Inventor · Praroman, CH

Laurent Chassot

42Patents
8h-index
14Co-inventors
68Inventor score

Filing activity: Mar 5, 1993 → Aug 11, 2006

Most-cited inventions

PatentTitleAreaCited byStatus
US6203909A Composite pigment Emerging Cross-Sectional Technologies 20 Expired
US5346545A Stabilization Chemistry; Metallurgy 16 Expired
US6042620A p-diaminobenzene derivative compounds and dye compositions containing same Human Necessities 13 Expired
US6436152B1 Substituted 2-aminoalky-1,4-diaminobenzene compounds and oxidation dye precursor compositions containing same Chemistry; Metallurgy 12 Expired
US6600050B2 Diaminopyrazole derivatives and dyes containing said compounds Chemistry; Metallurgy 11 Expired
US5348580A Stabilization of organic pigments Chemistry; Metallurgy 11 Expired
US6500213B1 Oxidizing hair coloring agents containing 2,5-diamino-1-phenylbenzene derivatives and novel 2,5-diamino-1-phenylbenzene derivatives Chemistry; Metallurgy 11 Expired
US5389141A Stabilization of pyrrolopyrrole pigments Chemistry; Metallurgy 9 Expired
US6132475A Diaminobenzene derivative compounds and dye compositions containing same Chemistry; Metallurgy 8 Expired
US7491244B2 Oxidizing hair coloring agents containing m-aminophenol derivatives Human Necessities 7 Active
US5522925A Organic pigments coated with Zr or Ti phosphate complexes Chemistry; Metallurgy 6 Expired
US5641350A Organic pigments coated with metal phosphate complexes and amines Chemistry; Metallurgy 5 Expired
US6231622A Dye compositions, especially for dyeing hair, containing indane derivative compounds Human Necessities 5 Expired
US5968242A Colourant-loaded molecular sieve Chemistry; Metallurgy 4 Expired
US6840965B2 P-aminophenols and colorants containing said compounds Chemistry; Metallurgy 4 Expired
US7070626B2 (P-amino-hydroxyphenyl)-acrylamide derivatives and dyes containing said compounds Chemistry; Metallurgy 3 Expired
US6592631B2 p-Aminophenol derivative compounds and dye compositions containing same Chemistry; Metallurgy 3 Expired
US6997961B2 N-heteroarylmethyl-m-phenylenediamine derivatives-containing dyes for keratin fibers and novel n-heteroarylmethyl-m-phenylenediamine derivatives Chemistry; Metallurgy 3 Expired
US6602302B1 Substituted 1,4 diaminobenzene compounds and oxidation dye precursor compositions containing same Chemistry; Metallurgy 2 Expired
US6699296B2 P-diaminobenzene derivatives and dyes containing said compounds Chemistry; Metallurgy 2 Expired
US6800097B2 Substituted 2-aminoalkyl-1,4-Diaminobenzene compounds and oxidation dye precursor compositions containing same Chemistry; Metallurgy 2 Expired
US5378276A Diketopyrrolopyrroles containing nitroxyl groups Chemistry; Metallurgy 2 Expired
US6849766B2 1,4-diamino-2-alkenylbenzene derivatives, and dyes containing these compounds Chemistry; Metallurgy 1 Expired
US6780998B2 Substituted 2-aminoalkyl-1,4-diaminobenzene compounds and oxidation dye precursor compositions containing same Chemistry; Metallurgy 1 Expired
US6936077B2 1,3-diamino-4-(aminomethyl)—benzene derivatives and colorants containing the said compounds Chemistry; Metallurgy 1 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.