Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4336322 | Color photographic light-sensitive material | Shinsaku Fujita, Koichi Koyama, Kokichi Waki | 1982-06-22 |
| 4310693 | o-Aminophenol compounds | Shinsaku Fujita, Koichi Koyama | 1982-01-12 |