Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863844 | Gold and sulfur sensitized silver halide light-sensitive photographic material | Mitsuhiro Okumura, Shigeo Tanaka | 1989-09-05 |
| 4830958 | Silver halide photographic light-sensitive material which is excellent in rapid processability and has not very much sensitivity variation caused by a change on standing in the preparation of the light-sensitive material | Mitsuhiro Okumura, Shigeo Tanaka | 1989-05-16 |
| 4818671 | Rapidly processable silver halide color photosensitive material | Mitsuhiro Okumura, Takaaki Kojima, Shigeo Tanaka | 1989-04-04 |
| 4797350 | Process for forming dye-image using a developer comprising an image stabilizer, a hydroxylamine and not containing benzyl alcohol | Shigeo Chino, Mitsuhiro Okumura, Kaoru Onodera | 1989-01-10 |