Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4600687 | Photographic light-sensitive material | Taku Nakamura, Mitsunori Hirano, Kunio Ishigaki | 1986-07-15 |
| 4444926 | Method of hardening gelatin and photographic materials produced thereby | Kunio Ishigaki, Kiyotaka Hori | 1984-04-24 |
| 4427768 | Method of hardening gelatin | Katuji Kitatani, Hidefumi Sera, Atsuaki Arai, Kunio Ishigaki, Haruo Ogura | 1984-01-24 |
| 4352873 | Silver halide color photographic materials | Yuzo Toda, Junji Koizumi, Hidefumi Sera, Seiiti Kubodera | 1982-10-05 |
| 4341856 | Photosensitive lithographic printing plate precursors | Tadao Toyama, Sho Nakao, Keisuke Shiba, Hidefumi Sera | 1982-07-27 |
| 4323644 | Photographic material containing polymers with active ester groups | Taku Nakamura, Kunio Ishigaki | 1982-04-06 |
| 4294921 | Method of hardening gelatin | Jun Yamaguchi, Takashi Naoi, Hidefumi Sera, Kunio Ishigaki | 1981-10-13 |
| 4268627 | Photographic light-sensitive material | Hidefumi Sera, Katuzi Kitatani, Kunio Ishigaki, Hisashi Shiraishi | 1981-05-19 |