Inventor · disambiguated record
Erich Wolff
Also filed as: SALECK WIHELM · WOLFF ERICH
43 granted patents·255 citations·filing 1973–1998
97Inventor score
Top patents by PatentIndex Score
43 records- 0194US5362615APhotographic recording material containing a hydroquinone diether compoundAGFA AG·Filed 1993·Granted Nov 8, 1994·36 cites·22 claims
- 0287US4301240APhotographic silver halide material with cross-linked particulate acrylic or methacrylic polymerAGFA GEVAERT AG·Filed 1978·Granted Nov 17, 1981·19 cites·7 claims
- 0380US4146400AColor photographic material containing new 2-equivalent yellow couplersAGFA GEVAERT AG·Filed 1977·Granted Mar 27, 1979·14 cites·3 claims
- 0477US5004676AProcess for the production of color photographic images comprising replenishing the developing solutionAGFA GEVAERT AG·Filed 1990·Granted Apr 2, 1991·10 cites·3 claims
- 0574US4873338AProcess for the preparation of 2-amino-5-acylamino phenols and starting compounds suitable thereforAGFA GEVAERT AG·Filed 1987·Granted Oct 10, 1989·11 cites·3 claims
- 0671US4581324AColor photographic recording material for the production of color images viewed by reflected lightAGFA GEVAERT AG·Filed 1984·Granted Apr 8, 1986·12 cites·5 claims
- 0769US5415989AColor photographic recording material containing a color coupler of the pyrazoloazole seriesAGFA GIVAERT AG·Filed 1994·Granted May 16, 1995·9 cites·17 claims
- 0869US4835094AColor photographic recording material containing a color coupler of the pyrazoloazole seriesAGFA GEVAERT AG·Filed 1987·Granted May 30, 1989·9 cites·1 claims
- 0969US4529691AColor photographic recording material containing color couplersAGFA GEVAERT AG·Filed 1984·Granted Jul 16, 1985·13 cites·1 claims
- 1068US4095983APhotographic material comprising cyclic sulfonamide substituted yellow color couplersAGFA GEVAERT AG·Filed 1976·Granted Jun 20, 1978·8 cites·4 claims
- 1166US4898811AColor photographic silver halide material with sulfonylphenol oil formerAGFA GEVAERT AG·Filed 1988·Granted Feb 6, 1990·10 cites·5 claims
- 1263US4414309APhotographic recording material containing an aldehyde removerAGFA GEVAERT AG·Filed 1982·Granted Nov 8, 1983·9 cites·5 claims
- 1363US4278759AProcess of preparing photographic silver halide emulsionAGFA GEVAERT AG·Filed 1979·Granted Jul 14, 1981·7 cites·2 claims
- 1459US4845022AColor photographic recording material containing a color coupler of the pyrazoloazole typeAGFA GEVAERT AG·Filed 1987·Granted Jul 4, 1989·7 cites·3 claims
- 1558US4001016APolymers which can be cross-linked by photopolymerizationAGFA GEVAERT AG·Filed 1974·Granted Jan 4, 1977·10 cites·2 claims
- 1655US5015565AColor photographic recording materialAGFA GEVAERT AG·Filed 1989·Granted May 14, 1991·6 cites·3 claims
- 1754US5158864AColor photographic materialAGFA GEVAERT AG·Filed 1990·Granted Oct 27, 1992·4 cites·3 claims
- 1853US4056397ADye diffusion transfer material with graft polymer binding layerAGFA GEVAERT AG·Filed 1975·Granted Nov 1, 1977·5 cites·3 claims
- 1949US4418142ALight-sensitive photographic silver halide recording materialAGFA GEVAERT AG·Filed 1981·Granted Nov 29, 1983·5 cites·5 claims
- 2049US3936428APhotopolymerizable polymer based on an etherified polyhydroxyalkyl acrylateBAYER AG·Filed 1973·Granted Feb 3, 1976·6 cites·15 claims
- 2147US4985351APhotographic recording materialAGFA GEVAERT AG·Filed 1989·Granted Jan 15, 1991·11 cites·10 claims
- 2243US4812576AImino derivatives of 4-halogen-pyrazolone-5AGFA GEVAERT AG·Filed 1987·Granted Mar 14, 1989·2 cites·2 claims
- 2342US4386155AProcess for the production of photographic imagesAGFA GEVAERT AG·Filed 1981·Granted May 31, 1983·3 cites·3 claims
- 2441US4939079APhotographic recording materialAGFA GEVAERT AG·Filed 1989·Granted Jul 3, 1990·3 cites·6 claims
- 2541US4871657AColor photographic recording material with easily dispersible color couplersAGFA GEVAERT AG·Filed 1989·Granted Oct 3, 1989·3 cites·1 claims
- 2641US4738919APhotosensitive photographic silver halide recording materialAGFA GEVAERT AG·Filed 1986·Granted Apr 19, 1988·4 cites·5 claims
- 2741US4381339APhotographic recording material and non-diffusing compounds to be used in the material which contains a photographically active group which can be split offAGFA GEVAERT AG·Filed 1981·Granted Apr 26, 1983·3 cites·7 claims
- 2841US4267263AUse of β-aminoethyl carbamic acid for producing photographic baths and developer compositionsAGFA GEVAERT AG·Filed 1979·Granted May 12, 1981·2 cites·8 claims
- 2941US4152161APhotographic silver halide emulsion with hetero-N containing polymeric binderAGFA GEVAERT AG·Filed 1976·Granted May 1, 1979·2 cites·3 claims
- 3037US5134061APhotographic recording materialAGFA GEVAERT AG·Filed 1991·Granted Jul 28, 1992·1 cites·4 claims
- 3136US4148653ARestraining layer for retarding the diffusion of hydroxyl ions in the dye diffusion transfer processAGFA GEVAERT AG·Filed 1977·Granted Apr 10, 1979·2 cites·22 claims
- 3236US4088493ADiffusion retarding layers comprising polymers of dimethoxyethyleneAGFA GEVAERT AG·Filed 1975·Granted May 9, 1978·2 cites·1 claims
- 3335US4865960APolymeric magneta coupler and a colour photographic recording material containing this polymeric magenta couplerHELLING GUENTER·Filed 1987·Granted Sep 12, 1989·2 cites·3 claims
- 3432US6028199AHardeners for photographic materialsAGFA GEVAERT NV·Filed 1998·Granted Feb 22, 2000·0 cites·6 claims
- 3532US5719011APhotographic recording materialAGFA GEVAERT AG·Filed 1996·Granted Feb 17, 1998·2 cites·8 claims
- 3632US5118598AColor photographic silver halide material having a magenta coupler and an oil former compoundAGFA GEVAERT AG·Filed 1990·Granted Jun 2, 1992·0 cites·5 claims
- 3732US4617255AColor coupler-containing photographic materialAGFA GEVAERT AG·Filed 1985·Granted Oct 14, 1986·0 cites·2 claims
- 3832US4480027APhotographic recording material for the production of color images to be viewed by reflected lightAGFA GEVAERT AG·Filed 1982·Granted Oct 30, 1984·2 cites·2 claims
- 3931US5418123AColor photographic recording material containing a color coupler of the pyrazoloazole seriesBAYER AG·Filed 1993·Granted May 23, 1995·0 cites·10 claims
- 4030US4030929APhotographic silver halide emulsionAGFA GEVAERT AG·Filed 1976·Granted Jun 21, 1977·0 cites·5 claims
- 4129US4855222AColor photographic recording materialAGFA GEVAERT AG·Filed 1988·Granted Aug 8, 1989·0 cites·1 claims
- 4228US5200305AColor photographic recording material containing color couplers which yield heat-stable dyesAGFA GEVAERT AG·Filed 1990·Granted Apr 6, 1993·0 cites·2 claims
- 4327US5336780A5-amino-1-hydroximoyl pyrazolesAGFA GEVAERT AG·Filed 1993·Granted Aug 9, 1994·1 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Erich Wolff files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →