Inventor
WOLFF ERICH
DE43 patents
⚠️ This page may combine multiple inventors who share the name “WOLFF ERICH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AGFA GEVAERT AG
37 patentsUS4845022AJul 4, 1989
Color photographic recording material containing a color coupler of the pyrazoloazole type
AGFA GEVAERT AG7 citations74
US4301240ANov 17, 1981
Photographic silver halide material with cross-linked particulate acrylic or methacrylic polymer
AGFA GEVAERT AG19 citations74
US4985351AJan 15, 1991
Photographic recording material
AGFA GEVAERT AG11 citations73
US4581324AApr 8, 1986
Color photographic recording material for the production of color images viewed by reflected light
AGFA GEVAERT AG12 citations73
US4414309ANov 8, 1983
Photographic recording material containing an aldehyde remover
AGFA GEVAERT AG9 citations73
US4278759AJul 14, 1981
Process of preparing photographic silver halide emulsion
AGFA GEVAERT AG7 citations73
US4146400AMar 27, 1979
Color photographic material containing new 2-equivalent yellow couplers
AGFA GEVAERT AG14 citations73
US4001016AJan 4, 1977
Polymers which can be cross-linked by photopolymerization
AGFA GEVAERT AG10 citations73
US5004676AApr 2, 1991
Process for the production of color photographic images comprising replenishing the developing solution
AGFA GEVAERT AG10 citations72
US4873338AOct 10, 1989
Process for the preparation of 2-amino-5-acylamino phenols and starting compounds suitable therefor
AGFA GEVAERT AG11 citations72
US4835094AMay 30, 1989
Color photographic recording material containing a color coupler of the pyrazoloazole series
AGFA GEVAERT AG9 citations72
US4095983AJun 20, 1978
Photographic material comprising cyclic sulfonamide substituted yellow color couplers
AGFA GEVAERT AG8 citations72
US4898811AFeb 6, 1990
Color photographic silver halide material with sulfonylphenol oil former
AGFA GEVAERT AG10 citations70
US4529691AJul 16, 1985
Color photographic recording material containing color couplers
AGFA GEVAERT AG13 citations68
US5719011AFeb 17, 1998
Photographic recording material
AGFA GEVAERT AG2 citations63
US5015565AMay 14, 1991
Color photographic recording material
AGFA GEVAERT AG6 citations63
US4939079AJul 3, 1990
Photographic recording material
AGFA GEVAERT AG3 citations63
US4871657AOct 3, 1989
Color photographic recording material with easily dispersible color couplers
AGFA GEVAERT AG3 citations63
US4418142ANov 29, 1983
Light-sensitive photographic silver halide recording material
AGFA GEVAERT AG5 citations63
US4056397ANov 1, 1977
Dye diffusion transfer material with graft polymer binding layer
AGFA GEVAERT AG5 citations63
US5158864AOct 27, 1992
Color photographic material
AGFA GEVAERT AG4 citations62
US4386155AMay 31, 1983
Process for the production of photographic images
AGFA GEVAERT AG3 citations62
US4381339AApr 26, 1983
Photographic recording material and non-diffusing compounds to be used in the material which contains a photographically active group which can be split off
AGFA GEVAERT AG3 citations62
US4267263AMay 12, 1981
Use of β-aminoethyl carbamic acid for producing photographic baths and developer compositions
AGFA GEVAERT AG2 citations62
US4148653AApr 10, 1979
Restraining layer for retarding the diffusion of hydroxyl ions in the dye diffusion transfer process
AGFA GEVAERT AG2 citations60
US4812576AMar 14, 1989
Imino derivatives of 4-halogen-pyrazolone-5
AGFA GEVAERT AG2 citations59
US4738919AApr 19, 1988
Photosensitive photographic silver halide recording material
AGFA GEVAERT AG4 citations59
US4152161AMay 1, 1979
Photographic silver halide emulsion with hetero-N containing polymeric binder
AGFA GEVAERT AG2 citations58
US4088493AMay 9, 1978
Diffusion retarding layers comprising polymers of dimethoxyethylene
AGFA GEVAERT AG2 citations58
US4480027AOct 30, 1984
Photographic recording material for the production of color images to be viewed by reflected light
AGFA GEVAERT AG2 citations56
US5134061AJul 28, 1992
Photographic recording material
AGFA GEVAERT AG1 citations52
US5118598AJun 2, 1992
Color photographic silver halide material having a magenta coupler and an oil former compound
AGFA GEVAERT AG0 citations52
US4617255AOct 14, 1986
Color coupler-containing photographic material
AGFA GEVAERT AG0 citations52
US4855222AAug 8, 1989
Color photographic recording material
AGFA GEVAERT AG0 citations51
US4030929AJun 21, 1977
Photographic silver halide emulsion
AGFA GEVAERT AG0 citations42
US5200305AApr 6, 1993
Color photographic recording material containing color couplers which yield heat-stable dyes
AGFA GEVAERT AG0 citations40
US5336780AAug 9, 1994
5-amino-1-hydroximoyl pyrazoles
AGFA GEVAERT AG1 citations38