Inventor
CLAUSEN THOMAS
DE39 patents
⚠️ This page may combine multiple inventors who share the name “CLAUSEN THOMAS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WELLA AG
37 patentsUS5534267AJul 9, 1996
Composition for the oxidative dyeing of hair containing 4,5-diaminopyrazole derivatives as well as new 4,5-diaminopyrazole derivatives and process for their synthesis
WELLA AG498 citations98
US5380340AJan 10, 1995
Hair dye containing aminopyrazole derivatives as well as pyrazole derivatives
WELLA AG596 citations98
US5061289AOct 29, 1991
Oxidation hair dye composition containinng diaminopyrazol derivatives and new diaminopyrazol derivatives
WELLA AG646 citations97
US5279313AJan 18, 1994
Two component composition and method for bleaching hair
WELLA AG75 citations96
US5879669AMar 9, 1999
Aqueous hair fixing composition containing a water-soluble hair fixing polymer and a thickener
WELLA AG64 citations95
US5690921ANov 25, 1997
Hair fixing composition in the form of an aqueous solution, foam or gel
WELLA AG46 citations93
US4797130AJan 10, 1989
Oxidative hair dye composition based on 4-amino-2-aminomethyl-phenols
WELLA AG26 citations93
US5430159AJul 4, 1995
N-phenylaminopyrazole derivatives as well as composition and process for the dyeing of hair
WELLA AG30 citations92
US5409503AApr 25, 1995
Oxidation hair dye with a content of 5-aminophenyl derivatives, process for oxidative dyeing of hair and new 5-aminophenol derivatives
WELLA AG20 citations92
US4473375ASep 25, 1984
Composition and method for the coloring of hair
WELLA AG27 citations92
US6068835AMay 30, 2000
Cosmetic compositions for hair treatment containing dendrimers or dendrimer conjugates
WELLA AG44 citations91
US5303722AApr 19, 1994
Apparatus for bleaching hair under the influence of light
WELLA AG31 citations91
US5246019ASep 21, 1993
Process for bleaching hair under the influence of light
WELLA AG39 citations91
US5424062AJun 13, 1995
Method for permanently shaping hair
WELLA AG26 citations90
US5512276AApr 30, 1996
Composition for fixing hair based on lignin or lignin derivatives as well as dihydroxypropyl lignin
WELLA AG31 citations89
US5674476AOct 7, 1997
Process for making a persulfate-containing granulate for decolorizing or bleaching hair
WELLA AG31 citations88
US4997451AMar 5, 1991
Oxidative hair dyeing compositions based on 4-aminophenol derivatives and new 4-aminophenol derivatives
WELLA AG36 citations88
US5030241AJul 9, 1991
Use of 2,6-dinitro-aniline derivatives in hair dyes and new 2,6-dinitro-aniline derivatives
WELLA AG7 citations74
US4854935AAug 8, 1989
5-alkoxy-2,4-diamino-alkyl-benzenes and hairdye compositions based on 5-alkoxy-2,4-diamino-alkyl-benzenes
WELLA AG16 citations74
US4835314AMay 30, 1989
2-nitroaniline derivatives
WELLA AG7 citations74
US4704474ANov 3, 1987
1,4-diamino-5-chloro-2-nitrobenzene derivatives, processes for their production and compositions containing the same for the coloration of hair
WELLA AG6 citations74
US4661114AApr 28, 1987
3-Amino-5-hydroxypyridine derivatives and hair coloring compositions containing the same
WELLA AG6 citations74
US5224965AJul 6, 1993
Composition for the oxidative dyeing of hair and new 5-halogen-2,4-diamino alkylbenzenes
WELLA AG8 citations72
US5145482ASep 8, 1992
Hair dye compositions based on 2,5-diamino-6-nitropyridine derivatives
WELLA AG5 citations63
US5037446AAug 6, 1991
2-nitroaniline derivatives and hair dyeing compositions containing same
WELLA AG4 citations63
US4960955AOct 2, 1990
Process for making 4-chloro-2-methyl-5-nitro-phenol
WELLA AG2 citations63
US4950302AAug 21, 1990
Process for the production of 2,5-diamino-6-nitro-pyridine derivatives, their use in hair dye compositions and new 2,5-diamino-6-nitropyridine derivatives
WELLA AG5 citations63
US4921504AMay 1, 1990
4-(N-ethyl-N-2-hydroxyethyl)-amino-1-(2 hydroxyethyl)-amino-2-nitrobenzene and compositions for dyeing hair containing the same
WELLA AG3 citations63
US4886516ADec 12, 1989
Diaminotetrafluoroethoxybenzenes, process for producing same and hair coloring agents containing same
WELLA AG2 citations63
US4845294AJul 4, 1989
Diaminotetrafluoroethoxybenzenes
WELLA AG3 citations63
US4713080ADec 15, 1987
Method and composition for the dyeing of hair with 2,6-diamino-pyridine derivatives
WELLA AG2 citations63
US4629467ADec 16, 1986
Use of p-ureidoalkylamino-nitrobenzene derivatives in hair dyeing compositions and new p-ureidoalkylamino-nitrobenzene derivatives
WELLA AG4 citations63
US4975093ADec 4, 1990
Hair dyeing compositions containing 2,6-dinitro-phenol-derivatives
WELLA AG3 citations62
US5382702AJan 17, 1995
Process for the production of 5-alkoxy-2,4-dinitro-alkylbenzenes
WELLA AG3 citations61
US5132461AJul 21, 1992
Process for the production of 4-[ethyl-(2'-hydroxyethyl)-amino]-1-[(2'-hydroxyethyl)-amino]-2-nitro-benzene
WELLA AG2 citations61
US5542953AAug 6, 1996
5-halogen-2,4-Bis (alkylamino)-1-alkylbenzenes and hair dye compositions containing same
WELLA AG5 citations60
US4900869AFeb 13, 1990
Process for the production of 4-[ethyl-(2'-hydroxyethyl)-amino]-1-[(2'-hydroxyethyl)-amino]-2-nitrobenzene
WELLA AG0 citations50