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Rudolf Stolzenburg
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Dusseldorf, DE
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last 30 patents
Information
Patent Grant
Color photographic recording material containing a coupler releasin...
Patent number
5,021,330
Issue date
Jun 4, 1991
Agfa-Gevaert Aktiengesellschaft
Peter Bergthaller
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color photograhic recording material containing a coupler which rel...
Patent number
4,870,000
Issue date
Sep 26, 1989
Agfa-Gevaert Aktiengesellschaft
Peter Bergthaller
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photographic material containing a pyridine azo or pyridazine azo c...
Patent number
4,767,698
Issue date
Aug 30, 1988
Agfa-Gevaert Aktiengesellschaft
Peter Bergthaller
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color photographic recording material containing a thiophene azo dy...
Patent number
4,579,805
Issue date
Apr 1, 1986
Agfa-Gevaert Aktiengesellschaft
Peter Bergthaller
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photographic recording material containing new azo dyes
Patent number
4,559,296
Issue date
Dec 17, 1985
Agfa-Gevaert Aktiengesellschaft
Peter Bergthaller
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color photographic recording material containing a thiazole azo dye...
Patent number
4,524,124
Issue date
Jun 18, 1985
Agfa-Gevaert Aktiengesellschaft
Peter Bergthaller
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Monoazo pyridinol dyes chelated or capable of being chelated with m...
Patent number
4,521,506
Issue date
Jun 4, 1985
Agfa-Gevaert Aktiengesellschaft
Rudolf Stolzenburg
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photographic recording material with arylazocyanoacetic ester dye r...
Patent number
4,393,132
Issue date
Jul 12, 1983
Agfa-Gevaert Aktiengesellschaft
Gunther Schenk
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photographic dye diffusion transfer process
Patent number
4,195,992
Issue date
Apr 1, 1980
AGFA-Gevaert Aktiengesellschaft
Rudolf Stolzenburg
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Dye diffusion transfer employing pyridine azo dye
Patent number
4,139,383
Issue date
Feb 13, 1979
AGFA-Gevaert A.G.
Heinrich Odenwalder
C07 - ORGANIC CHEMISTRY