Inventor
UMBRICHT GISELA
CH10 patents
Patents
10 patentsUS5879411AMar 9, 1999
Composition and method for dyeing keratin fibers with o-benzoquinones and amino- or hydroxy-containing compounds
WELLA AG2 citations61
US6908492B2Jun 21, 2005
7-nitro-2,1,3-benzoxadiazole and 7-nitro-2,1,3-benzthiadiazole derivatives, as well dyeing agents for keratin fibers containing these compounds
WELLA AG2 citations60
US6869454B2Mar 22, 2005
7-Nitro-2,1,3-benzoxadiazole and 7-nitro-2,1,3-benzthiadiazole derivatives, as well dyeing agents for keratin fibers containing these compounds
WELLA AG2 citations60
US7070625B2Jul 4, 2006
Agent and method for coloring keratin fibers containing 2-benzothiazolinone-hydrazone and quinone derivatives
WELLA AG3 citations59
US7083656B2Aug 1, 2006
7-nitro-2,1,3-benzoxadiazole and 7-nitro-2,1,3-benzthiadiazole derivatives, as well dyeing agents for keratin fibers containing these compounds
WELLA AG0 citations49
US6726730B2Apr 27, 2004
7-Nitro-2,1,3-benzoxadiazole derivatives and 7-nitro,2,1,3-benzthiadiazole derivatives and dyes, which contain these compounds and which are used for dying keratin fibers
WELLA AG0 citations49
US7214248B1May 8, 2007
Multi-component kit and method for temporarily dyeing and later decolorizing hair
WELLA AG0 citations39
US7455698B2Nov 25, 2008
Cationic dyes and dyestuff for keratin fibres containing said compounds
WELLA AG0 citations38
US7132001B2Nov 7, 2006
3-aminophenol derivatives and dyes that contain these compounds while serving to dye keratin fibers
WELLA AG0 citations35
US7033401B2Apr 25, 2006
3-Aminophenol derivatives substituted in the 2-position, and dyes containing these compounds
WELLA AG0 citations35