Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5075197 | Diffusion transfer photographic elements | Yukio Karino | 1991-12-24 |
| 5023162 | Photographic element | Kentaro Shiratsuchi, Yukio Karino, Takeshi Shibata | 1991-06-11 |
| 4965180 | Silver halide photographic material | Koichi Suematsu, Sumito Yamada, Tomokazu Yasuda, Yasuo Mukunoki | 1990-10-23 |
| 4954419 | Diffusion transfer photographic film unit | Yukio Shinagawa, Toru Oikawa, Kentaro Shiratsuchi | 1990-09-04 |
| 4948711 | Method for processing silver halide photographic light-sensitive materials | Tetsuro Kojima, Yoshihiro Fujita, Tomokazu Yasuda | 1990-08-14 |
| 4916047 | Silver halide light-sensitive material | Keizo Koya, Masaharu Toriuchi, Yoshisada Nakamura | 1990-04-10 |
| 4874689 | Silver halide color photographic material | Shigetoshi Ono, Tsumoru Hirano, Toshiyuki Watanabe, Nobuo Sakai, Keiji Mihayashi | 1989-10-17 |
| 4861852 | Polymer mordant | Masaharu Toriuchi | 1989-08-29 |
| 4839269 | Light-responsive material containing a dye comprising two cyclodextrin groups | Masaki Okazaki | 1989-06-13 |
| 4728595 | Photographic element | Hiroshi Hayashi, Masaharu Toriuchi, Junichi Matsuyama | 1988-03-01 |
| 4722885 | Photographic light-sensitive material containing a specified graft polymer or copolymer | Shigeki Yokoyama, Masakazu Yoneyama, Yukio Maekawa | 1988-02-02 |
| 4721666 | Photographic element | Masaharu Toriuchi | 1988-01-26 |
| 4623614 | Silver halide photographic light-sensitive materials | Masakazu Yoneyama, Yukio Maekawa, Shigeki Yokoyama | 1986-11-18 |
| 4622288 | Photographic light-sensitive material having improved antistaticity | Shigeki Yokoyama, Masakazu Yoneyama, Yukio Maekawa | 1986-11-11 |
| 4596756 | Copolymer mordant for photographic dyes and photographic element containing the same | Yukio Sudo | 1986-06-24 |