Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847186 | Silver halide photographic light-sensitive materials | Yukio Maekawa | 1989-07-11 |
| 4818675 | Silver halide photographic light sensitive material with improved silver blackness of picture image | Nobuaki Miyasaka, Hideo Ikeda, Minoru Sakai, Shigeru Ohno | 1989-04-04 |