Inventor
VETTER HANS
21 patents
⚠️ This page may combine multiple inventors who share the name “VETTER HANS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AGFA GEVAERT AG
14 patentsUS5021331AJun 4, 1991
Color photographic recording material containing a DIR coupler
AGFA GEVAERT AG12 citations74
US5215875AJun 1, 1993
Color photographic recording material
AGFA GEVAERT AG10 citations73
US4046574ASep 6, 1977
Color photographic material with homophthalimide thioether development inhibitor
AGFA GEVAERT AG7 citations73
US4360581ANov 23, 1982
Color photographic recording material containing non-diffusing electron donor compounds
AGFA GEVAERT AG7 citations72
US4198235AApr 15, 1980
Dye diffusion transfer process employing compounds that release sulfonamide dye providing radicals
AGFA GEVAERT AG9 citations72
US5021332AJun 4, 1991
Color photographic recording material containing a DIR coupler
AGFA GEVAERT AG6 citations63
US5200306AApr 6, 1993
Color photographic recording material containing a coupler which releases a photographically active compound
AGFA GEVAERT AG5 citations62
US4810615AMar 7, 1989
Colour photographic recording material containing a dye releasing compound for cyan dyes and a colour image produced with these dyes
AGFA GEVAERT AG6 citations62
US4250252AFeb 10, 1981
Light-sensitive color photographic material
AGFA GEVAERT AG5 citations62
US4242435ADec 30, 1980
Photographic dye diffusion transfer process
AGFA GEVAERT AG4 citations62
US4179291ADec 18, 1979
Photographic dye diffusion transfer process
AGFA GEVAERT AG2 citations62
US4171220AOct 16, 1979
Photographic dye diffusion transfer process
AGFA GEVAERT AG4 citations62
US4156608AMay 29, 1979
Color photographic material with improved color reproduction
AGFA GEVAERT AG6 citations59
US4755452AJul 5, 1988
Color photographic recording material and a process for the production of photographic images
AGFA GEVAERT AG0 citations51
AGFA GEVAERT NV
4 patentsUS4605613AAug 12, 1986
Ballasted dye compounds with linkages containing three aromatic nuclei for use in a dye diffusion transfer process and element
AGFA GEVAERT NV7 citations72
US4777124AOct 11, 1988
Azo dye compounds for use in a dye diffusion transfer process and photographic elements incorporating them
AGFA GEVAERT NV4 citations62
US5037731AAug 6, 1991
Organic compounds for use in a dye diffusion transfer process and photographic elements incorporating them
AGFA GEVAERT NV5 citations61
US4273855AJun 16, 1981
Photographic diffusion transfer process and material for the production of color images and suitable compounds therefor
AGFA GEVAERT NV2 citations60