Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871658 | Silver halide photographic material that is resistant to fogging during storage | Eiichi Sakamoto, Yutaka Kaneko, Takashi Kamio, Atsuo Ezaki, Hideo Akamatsu +1 more | 1989-10-03 |
| 4840883 | Light-sensitive silver halide color photographic material containing novel cyan coupler | Toyoaki Masukawa, Hiroyuki Iizuka | 1989-06-20 |
| 4818672 | Silver halide color photographic light-sensitive material improved in cyan image characteristics | Toyoaki Masukawa, Yasuo Tsuda, Noritaka Nakayama, Toshihiko Kimura | 1989-04-04 |