Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885228 | Optical information recording medium | Yoshio Inagaki, Keiichi Adachi | 1989-12-05 |
| 4851322 | Optical recording medium | Yoshio Inagaki, Takanori Hioki, Naonori Makino, Keiichi Adachi | 1989-07-25 |
| 4801524 | Process for preparing silver halide emulsion and photographic light-sensitive material containing said emulsion | Hiroyuki Mifune, Tadao Shishido | 1989-01-31 |