Inventor
HELLING GUENTER
DE61 patents
⚠️ This page may combine multiple inventors who share the name “HELLING GUENTER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AGFA GEVAERT AG
34 patentsUS4714671ADec 22, 1987
Color photographic recording material containing a polymeric gelatine plasticizer
AGFA GEVAERT AG19 citations82
US4388403AJun 14, 1983
Process for the preparation of dispersions of hydrophobic substances in water
AGFA GEVAERT AG25 citations82
US4353980AOct 12, 1982
Process for the production of protective layers for photographic materials
AGFA GEVAERT AG25 citations82
US5935773AAug 10, 1999
Colour photographic silver halide material
AGFA GEVAERT AG10 citations74
US5292610AMar 8, 1994
Microcapsules and their use
AGFA GEVAERT AG13 citations74
US4943519AJul 24, 1990
Light sensitive, stabilized photographic recording material
AGFA GEVAERT AG18 citations74
US4939077AJul 3, 1990
Photographic recording material containing polyester compounds having free acid groups
AGFA GEVAERT AG9 citations74
US4921782AMay 1, 1990
Magenta coupler monomer, a polymeric magenta coupler and a color photographic recording material containing the polymeric magenta coupler
AGFA GEVAERT AG7 citations74
US4840885AJun 20, 1989
Color photographic recording material for the dye diffusion transfer process
AGFA GEVAERT AG8 citations74
US4724197AFeb 9, 1988
Color photographic recording material and a process for the production of color photographic images
AGFA GEVAERT AG10 citations74
US4585724AApr 29, 1986
Image receptor layer comprising polyvinyl imidazole and cationic polymer
AGFA GEVAERT AG11 citations74
US4513080AApr 23, 1985
Photographic silver halide containing recording material with crosslinked microgel particles
AGFA GEVAERT AG12 citations74
US4459130AJul 10, 1984
Solid preparation of water-soluble acid dye and polymer particles with quaternary ammonium or phosphonium groups
AGFA GEVAERT AG9 citations74
US4379838AApr 12, 1983
Photosensitive photographic recording material comprising a dyed layer
AGFA GEVAERT AG16 citations74
US4284708AAug 18, 1981
Photographic film unit for the production of colored transfer images
AGFA GEVAERT AG13 citations74
US4353972AOct 12, 1982
Light-sensitive photographic material comprising polymeric mordant layer
AGFA GEVAERT AG13 citations73
US4294920AOct 13, 1981
Photographic silver halide emulsion
AGFA GEVAERT AG8 citations73
US5085981AFeb 4, 1992
Photographic silver halide element with protective layer
AGFA GEVAERT AG7 citations71
US5472838ADec 5, 1995
Process for the production of a silver halide emulsion
AGFA GEVAERT AG5 citations63
US4939079AJul 3, 1990
Photographic recording material
AGFA GEVAERT AG3 citations63
US4756998AJul 12, 1988
Polymeric couplers and light-sensitive photographic silver halide recording material containing such couplers
AGFA GEVAERT AG6 citations63
US4426438AJan 17, 1984
Anionic copolymers containing polyvalent metal cations and their use in photographic materials
AGFA GEVAERT AG4 citations63
US5731138AMar 24, 1998
Color photographic material
AGFA GEVAERT AG6 citations62
US5441855AAug 15, 1995
Color photographic recording material
AGFA GEVAERT AG5 citations62
US5441862AAug 15, 1995
Color photographic recording material
AGFA GEVAERT AG6 citations62
US5273870ADec 28, 1993
Color photographic negative recording material containing DIR compounds
AGFA GEVAERT AG6 citations62
US4284718AAug 18, 1981
Photographic silver halide materials containing sulfur containing polymers
AGFA GEVAERT AG4 citations62
US4379829AApr 12, 1983
Photographic material containing a temporary barrier layer applied from an organic solution
AGFA GEVAERT AG2 citations58
US5070006ADec 3, 1991
Photographic material comprising an NC layer
AGFA GEVAERT AG5 citations57
US6221572B1Apr 24, 2001
Color photographic material
AGFA GEVAERT AG1 citations52
US5888719AMar 30, 1999
Color photographic silver halide material
AGFA GEVAERT AG1 citations52
US5518877AMay 21, 1996
Photographic silver halide material
AGFA GEVAERT AG0 citations52
US5508157AApr 16, 1996
Color photographic silver halide material
AGFA GEVAERT AG0 citations52
US5455154AOct 3, 1995
Photographic recording material
AGFA GEVAERT AG1 citations52
AGFA GEVAERT
8 patentsUS6313196B1Nov 6, 2001
Ink jet ink
AGFA GEVAERT9 citations74
US5674668AOct 7, 1997
Photographic recording material
AGFA GEVAERT13 citations74
US6558887B2May 6, 2003
Color photographic silver halide material
AGFA GEVAERT12 citations73
US6242169B1Jun 5, 2001
Color photographic material
AGFA GEVAERT7 citations73
US6534254B1Mar 18, 2003
Color photographic print material
AGFA GEVAERT12 citations70
US5795707AAug 18, 1998
Photographic silver halide material
AGFA GEVAERT5 citations63
US6207283B1Mar 27, 2001
Polymer
AGFA GEVAERT4 citations61
US6689552B2Feb 10, 2004
Color photographic silver halide material
AGFA GEVAERT2 citations59
AGFA GEVAERT NV
2 patentsHELLING GUENTER
2 patentsAGFA N V
1 patentAGFA GEVAERT AB
1 patentMILES INC
1 patentREEL FRAME AGFA GEVAERT AKTIEN
1 patentShowing the top 50 of 61 patents by PatentIndex Score.