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Wolfgang Bauer
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Krefeld, DE
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last 30 patents
Information
Patent Grant
Water-soluble stilbene dyes, their preparation and use
Patent number
6,464,768
Issue date
Oct 15, 2002
Clariant GmbH
Wolfgang Bauer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Red acid dyes for injet printing and paper dyeing
Patent number
6,432,185
Issue date
Aug 13, 2002
Clariant GmbH
Wolfgang Bauer
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Water-soluble red acid dyes, their preparation and use
Patent number
6,406,527
Issue date
Jun 18, 2002
Clariant GmbH
Wolfgang Bauer
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for preparing dioxazine compounds
Patent number
6,359,131
Issue date
Mar 19, 2002
Clariant GmbH
Gert Nagl
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Process for the preparation of 4,4'-dimethyl-6,6'-dichlorothioindigo
Patent number
5,981,766
Issue date
Nov 9, 1999
Clariant GmbH
Wolfgang Bauer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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
Process for the preparation of dioxazine compounds
Patent number
5,932,727
Issue date
Aug 3, 1999
Clariant GmbH
Gert Nagl
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Hair colorants based on perimidine derivatives
Patent number
5,922,086
Issue date
Jul 13, 1999
Clariant GmbH
Wolfgang Bauer
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Process for preparing N-alkylcarbazoles
Patent number
5,902,884
Issue date
May 11, 1999
Clariant GmbH
Wolfgang Bauer
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Water-soluble copper phthalocyanine dyestuffs, their preparation an...
Patent number
5,882,360
Issue date
Mar 16, 1999
Clariant GmbH
Wolfgang Bauer
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Benzothioxanthene dyes, their preparation and their use
Patent number
5,783,710
Issue date
Jul 21, 1998
Hoechst Aktiengesellschaft
Wolfgang Bauer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Processes for preparing 1-methoxy-2-propyl 3-(7-diethylamino-2-oxo-...
Patent number
5,767,292
Issue date
Jun 16, 1998
Hoechst Aktiengesellschaft
Peter Koch
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Tetrakisazo Compounds, the method of preparation thereof and the pr...
Patent number
5,668,260
Issue date
Sep 16, 1997
Hoecht Aktienge Sellschaft
Wolfgang Bauer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Hair coloring compositions which contain developers and perimidine...
Patent number
5,613,985
Issue date
Mar 25, 1997
Hoechst Aktiengesellschaft
Wolfgang Bauer
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Water-soluble polyazo dyestuffs
Patent number
5,597,387
Issue date
Jan 28, 1997
Hoechst AG
Wolfgang Bauer
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Method of preparing 1-amino-2, 6-dimethylpiperidine
Patent number
5,510,489
Issue date
Apr 23, 1996
Cassella Aktiengesellschaft
Wolfgang Rybczynski
C07 - ORGANIC CHEMISTRY
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
Information
Patent Grant
Water-soluble sulphur dyes, their preparation and use
Patent number
5,383,961
Issue date
Jan 24, 1995
Cassella AG
Wolfgang Bauer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Water-insoluble sulphur dyes, their preparation and use
Patent number
5,374,302
Issue date
Dec 20, 1994
Cassella AG
Wolfgang Bauer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Water-insoluble sulphur dyes, their preparation and use
Patent number
5,368,637
Issue date
Nov 29, 1994
Cassella AG
Wolfgang Bauer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Process for the preparation of 4-(2-aminophenylthio)naphthalic anhy...
Patent number
5,347,019
Issue date
Sep 13, 1994
Cassella AG
Wolfgang Bauer
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of benzothioxanthene dyestuffs
Patent number
5,280,128
Issue date
Jan 18, 1994
Cassella Aktiengesellschaft
Wolfgang Bauer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Dyeing leather with water-insoluble sulphur dyes
Patent number
5,240,466
Issue date
Aug 31, 1993
Casella Aktiengesellschaft
Wolfgang Bauer
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Water-soluble trisazo dyes
Patent number
5,110,917
Issue date
May 5, 1992
Cassella Aktiengesellschaft
Wolfgang Bauer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Water-soluble aminonaphthol disazo dyestuffs, their preparation and...
Patent number
4,973,672
Issue date
Nov 27, 1990
Cassella Aktiengesellschaft
Wolfgang Bauer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Liquid formulations of 1,2-benzisothiazolin-3-one, their preparatio...
Patent number
4,923,887
Issue date
May 8, 1990
Cassella Aktiengesellschaft
Wolfgang Bauer
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information
Patent Grant
Water-soluble black trisazo dyestuffs
Patent number
4,917,731
Issue date
Apr 17, 1990
Wolfgang Bauer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Process for preparing 2,5-dichlorophenylthioglycollic acid
Patent number
4,918,221
Issue date
Apr 17, 1990
Cassella AG.
Wolfgang Bauer
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 2-arylthiobenzoic acids
Patent number
4,902,826
Issue date
Feb 20, 1990
Bayer Aktiengesellschaft
Wolfgang Bauer
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Water-soluble yellow monoazo dyestuffs
Patent number
4,881,977
Issue date
Nov 21, 1989
Cassella Aktiengesellschaft
Wolfgang Bauer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...