Ehrhard Hellmig

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Patents Grantslast 30 patents

Information Patent Grant
Color correction of unwanted side densities in light-sensitive colo...
- Patent number 4,036,646
- Issue date Jul 19, 1977
- AGFA-Gevaert, A.G.
- Ehrhard Hellmig
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Light-sensitive color photographic material with masking layer comp...
- Patent number 4,023,970
- Issue date May 17, 1977
- AGFA-Gevaert, A.G.
- Ehrhard Hellmig
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for the production of negative continuous-tone images
- Patent number 3,977,872
- Issue date Aug 31, 1976
- AGFA-Gevaert, A.G.
- Ehrhard Hellmig
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY