Yoshitaka Akimura
15Patents
12h-index
13Co-inventors
67Inventor score
Filing activity: Aug 11, 1977 → Sep 2, 1983
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4323643A | Silver halide photographic light-sensitive materials | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4224401A | Silver halide photographic emulsions and image forming process | Physics | 35 | Expired |
| US4168977A | Silver halide photographic emulsion | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4221857A | Process for producing a high contrast photographic image | Physics | 28 | Expired |
| US4385108A | Method of forming negative dot images | Physics | 25 | Expired |
| US4452882A | Silver halide photographic materials and process of developing them | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4272606A | Method of forming a high-contrast photographic image | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4332878A | Photographic image-forming method | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4243739A | Silver halide photographic light-sensitive material | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4311781A | Highly-sensitive high-contrast photographic materials | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4237214A | Process for forming contrasty image | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4241164A | Highly-sensitive high-contrast photographic materials | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4166742A | Contrasty light-sensitive silver halide material containing a hydrazine derivative and a heterocyclic mercaptan | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4377634A | Method for forming high contrast photographic image | Chemistry; Metallurgy | 12 | Expired |
| US4520099A | Silver halide photographic light-sensitive materials | Physics | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.