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Paul Marx
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Cologne, DE
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last 30 patents
Information
Patent Grant
Process for stabilizing photographic silver images
Patent number
4,987,059
Issue date
Jan 22, 1991
Agfa-Gevaert Aktiengesellschaft
Werner Berthold
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Stabilization of a photographically produced silver image
Patent number
4,886,737
Issue date
Dec 12, 1989
Agfa-Gevaert Aktiengesellschaft
Werner Berthold
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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
Stabilization of a photographically produced silver image using an...
Patent number
4,760,015
Issue date
Jul 26, 1988
Agfa-Gevaert Aktiengesellschaft
Werner Berthold
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
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
Color-photographic recording material containing non-diffusing elec...
Patent number
4,436,810
Issue date
Mar 13, 1984
Agfa-Gevaert Aktiengesellschaft
Karl Kuffner
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color photographic recording material containing a non-diffusible e...
Patent number
4,420,557
Issue date
Dec 13, 1983
Agfa-Gevaert Aktiengesellschaft
Heinrich Odenwalder
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photographic diffusion transfer process and material for the produc...
Patent number
4,273,855
Issue date
Jun 16, 1981
AGFA-GEVAERT N.V.
Jan Jaeken
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photographic dye diffusion transfer process
Patent number
4,242,435
Issue date
Dec 30, 1980
AGFA-Gevaert, A.G.
Walter Puschel
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
Light sensitive photographic material containing a mordant layer
Patent number
4,186,014
Issue date
Jan 29, 1980
AGFA-Gevaert Aktiengesellschaft
Peter Bergthaller
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Photographic dye diffusion transfer process
Patent number
4,179,291
Issue date
Dec 18, 1979
AGFA-Gevaert, A.G.
Hans Vetter
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photographic dye diffusion transfer process
Patent number
4,171,220
Issue date
Oct 16, 1979
AGFA-Gevaert, A.G.
Hans Vetter
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Sulfonamido dye releaser in photographic dye diffusion transfer
Patent number
4,110,113
Issue date
Aug 29, 1978
Agfa-Gevaert Aktiengesellschaft
Arnfried Melzer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY