Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876183 | Tubular silver halide photosensitive materials sensitized with a luminous dye | Masaki Okazaki, Tadao Sugimoto | 1989-10-24 |
| 4820606 | Silver halide photographic material | Masaki Okazaki, Tadao Sugimoto | 1989-04-11 |