Issued Patents All Time
Showing 51–66 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4346165 | Process for improving light fastness of color images | Satoru Sawada, Shigeru Oono, Nobuo Seto, Yoshiaki Suzuki, Kotaro Nakamura | 1982-08-24 |
| 4336325 | Color photographic light-sensitive element | Kozo Aoki, Satoru Sawada | 1982-06-22 |
| 4332886 | Color photographic light-sensitive material including an organic spirobis compound color coupler | Kozo Aoki, Tetsuro Kojima, Satoru Sawada | 1982-06-01 |
| 4310619 | Color photographic material and process incorporating a novel magenta coupler | Seiji Ichijima, Yoshiharu Yabuki, Toshiyuki Watanabe | 1982-01-12 |
| 4308343 | Process and material for forming color photographic image | Seiji Ichijima | 1981-12-29 |
| 4301235 | Process and material for forming color photographic image | Seiji Ichijima | 1981-11-17 |
| 4297440 | Color photographic light-sensitive element | Kozo Aoki, Satoru Sawada, Yoshiharu Yabuki | 1981-10-27 |
| 4293691 | Method for preparing magenta couplers having thioether groups | Nobuo Seto | 1981-10-06 |
| 4279990 | Color photographic materials | Kozo Aoki, Satoru Sawada | 1981-07-21 |
| 4273861 | Multilayer color photographic materials utilizing an interlayer correction coupler | Keisuke Shiba, Takeshi Hirose, Jun Hayashi, Atsuaki Arai, Harumi Katsuyama | 1981-06-16 |
| 4266020 | Color photographic light-sensitive material | Nobuo Sakai, Kotaro Nakamura, Masakazu Morigaki | 1981-05-05 |
| 4264723 | Silver halide color photographic materials | Seiji Ichijima, Nobuo Seto, Toshiyuki Watanabe | 1981-04-28 |
| 4241168 | Photographic coupler | Atsuaki Arai, Keisuke Shiba, Minoru Yamada | 1980-12-23 |
| 4237217 | Silver halide emulsion containing two-equivalent magenta coupler | Atsuaki Arai, Keisuke Shiba, Minoru Yamada, Kotaro Nakamura | 1980-12-02 |
| 4220470 | Silver halide material containing photographic magenta coupler | Kotaro Nakamura, Atsuaki Arai, Minoru Yamada, Keisuke Shiba | 1980-09-02 |
| 4199361 | Color photographic light-sensitive element | — | 1980-04-22 |