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Gunther Konrad
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Hilden, DE
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last 30 patents
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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
Diglycidyl-pteridine compounds
Patent number
4,463,006
Issue date
Jul 31, 1984
Henkel Kommanditgesellschaft auf Aktien
Hinrich Moller
C07 - ORGANIC CHEMISTRY
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Patent Grant
Oxidation hair dyes comprising substituted benzotriazoles
Patent number
4,322,212
Issue date
Mar 30, 1982
Henkel Kommanditgesellschaft auf Aktien
Gunther Konrad
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Novel coupler components for oxidation hair dyes, the manufacture t...
Patent number
4,314,809
Issue date
Feb 9, 1982
Henkel Kommanditgesellschaft auf Aktien
David Rose
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE