Inventor
HAYOZ ANDRE
CH9 patents
Patents
9 patentsUS6648923B1Nov 18, 2003
Compositions containing 1,4-diamino-2-methoxymethylbenzene and salts thereof and methods for dyeing keratin fibers with same
WELLA AG24 citations91
US6716257B2Apr 6, 2004
Bridged diaminopyrazole compounds and dye compositions containing same
WELLA AG14 citations81
US6558433B2May 6, 2003
Process for dyeing keratin fibers comprising 1,4-diamino-2-methoxymethylbenzene and salts thereof
WELLA AG2 citations61
US7462204B2Dec 9, 2008
Cationic diaminopyrazoles, a process for producing them and colorants containing these compounds
WELLA AG2 citations60
US6461390B1Oct 8, 2002
Process for making 2-aminomethyl-1, 4-diaminobenzene and its salts and compositions and methods for dyeing keratin fibers using same
WELLA AG5 citations60
US7455697B2Nov 25, 2008
(3,5-diaminophenyl)(2,4-dihydroxyphenyl)methanone and the acid adducts thereof, method for their preparation and use of these compounds for dyeing fibers
WELLA AG0 citations51
US7361198B2Apr 22, 2008
M-diaminobenzenes, their acid adducts and the use thereof in colorants
WELLA AG1 citations49
US7517367B2Apr 14, 2009
Cationic naphthyldiazo dyes and keratin fibers-coloring agents containing these dyes
WELLA AG0 citations41
US7214248B1May 8, 2007
Multi-component kit and method for temporarily dyeing and later decolorizing hair
WELLA AG0 citations39