Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| H691 | Heat developable photographic element | Hiroshi Kitaguchi | 1989-10-03 |
| 4868097 | Heat development dye image forming method with surface active agents | Yasuo Aotsuka, Masakazu Yoneyama | 1989-09-19 |
| 4845018 | Image-forming process involving heating step | Kozo Sato, Hiroshi Kitaguchi, Masashi Takeuchi, Masaaki Tsukase | 1989-07-04 |
| 4824759 | Method for forming an image | Kozo Sato, Hiroshi Kitaguchi, Masashi Takeuchi, Masaaki Tsukase | 1989-04-25 |