Issued Patents All Time
Showing 51–75 of 81 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5925493 | Development processing method of silver halide photographic material and image forming method | Kouta Fukui, Kazunobu Katoh | 1999-07-20 |
| 5869218 | Image formation process | Kazunobu Katoh | 1999-02-09 |
| 5780198 | Silver halide photographic material | Takahiro Goto, Kazunobu Katoh | 1998-07-14 |
| 5744279 | Silver halide photographic material | Toshihide Ezoe, Toshiaki Kubo, Hiroshi Takeuchi, Kazunobu Katoh, Shigeo Hirano +3 more | 1998-04-28 |
| 5688630 | Silver halide photographic material | Kohzaburoh Yamada, Hiroshi Takeuchi, Takashi Hoshimiya, Toshihide Ezoe, Shigeo Hirano | 1997-11-18 |
| 5480886 | Silver halide photographic material | Kazuki Yamazaki, Nobuaki Inoue, Seiichi Yamamoto, Toshihide Ezoe, Tadashi Ikeda +2 more | 1996-01-02 |
| 5478697 | Method for forming an image | Kazunobu Katoh, Hisashi Okamura | 1995-12-26 |
| 5447835 | Silver halide photographic material containing hydrazine compounds | Kazunobu Katoh, Hisashi Okamura, Kazumi Nii | 1995-09-05 |
| 5382496 | Silver halide light-sensitive material and a method for forming image using the same | Kazunobu Katoh, Kiyoshi Morimoto | 1995-01-17 |
| 5316889 | Silver halide photographic material and photographic image forming method using the same | — | 1994-05-31 |
| 5286598 | Silver halide photographic material | Nobuaki Inoue, Shigeru Ohno, Hisashi Okamura | 1994-02-15 |
| 5273864 | Processing method for silver halide color photographic material | Takatoshi Ishikawa, Nobuo Sakai | 1993-12-28 |
| 5190850 | Silver halide photographic material | Kazunobu Katoh | 1993-03-02 |
| 5124231 | Silver halide photographic material | Kazunobu Katoh | 1992-06-23 |
| 5011764 | Silver halide color photographic material which forms a color photographic image with improved preservability | Nobuo Sakai | 1991-04-30 |
| 5006453 | Silver halide color photographic material having improved dye image stability | Osamu Takahashi, Genichi Furusawa, Tsumoru Hirano | 1991-04-09 |
| 4985338 | Silver halide photographic material | Kazunobu Katoh, Jiro Yamaguchi, Hisashi Okada, Tomokazu Yasuda, Masaki Satake | 1991-01-15 |
| 4945031 | Image-forming process comprising bleaching at low pH a material comprising a cyan coupler and hydroquinone | Osamu Takahashi, Kozo Aoki | 1990-07-31 |
| 4904575 | Silver halide color photographic material with heterocylic fused phenol coupler | Michio Ono, Kozo Aoki | 1990-02-27 |
| 4865963 | Silver halide color photographic materials containing novel magenta coupler | Nobuo Furutachi, Tadahisa Sato, Seiki Sakanoue, Akio Mitsui, Masakazu Morigaki +5 more | 1989-09-12 |
| 4865957 | Color photographic light-sensitive material comprising a combination of cyan couplers and UV absorbers | Keiichi Adachi | 1989-09-12 |
| 4818675 | Silver halide photographic light sensitive material with improved silver blackness of picture image | Nobuaki Miyasaka, Hideo Ikeda, Shigeru Ohno, Yasuo Mukunoki | 1989-04-04 |
| 4797349 | Method for forming a color image comprising developing a light sensitive material containing a surfactant with a developer not containing benzyl alcohol | Osamu Takahashi, Tadashi Ogawa, Masaharu Toriuchi | 1989-01-10 |
| 4770988 | Silver halide color photographic material with combination of phenolic couplets | Kozo Aoki | 1988-09-13 |
| 4761365 | Photographic light-sensitive materials containing specific magenta dyes to control photographic sensitivity | Mitsugu Tanaka | 1988-08-02 |