Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879204 | Silver halide photographic element containing anhydazine compound and specific dyes | Kunio Ishigaki, Toshiro Takahashi, Keiichi Adachi, Shigeru Ohno, Masahiro Okada +1 more | 1989-11-07 |
| 4839265 | Silver halide photosensitive material containing an infrared absorption dye | Shigeru Ohno, Keiichi Adachi | 1989-06-13 |
| 4820625 | Direct positive silver halide photographic material | Naomi Saeki, Nobuaki Inoue, Toshinao Ukai | 1989-04-11 |
| 4801525 | Infrared sensitized silver halide light-sensitive element with mordant dye over layer | Kunio Ishigaki | 1989-01-31 |