Issued Patents All Time
Showing 26–50 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4774166 | Method for the formation of color images using a color developer not substantially containing benzyl alcohol | Minoru Sasaki, Tadahisa Sato, Takeshi Hirose | 1988-09-27 |
| 4774172 | Silver halide color photographic materials | Toshio Kawagishi, Takayoshi Kamio, Keizo Kimura, Tadahisa Sato | 1988-09-27 |
| 4705863 | Process for producing pyrazolo[1,5-b][1,2,4]triazole derivatives | Tadahisa Sato, Toshio Kawagishi | 1987-11-10 |
| 4696893 | Color photographic material containing certain combinations of cyan and magenta couplers | Makoto Umemoto, Kotaro Nakamura | 1987-09-29 |
| 4621046 | Pyrazolo(1,5-B)-1,2,4-triazole derivatives | Tadahisa Sato, Toshio Kawagishi | 1986-11-04 |
| H131 | Silver halide color photographic material | Tadahisa Sato, Toshio Kawagishi, Kiyoshi Nakazyo | 1986-09-02 |
| 4595650 | Color photographic light-sensitive material | Masakazu Morigaki, Takeshi Hirose | 1986-06-17 |
| 4594313 | Color image forming process comprising blocked magenta dye forming coupler | Yoshinobu Yoshida | 1986-06-10 |
| 4590153 | Silver halide color photographic materials | Toshio Kawagishi | 1986-05-20 |
| 4588679 | Color photographic silver halide light-sensitive material | — | 1986-05-13 |
| 4585732 | Silver halide photographic light-sensitive material | Toshio Kawagishi | 1986-04-29 |
| 4585728 | Color photographic light-sensitive material | Takeshi Hirose | 1986-04-29 |
| 4584266 | Color photographic light-sensitive material | Takeshi Hirose, Kotaro Nakamura | 1986-04-22 |
| 4576910 | Silver halide color light-sensitive material containing magenta color image-forming polymer or copolymer coupler latex | Tsumoru Hirano | 1986-03-18 |
| 4559297 | Silver halide color photographic light-sensitive material containing stabilizer | Nobuo Seto, Masakazu Morigaki, Kiyoshi Nakazyo | 1985-12-17 |
| 4556630 | Color photographic light-sensitive material | Kotaro Nakamura, Takeshi Hirose | 1985-12-03 |
| 4540654 | Method of forming color image comprising heterocyclic magenta dye-forming coupler | Tadahisa Sato, Toshio Kawagishi | 1985-09-10 |
| 4530899 | Color photographic materials with phenol or naphthol ring compound having sulfoamido group | Nobutaka Ohki, Yoshinobu Yoshida | 1985-07-23 |
| 4513082 | Silver halide color photographic light-sensitive materials | Takeshi Hirose | 1985-04-23 |
| 4503141 | Silver halide color photographic light-sensitive materials containing couplers with a hydroxyl substituted aromatic heterocyclic sulfonyl group in the ballast group | Takeshi Hirose | 1985-03-05 |
| 4500630 | Method for forming magenta color image | Tadahisa Sato, Toshio Kawagishi | 1985-02-19 |
| 4483918 | Color photographic light-sensitive material | Nobuo Sakai, Yoshimasa Aotani, Yoshiharu Yabuki | 1984-11-20 |
| 4407936 | Process and material for forming color photographic image | Seiji Ichijima, Toshiyuki Watanabe, Nobuo Seto | 1983-10-04 |
| 4385111 | Color photographic sensitive materials | Kotaro Nakamura, Takayoshi Kamio | 1983-05-24 |
| 4351897 | Color photographic light-sensitive material | Kozo Aoki, Nobuo Seto, Yoshiharu Yabuki, Masakazu Morigaki, Kotaro Nakamura | 1982-09-28 |