Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865962 | Photographic light-sensitive material and method of developing the same | Kazunori Hasebe, Masahiro Asami, Keisuke Shiba, Toshihiro Nishikawa, Kei Sakanoue +1 more | 1989-09-12 |
| 4820624 | Corner development type silver halide photographic emulsions | Kazunori Hasebe, Masahiro Asami, Keisuke Shiba, Toshihiro Nishikawa | 1989-04-11 |
| 4806462 | Silver halide photographic material comprising doped divalent metal | Seiji Yamashita, Shunji Takada | 1989-02-21 |