Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4946770 | Silver halide color photographic material | Osamu Takahashi, Tsumoru Hirano | 1990-08-07 |
| 4865963 | Silver halide color photographic materials containing novel magenta coupler | Nobuo Furutachi, Tadahisa Sato, Akio Mitsui, Minoru Sakai, Masakazu Morigaki +5 more | 1989-09-12 |
| 4308336 | Color photographic sensitive materials | Kokichi Waki, Keiichi Adachi | 1981-12-29 |
| 4267250 | Color diffusion transfer photographic element | Kokichi Waki, Motohiko Tsubota, Osamu Takahashi, Asao Nakatsuka | 1981-05-12 |