
503/225503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (225) identified electron acceptor (developer)
503/226503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (226) spatial relationship specified between color-former and developer
503/227503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(227) having plural interactive leaves

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