Erich Wolff
43Patents
9h-index
45Co-inventors
75Inventor score
Filing activity: Dec 27, 1973 → May 1, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5362615A | Photographic recording material containing a hydroquinone diether compound | Physics | 32 | Expired |
| US4301240A | Photographic silver halide material with cross-linked particulate acrylic or methacrylic polymer | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4581324A | Color photographic recording material for the production of color images viewed by reflected light | Physics | 11 | Expired |
| US5004676A | Process for the production of color photographic images comprising replenishing the developing solution | Physics | 10 | Expired |
| US4898811A | Color photographic silver halide material with sulfonylphenol oil former | Physics | 10 | Expired |
| US4985351A | Photographic recording material | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5415989A | Color photographic recording material containing a color coupler of the pyrazoloazole series | Physics | 9 | Expired |
| US4835094A | Color photographic recording material containing a color coupler of the pyrazoloazole series | Physics | 9 | Expired |
| US4529691A | Color photographic recording material containing color couplers | Physics | 9 | Expired |
| US4146400A | Color photographic material containing new 2-equivalent yellow couplers | Physics | 9 | Expired |
| US4001016A | Polymers which can be cross-linked by photopolymerization | Physics | 8 | Expired |
| US4095983A | Photographic material comprising cyclic sulfonamide substituted yellow color couplers | Physics | 7 | Expired |
| US4414309A | Photographic recording material containing an aldehyde remover | Physics | 6 | Expired |
| US4873338A | Process for the preparation of 2-amino-5-acylamino phenols and starting compounds suitable therefor | Chemistry; Metallurgy | 5 | Expired |
| US4845022A | Color photographic recording material containing a color coupler of the pyrazoloazole type | Physics | 5 | Expired |
| US5158864A | Color photographic material | Physics | 4 | Expired |
| US4418142A | Light-sensitive photographic silver halide recording material | Physics | 4 | Expired |
| US4278759A | Process of preparing photographic silver halide emulsion | Physics | 4 | Expired |
| US4738919A | Photosensitive photographic silver halide recording material | Physics | 3 | Expired |
| US4381339A | Photographic recording material and non-diffusing compounds to be used in the material which contains a photographically active group which can be split off | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4939079A | Photographic recording material | Physics | 3 | Expired |
| US4056397A | Dye diffusion transfer material with graft polymer binding layer | Physics | 3 | Expired |
| US4386155A | Process for the production of photographic images | Physics | 2 | Expired |
| US4152161A | Photographic silver halide emulsion with hetero-N containing polymeric binder | Physics | 2 | Expired |
| US5719011A | Photographic recording material | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.