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Friedrich-Wilhelm Kunitz
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Wermelskirchen, DE
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last 30 patents
Information
Patent Grant
Color photographic recording material containing color couplers
Patent number
5,143,823
Issue date
Sep 1, 1992
Agfa-Gevaert Aktiengesellschaft
Friedrich-Wilhelm Kunitz
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color photographic recording material containing color couplers
Patent number
5,134,059
Issue date
Jul 28, 1992
Bayer Aktiengesellschaft
Friedrich-Wilhelm Kunitz
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Iron complexes and bleaching baths containing same
Patent number
5,009,985
Issue date
Apr 23, 1991
Agfa-Gevaert Aktiengesellschaft
Friedrich-Wilhelm Kunitz
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Color photographic recording material containing a dir-coupler
Patent number
4,897,341
Issue date
Jan 30, 1990
Agfa-Gevaert Aktiengesellschaft
Heinrich Odenwalder
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color photographic recording material containing a yellow DIR coupler
Patent number
4,840,880
Issue date
Jun 20, 1989
Agfa-Gevaert Aktiengesellschaft
Hans Ohlschlager
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Color photographic recording material containing a yellow DIR coupler
Patent number
4,833,070
Issue date
May 23, 1989
Agfa-Gevaert Aktiengesellschaft
Friedrich-Wilhelm Kunitz
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Polyurea and polyurethane compounds containing a photographically u...
Patent number
4,762,777
Issue date
Aug 9, 1988
AGFA-Gevaert A.G.
Guter Helling
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polymeric couplers and light-sensitive photographic silver halide r...
Patent number
4,756,998
Issue date
Jul 12, 1988
Agfa-Gevaert Aktiengesellschaft
Gunter Helling
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color photographic color coupler-containing recording material
Patent number
4,617,256
Issue date
Oct 14, 1986
Agfa-Gevaert Aktiengesellschaft
Friedrich-Wilhelm Kunitz
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color photographic recording material for the production of color i...
Patent number
4,581,324
Issue date
Apr 8, 1986
Agfa-Gevaert Aktiengesellschaft
Erich Wolff
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photographic recording material containing a developer compound
Patent number
4,438,195
Issue date
Mar 20, 1984
Agfa-Gevaert Aktiengesellschaft
Friedrich-Wilhelm Kunitz
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process for the production of photographic images
Patent number
4,386,155
Issue date
May 31, 1983
AGFA-Gevaert A.G.
Peter Bergthaller
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Process for the development of color photographic images with p-dia...
Patent number
4,322,492
Issue date
Mar 30, 1982
Agfa-Gevaert Aktiengesellschaft
Friedrich-Wilhelm Kunitz
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Use of .beta.-aminoethyl carbamic acid for producing photographic b...
Patent number
4,267,263
Issue date
May 12, 1981
AGFA-Gevaert, A.G.
Friedrich-Wilhelm Kunitz
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color photographic material containing novel 2-equivalent yellow co...
Patent number
4,186,019
Issue date
Jan 29, 1980
AGFA-Gevaert Aktiengesellschaft
Friedrich-Wilhelm Kunitz
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
2-Equivalent yellow couplers
Patent number
4,138,557
Issue date
Feb 6, 1979
AGFA-Gevaert Aktiengesellschaft
Immo Boie
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photographic silver halide material with 2-equivalent, N-heterocycl...
Patent number
4,138,263
Issue date
Feb 6, 1979
AGFA-Gevaert Aktiengesellschaft
Immo Boie
C07 - ORGANIC CHEMISTRY