Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4623615 | Silver halide photographic light-sensitive materials | Shigeki Yokoyama | 1986-11-18 |
| 4555480 | Silver halide photographic light-sensitive material containing a polyoxyethylene surfactant and a nitron compound | Shigeki Yokoyama, Koki Nakamura, Jyounichi Kouda | 1985-11-26 |
| 4304852 | Silver halide photographic light-sensitive material | Naohiko Sugimoto, Shinzo Kishimoto, Katsumi Ryoke, Masakazu Yoneyama | 1981-12-08 |