Issued Patents All Time
Showing 51–73 of 73 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5314799 | Method for preparing a fogged typed direct positive silver halide emulsion | — | 1994-05-24 |
| 5238780 | Method of image formation | Kazunobu Katoh | 1993-08-24 |
| 5200298 | Method of forming images | Mitsunori Hirano, Senzo Sasaoka | 1993-04-06 |
| 5153098 | Image forming method | — | 1992-10-06 |
| 5139921 | Process for forming super high contrast negative images | Hisashi Okada, Morio Yagihara | 1992-08-18 |
| 4978603 | Image forming process comprising developing fine grain silver halide emulsion with a hydroquinone developer | Nobuaki Inoue, Morio Yagihara | 1990-12-18 |
| 4956263 | Silver halide photographic material containing a compound capable of releasing a dye | Kunio Ishigaki, Kazunobu Katoh, Nobuaki Inoue, Hisashi Okada, Toshinao Ukai +2 more | 1990-09-11 |
| 4939067 | Silver halide photographic materials | Shingo Nishiyama | 1990-07-03 |
| 4912017 | Silver halide photographic materials | Shingo Nishiyama | 1990-03-27 |
| 4908293 | Superhigh contrast negative type silver halide photographic material | Kazunobu Katoh, Kimitaka Kameoka, Junji Miyata, Toshinao Ukai | 1990-03-13 |
| 4851321 | Superhigh contrast negative-type silver halide photographic material | Hisashi Okada, Morio Yagihara, Kazunobu Katoh | 1989-07-25 |
| 4734354 | Fluorescent brightener in image-receiving material for silver salt diffusion transfer process | — | 1988-03-29 |
| 4619893 | Light-sensitive material for silver salt diffusion transfer process with antihalation dye | Keiichi Adachi | 1986-10-28 |
| 4569900 | Image receiving material for silver salt diffusion transfer process | — | 1986-02-11 |
| 4540655 | Method of processing a direct positive silver halide photographic light-sensitive material | Shigeo Hirano, Tadao Sugimoto | 1985-09-10 |
| 4482627 | Method of treating direct positive silver halide sensitive material | Shigeo Hirano, Tadao Sugimoto | 1984-11-13 |
| 4481285 | Method of treating direct positive silver halide sensitive material | Shigeo Hirano, Tadao Sugimoto | 1984-11-06 |
| 4447522 | Method of forming a photographic image | Shigeo Hirano | 1984-05-08 |
| 4429036 | Method of forming a photographic image | Shigeo Hirano | 1984-01-31 |
| 4385108 | Method of forming negative dot images | Yoshitaka Akimura, Hiroyuki Mifune, Eiichi Okutsu | 1983-05-24 |
| 4358528 | Formation of black-and-white silver-containing negative images by a diffusion transfer process | Katsumi Hayashi | 1982-11-09 |
| 4309499 | Formation of black-and-white silver-containing negative images by a diffusion transfer process | Katsumi Hayashi | 1982-01-05 |
| 4298677 | Diffusion transfer photographic process | Masakado Sakai | 1981-11-03 |