Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6096490 | Silver halide light sensitive color photographic material and process for preparing color proof | Yasuo Tosaka | 2000-08-01 |
| 5541040 | Positive type color light sensitive material and the image forming process therefor | Susumu Okawauchi, Yasuo Tosaka, Keiichi Hoshino | 1996-07-30 |
| 5480767 | Silver halide color photographic light-sensitive material and image-forming process | Yasuo Tosaka, Keiichi Hoshino | 1996-01-02 |
| 5475103 | Process for the production of halogenated phthalocyanine | — | 1995-12-12 |
| 5436116 | Silver halide color photographic photosensitive material and color proof preparation process | Keiichi Hoshino, Susumu Ohkawachi, Yasuo Tosaka | 1995-07-25 |
| 5436117 | Positive type silver halide color photographic light-sensitive material for color proofing use | Keiichi Hoshino, Susumu Ohkawauchi, Yasuo Tosaka | 1995-07-25 |
| 5428153 | Process for the production of halogenated phthalocyanine | — | 1995-06-27 |
| 5286855 | Process for producing polyhalogenated phthalocyanine | Junichi Tsuchida, Masami Shirao, Michichika Hikosaka | 1994-02-15 |
| 5282896 | Process for producing phthalocyanine pigment composition containing highly halogenated different-metalo-phthalocyanine | Junichi Tsuchida, Masami Shirao, Michichika Hikosaka | 1994-02-01 |
| 5223027 | Polyhalogenated phthalocyanine, process for the production thereof, and use thereof | Junichi Tsuchida, Masami Shirao, Michichika Hikosaka | 1993-06-29 |
| 5015563 | Silver halide light-sensitive color photographic material suitable for rapid processing comprising a mercapto or an azaindene compound | Yukio Ohya | 1991-05-14 |
| 4948884 | Process for the halogenation of copper phthalocyanine | Junichi Tsuchida, Masami Shirao, Toshiro Notoji, Michichika Hikosaka | 1990-08-14 |
| 4943518 | Direct-positive silver halide photographic light-sensitive material and method of processing it | Tomomi Yoshizawa, Keiji Ogi, Yasuo Tosaka, Kazuya Kuramoto | 1990-07-24 |
| 4894322 | Light-sensitive silver halide color photographic material | Shigeto Hirabayashi, Syoji Matsuzaka, Yukio Ohya | 1990-01-16 |
| 4710453 | Silver halide color photographic material | Shigeto Hirabayashi, Syoji Matsuzaka, Yukio Ohya | 1987-12-01 |
| 4565778 | Silver halide photographic materials | Akihiko Miyamoto, Hideki Takiguchi, Shoji Matsuzaka, Hiroshi Kashiwagi | 1986-01-21 |