Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4427768 | Method of hardening gelatin | Katuji Kitatani, Hidefumi Sera, Masasi Ogawa, Kunio Ishigaki, Haruo Ogura | 1984-01-24 |
| 4404274 | Photographic light sensitive element containing yellow color coupler and method for forming yellow photographic images | Yasushi Oishi, Akio Okumura, Kiyoshi Nakazyo | 1983-09-13 |
| 4273861 | Multilayer color photographic materials utilizing an interlayer correction coupler | Keisuke Shiba, Takeshi Hirose, Jun Hayashi, Nobuo Furutachi, Harumi Katsuyama | 1981-06-16 |
| 4269936 | Process of forming yellow photographic images | Yasushi Oishi, Kiyoshi Nakazyo, Atsushi Sugizaki, Akio Okumura | 1981-05-26 |
| 4241168 | Photographic coupler | Keisuke Shiba, Minoru Yamada, Nobuo Furutachi | 1980-12-23 |
| 4237217 | Silver halide emulsion containing two-equivalent magenta coupler | Keisuke Shiba, Minoru Yamada, Nobuo Furutachi, Kotaro Nakamura | 1980-12-02 |
| 4220470 | Silver halide material containing photographic magenta coupler | Nobuo Furutachi, Kotaro Nakamura, Minoru Yamada, Keisuke Shiba | 1980-09-02 |