Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863830 | Process for hard tone development of silver halide photographic light-sensitive material | Kazumi Watase | 1989-09-05 |
| 4859567 | Method of forming high contrast negative images | Mitsunori Hirano | 1989-08-22 |
| 4839259 | Silver halide photographic material and method for forming an image using the same | Senzo Sasaoka, Nobuaki Inoue | 1989-06-13 |
| 4833064 | Process for the formation of a high contrast negative image | Morio Yagihara, Mitsunori Hirano, Katsumi Hayashi | 1989-05-23 |
| 4828968 | Method of developing photographic light-sensitive materials | — | 1989-05-09 |