Andreas Bittner

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Offenbach am Main, DE

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Patents Grantslast 30 patents

Information Patent Grant
Diaminoalkane and oxidation colorants
- Patent number 6,024,768
- Issue date Feb 15, 2000
- Hans Schwarzkopf GmbH & Co. KG
- Andreas Joachim Bittner
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Substituted diaminophenols, process for their preparation, and hair...
- Patent number 5,990,355
- Issue date Nov 23, 1999
- Hans Schwarzkopf GmbH & Co. KG
- Mustafa Akram
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
4-(2,4-diaminophenoxymethyl)-1,3-dioxolane secondary intermediates,...
- Patent number 5,961,668
- Issue date Oct 5, 1999
- Hans Schwarzkopf GmbH & Co. KG
- Mustafa Akram
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Substituted diaminophenols, and hair dyes containing such compounds
- Patent number 5,676,706
- Issue date Oct 14, 1997
- Mustafa Akram
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Process for the preparation of hydroxyalkylaminonitrobenzene deriva...
- Patent number 5,508,467
- Issue date Apr 16, 1996
- Cassella Aktiengesellschaft
- Wolfgang Bauer
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
DYES
- Publication number 20010052156
- Publication date Dec 20, 2001
- ANDREAS JOACHIM BITTNER
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
OXIDATION DYES
- Publication number 20010005914
- Publication date Jul 5, 2001
- Andreas J. Bittner
- ANDREAS J. BITTNER
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE