Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4452882 | Silver halide photographic materials and process of developing them | Yoshitaka Akimura, Eiichi Okutsu, Shigenori Moriuchi, Naomi Saeki, Hiroyuki Mifune | 1984-06-05 |
| 4293639 | Bleaching compositions for photographic processing | Isamu Itoh, Takatoshi Ishikawa | 1981-10-06 |
| 4292401 | Bleaching composition for photographic processing | Isamu Itoh, Takatoshi Ishikawa | 1981-09-29 |
| 4268618 | Bleaching composition for photographic processing | — | 1981-05-19 |