Inventor
KUNITZ FRIEDRICH-WILHELM
DE18 patents
⚠️ This page may combine multiple inventors who share the name “KUNITZ FRIEDRICH-WILHELM”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AGFA GEVAERT AG
17 patentsUS4833070AMay 23, 1989
Color photographic recording material containing a yellow DIR coupler
AGFA GEVAERT AG11 citations73
US4617256AOct 14, 1986
Color photographic color coupler-containing 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
US4438195AMar 20, 1984
Photographic recording material containing a developer compound
AGFA GEVAERT AG9 citations73
US5009985AApr 23, 1991
Iron complexes and bleaching baths containing same
AGFA GEVAERT AG10 citations72
US4756998AJul 12, 1988
Polymeric couplers and light-sensitive photographic silver halide recording material containing such couplers
AGFA GEVAERT AG6 citations63
US4840880AJun 20, 1989
Color photographic recording material containing a yellow DIR coupler
AGFA GEVAERT AG6 citations62
US4386155AMay 31, 1983
Process for the production of photographic images
AGFA GEVAERT AG3 citations62
US4267263AMay 12, 1981
Use of β-aminoethyl carbamic acid for producing photographic baths and developer compositions
AGFA GEVAERT AG2 citations62
US3998641ADec 21, 1976
Photographic material containing yellow couplers
AGFA GEVAERT AG4 citations62
US4897341AJan 30, 1990
Color photographic recording material containing a dir-coupler
AGFA GEVAERT AG5 citations60
US4138557AFeb 6, 1979
2-Equivalent yellow couplers
AGFA GEVAERT AG2 citations60
US4138263AFeb 6, 1979
Photographic silver halide material with 2-equivalent, N-heterocyclic yellow couplers
AGFA GEVAERT AG3 citations60
US4762777AAug 9, 1988
Polyurea and polyurethane compounds containing a photographically useful group, and a photographic recording material containing such compounds
AGFA GEVAERT AG2 citations56
US4322492AMar 30, 1982
Process for the development of color photographic images with p-dialkylaminoaniline color developers
AGFA GEVAERT AG5 citations53
US5143823ASep 1, 1992
Color photographic recording material containing color couplers
AGFA GEVAERT AG1 citations51
US4186019AJan 29, 1980
Color photographic material containing novel 2-equivalent yellow couplers
AGFA GEVAERT AG1 citations42