Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5064751 | Method of processing a silver halide color photographic material and a color developer where the developer contains a hydrazine compound | Nobutaka Ohki, Hideaki Naruse, Hiroshi Fujimoto, Jiro Tsukahara, Morio Yagihara +1 more | 1991-11-12 |
| 5006456 | Method for processing silver halide color photographic light-sensitive materials using sulphinc acids and salts or their precursors | Masakazu Morigaki, Takatoshi Ishikawa, Nobuo Seto, Toshio Koshimizu, Shinji Ueda | 1991-04-09 |
| 4960684 | Method for processing silver halide color photographic materials | Takatoshi Ishikawa, Hiroshi Fujimoto, Morio Yagihara | 1990-10-02 |
| 4956267 | Method for forming a direct positive color image | Shinji Ueda, Tatsuo Heki, Noriyuki Inoue, Takatoshi Ishikawa, Nobutaka Ohki +3 more | 1990-09-11 |
| H809 | Method for processing silver halide color photographic material | Takatoshi Ishikawa, Hiroshi Fujimoto, Morio Yagihara | 1990-08-07 |
| 4920041 | Method for processing a silver halide color photographic material using a developer substantially free of benzyl alcohol and sulfite | Nobutaka Ohki, Takatoshi Ishikawa | 1990-04-24 |
| 4897339 | Method for processing a silver halide color photographic material and a color developing composition comprising hydroxylamines and stabilizing agents | Takatoshi Ishikawa, Morio Yagihara | 1990-01-30 |
| 4842993 | Method for processing silver halide color photographic material | Morio Yagihara, Hiroshi Fujimoto, Takatoshi Ishikawa | 1989-06-27 |
| 4833068 | Color photographic developing solution composition and method for processing a silver halide color photographic material | Nobutaka Ohki, Hiroshi Fujimoto | 1989-05-23 |
| 4801521 | Method for processing silver halide color photographic material with a color developer comprising a hydrazine derivative | Nobutaka Ohki, Nobuo Seto, Hideaki Naruse, Morio Yagihara, Takatoshi Ishikawa +1 more | 1989-01-31 |