Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863845 | Internal latent image type direct positive silver halide emulsions and process for producing the same | Ashita Murai, Tatsuo Heki | 1989-09-05 |
| 4845023 | Silver halide photographic light-sensitive material | — | 1989-07-04 |
| 4801524 | Process for preparing silver halide emulsion and photographic light-sensitive material containing said emulsion | Tadao Shishido, Yoshiaki Suzuki | 1989-01-31 |