Inventor
SCHENK GUENTHER
DE17 patents
Patents
17 patentsUS4816372AMar 28, 1989
Heat development process and color photographic recording material suitable for this process
AGFA GEVAERT AG30 citations92
US4396710AAug 2, 1983
Photographic recording material with metal complexable, heterocyclic azo dye
AGFA GEVAERT AG41 citations92
US6013420AJan 11, 2000
Chromogenic process for the production of color images using a color photographic recording material, which contains embedded color developer compounds that can be activated by heat treatment
AGFA GEVAERT AG21 citations91
US4740446AApr 26, 1988
Heat development process and color photographic recording material suitable for this process
AGFA GEVAERT AG10 citations73
US4840871AJun 20, 1989
Color photographic heat development process
AGFA GEVAERT AG9 citations72
US4524123AJun 18, 1985
Chelatable 4-thienyl imidazole azo dyes, their use in color photographic recording material
AGFA GEVAERT AG7 citations71
US4894312AJan 16, 1990
Dye diffusion process with base precursor salts of strong organic bases and weak organic acids
AGFA GEVAERT AG2 citations62
US4865940ASep 12, 1989
Photographic recording material
AGFA GEVAERT AG6 citations62
US4810628AMar 7, 1989
Color photographic recording material capable of being developed by heat treatment
AGFA GEVAERT AG2 citations62
US4770970ASep 13, 1988
Photographic heat development process and auxiliary sheet suitable therein
AGFA GEVAERT AG5 citations62
US4732839AMar 22, 1988
Alkali metal alginate surface layer for heat development process
AGFA GEVAERT AG2 citations62
US4689286AAug 25, 1987
Color photographic recording material developable by heat treatment
AGFA GEVAERT AG6 citations62
US4418143ANov 29, 1983
Color photographic recording material
AGFA GEVAERT AG6 citations62
US4393132AJul 12, 1983
Photographic recording material with arylazocyanoacetic ester dye releasers
AGFA GEVAERT AG2 citations62
US4847179AJul 11, 1989
Photographic dye diffusion transfer process and color photographic recording material suitable for this process
AGFA GEVAERT AG3 citations61
US4461827AJul 24, 1984
Color photographic recording material containing a non-diffusible dye releaser from which a complexible azo dye is released during development
AGFA GEVAERT AG5 citations60
US5573892ANov 12, 1996
Use of Yellow couplers of the indolo [3,2-B] guinoline type in a colo ur photographic development process
AGFA GEVAERT AG0 citations51