Hans-Joachim Schumann

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Cologne, DE

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Patents Grantslast 30 patents

Information Patent Grant
Color photographic recording material
- Patent number 6,228,568
- Issue date May 8, 2001
- Agfa-Gevaert
- Thomas Stetzer
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color photographic recording material containing color couplers whi...
- Patent number 5,200,305
- Issue date Apr 6, 1993
- Agfa-Gevaert Aktiengesellschaft
- Hans-Joachim Schumann
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color photographic recording material containing a DIR coupler
- Patent number 5,035,987
- Issue date Jul 30, 1991
- Agfa-Gevaert Aktiengesellschaft
- Heinrich Odenwalder
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Color photographic recording material containing a color coupler of...
- Patent number 4,835,094
- Issue date May 30, 1989
- Agfa-Gevaert Aktiengesellschaft
- Erich Wolff
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photographic recording process
- Patent number 4,543,308
- Issue date Sep 24, 1985
- Agfa-Gevaert Aktiengesellschaft
- Hans-Joachim Schumann
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for the luminescense-spectroscopic examination of coatings...
- Patent number 4,460,274
- Issue date Jul 17, 1984
- Agfa-Gevaert Aktiengesellschaft
- Hans-Joachim Schumann
- G01 - MEASURING TESTING