Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888268 | Silver halide photographic materials comprising blocked photographic reagants releasing plug groups | Isamu Itoh, Yoshio Inagaki | 1989-12-19 |
| 4857447 | Silver halide color photographic light-sensitive material containing a coupler having a dye moiety | Koji Tamoto | 1989-08-15 |
| 4842985 | Silver halide color photographic material | Koji Tamoto, Keiji Mihayashi, Seiji Ichijima, Isamu Itoh, Yoshisada Nakamura | 1989-06-27 |
| 4831152 | 5-halo-6-nitro-2-substituted benzoxazole compounds | Isamu Itoh, Hidetoshi Kobayashi, Kazuyoshi Yamakawa | 1989-05-16 |