Gerald Jan
23Patents
5h-index
10Co-inventors
66Inventor score
Filing activity: Nov 11, 1976 → Sep 24, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4304846A | Method for processing silver dye-bleach materials | Physics | 14 | Expired |
| US5824785A | Dyes for ink jet printing | Chemistry; Metallurgy | 9 | Expired |
| US4266011A | Process for the production of colored photographic images by the silver dye-bleach process | Physics | 7 | Expired |
| US4404273A | Process for the production of photographic color images by the silver dye bleach process | Physics | 6 | Expired |
| US6320031A | Monoazo dyes and their preparation and use | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6068687A | Azo dyes and their preparation and use | Chemistry; Metallurgy | 5 | Expired |
| US4138256A | Method of processing photographic silver dye bleach materials | Chemistry; Metallurgy | 5 | Expired |
| US5684140A | Dyes for ink jet printing | Chemistry; Metallurgy | 4 | Expired |
| US4379819A | Color-photographic recording material for the silver dye bleach process | Physics | 4 | Expired |
| US7828886B2 | Anthrapyridone dyes and their preparation and use | Chemistry; Metallurgy | 4 | Active |
| US4521591A | Oil-soluble disazo dyes and their use in color-photographic recording materials for the silver dye bleach process | Physics | 3 | Expired |
| US4202698A | Quinoxalines and their use in photographic processes | Physics | 2 | Expired |
| US4357280A | Use of tertiary phosphines in photographic silver dye bleach materials | Chemistry; Metallurgy | 2 | Expired |
| US4465763A | Process for the production of photographic color images by the silver dye bleach process | Physics | 2 | Expired |
| US5043257A | Azo dyes for photographic silver dye bleach material | Chemistry; Metallurgy | 2 | Expired |
| US4456668A | Azo dyes containing phosphamic acid diester groups | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4145217A | Quinoxalines and their use in photographic processes | Physics | 2 | Expired |
| US4369318A | Process for the production of colored photographic images by the silver dye-bleach process | Physics | 2 | Expired |
| US4323682A | Quinoxalines and their use in photographic processes | Physics | 2 | Expired |
| US6562115B2 | Azo dyes and their preparation and use | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7632345B2 | Phthalocyanine dyes and their preparation and use | Chemistry; Metallurgy | 0 | Active |
| US4216320A | Quinoxaline bleach catalysts | Physics | 0 | Expired |
| US4409143A | Monoazo dyes containing phosphamic acid diester groups | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.