Norbert Maak

Person

Neuss, DE

People

Patents Grantslast 30 patents

Information Patent Grant
META-aminophenols useful as oxidation hair dye couplers
- Patent number 4,976,742
- Issue date Dec 11, 1990
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Preparations containing substantive nitrodiphenylamine derivative h...
- Patent number 4,900,327
- Issue date Feb 13, 1990
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hair-dyeing preparations
- Patent number 4,900,325
- Issue date Feb 13, 1990
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hair dye preparations containing nitrodiphenylamine derivative
- Patent number 4,859,206
- Issue date Aug 22, 1989
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Aminophenyl alkylenediamines useful in oxidation hair dyes
- Patent number 4,842,612
- Issue date Jun 27, 1989
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Oxidation hair dyes comprising substituted dihydroxypyridines as co...
- Patent number 4,838,893
- Issue date Jun 13, 1989
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hair dye preparations containing substantive nitrodiphenylamine der...
- Patent number 4,832,697
- Issue date May 23, 1989
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Oxidation hair dyes comprising diamino-substituted pyridines and am...
- Patent number 4,784,667
- Issue date Nov 15, 1988
- Henkel Kommanditgesellschaft auf Aktien
- Norbert Maak
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hair-dyeing preparations containing substantive nitrodiphenylamine...
- Patent number 4,756,715
- Issue date Jul 12, 1988
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Preparations containing substantive nitrodiphenylamine derivative h...
- Patent number 4,756,716
- Issue date Jul 12, 1988
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
New tetra-aminopyrimidine derivatives and their use in hair-dyeing...
- Patent number 4,745,652
- Issue date May 24, 1988
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Amine oxidation dye hair treating compositions
- Patent number 4,698,066
- Issue date Oct 6, 1987
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Acrylate dispersion and its use for thickening hydrogen peroxide pr...
- Patent number 4,685,931
- Issue date Aug 11, 1987
- Henkel Kommanditgesellschaft auf Aktien
- Ludwig Schieferstein
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Oxidation hair dyes comprising m-phenylenediamine derivatives as co...
- Patent number 4,684,371
- Issue date Aug 4, 1987
- Henkel Kommanditgesellschaft auf Aktien
- Gunther Konrad
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hair dyes containing amino-nitrobenzoic acid or amino-nitrobenzene...
- Patent number 4,619,666
- Issue date Oct 28, 1986
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hair dyes: diresorcyl sulphide, sulphoxide or sulphone coupling agents
- Patent number 4,552,565
- Issue date Nov 12, 1985
- Henkel KGaA
- Norbert Maak
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Process for forming foundry components
- Patent number 4,541,869
- Issue date Sep 17, 1985
- Henkel Kommanditgesellschaft auf Aktien
- Norbert Maak
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Oxidation hair dyes containing 5-halo-2,3-pyridine-diols as coupler...
- Patent number 4,487,607
- Issue date Dec 11, 1984
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Coupler components for the oxidation of hair dyes and their use, as...
- Patent number 4,402,699
- Issue date Sep 6, 1983
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Oxidation hair dyes comprising bis-(2,4-diaminophenoxy)-alkanols as...
- Patent number 4,371,370
- Issue date Feb 1, 1983
- Henkel Kommanditgesellschaft auf Aktien
- David Rose
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Binders based upon solutions of alkali metal silicates
- Patent number 4,341,559
- Issue date Jul 27, 1982
- Henkel Kommanditgesellschaft auf Aktien
- Wolfgang Friedemann
- C07 - ORGANIC CHEMISTRY

Norbert Maak

Person

Patents Grantslast 30 patents

META-aminophenols useful as oxidation hair dye couplers

Preparations containing substantive nitrodiphenylamine derivative h...

Hair-dyeing preparations

Hair dye preparations containing nitrodiphenylamine derivative

Aminophenyl alkylenediamines useful in oxidation hair dyes

Oxidation hair dyes comprising substituted dihydroxypyridines as co...

Hair dye preparations containing substantive nitrodiphenylamine der...

Oxidation hair dyes comprising diamino-substituted pyridines and am...

Hair-dyeing preparations containing substantive nitrodiphenylamine...

Preparations containing substantive nitrodiphenylamine derivative h...

New tetra-aminopyrimidine derivatives and their use in hair-dyeing...

Amine oxidation dye hair treating compositions

Acrylate dispersion and its use for thickening hydrogen peroxide pr...

Oxidation hair dyes comprising m-phenylenediamine derivatives as co...

Hair dyes containing amino-nitrobenzoic acid or amino-nitrobenzene...

Hair dyes: diresorcyl sulphide, sulphoxide or sulphone coupling agents

Process for forming foundry components

Oxidation hair dyes containing 5-halo-2,3-pyridine-diols as coupler...

Coupler components for the oxidation of hair dyes and their use, as...

Oxidation hair dyes comprising bis-(2,4-diaminophenoxy)-alkanols as...

Binders based upon solutions of alkali metal silicates