Inventor
MAAK NORBERT
DE21 patents
Patents
21 patentsUS4745652AMay 24, 1988
New tetra-aminopyrimidine derivatives and their use in hair-dyeing preparations
HENKEL KGAA28 citations92
US4685931AAug 11, 1987
Acrylate dispersion and its use for thickening hydrogen peroxide preparations
HENKEL KGAA29 citations92
US4487607ADec 11, 1984
Oxidation hair dyes containing 5-halo-2,3-pyridine-diols as coupler components
HENKEL KGAA20 citations82
US4341559AJul 27, 1982
Binders based upon solutions of alkali metal silicates
HENKEL KGAA20 citations79
US4976742ADec 11, 1990
META-aminophenols useful as oxidation hair dye couplers
HENKEL KGAA17 citations74
US4900325AFeb 13, 1990
Hair-dyeing preparations
HENKEL KGAA13 citations74
US4842612AJun 27, 1989
Aminophenyl alkylenediamines useful in oxidation hair dyes
HENKEL KGAA6 citations74
US4838893AJun 13, 1989
Oxidation hair dyes comprising substituted dihydroxypyridines as coupling components
HENKEL KGAA10 citations74
US4619666AOct 28, 1986
Hair dyes containing amino-nitrobenzoic acid or amino-nitrobenzene sulfonic acids as substantive dyes
HENKEL KGAA7 citations74
US4371370AFeb 1, 1983
Oxidation hair dyes comprising bis-(2,4-diaminophenoxy)-alkanols as coupling components
HENKEL KGAA6 citations74
US4784667ANov 15, 1988
Oxidation hair dyes comprising diamino-substituted pyridines and amino-substituted aromatics as precursors
HENKEL KGAA14 citations71
US4859206AAug 22, 1989
Hair dye preparations containing nitrodiphenylamine derivative
HENKEL KGAA2 citations63
US4832697AMay 23, 1989
Hair dye preparations containing substantive nitrodiphenylamine derivatives
HENKEL KGAA2 citations63
US4756716AJul 12, 1988
Preparations containing substantive nitrodiphenylamine derivative hair dyes
HENKEL KGAA2 citations63
US4698066AOct 6, 1987
Amine oxidation dye hair treating compositions
HENKEL KGAA4 citations63
US4552565ANov 12, 1985
Hair dyes: diresorcyl sulphide, sulphoxide or sulphone coupling agents
HENKEL KGAA2 citations63
US4402699ASep 6, 1983
Coupler components for the oxidation of hair dyes and their use, as well as hair dyeing agents containing them
HENKEL KGAA4 citations63
US4684371AAug 4, 1987
Oxidation hair dyes comprising m-phenylenediamine derivatives as coupling components
HENKEL KGAA2 citations62
US4541869ASep 17, 1985
Process for forming foundry components
HENKEL KGAA5 citations59
US4900327AFeb 13, 1990
Preparations containing substantive nitrodiphenylamine derivative hair dyes
HENKEL KGAA0 citations52
US4756715AJul 12, 1988
Hair-dyeing preparations containing substantive nitrodiphenylamine derivatives
HENKEL KGAA1 citations52