Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847180 | Silver halide photographic material capable of being handled in a bright room during steps of photomechanical process | Junji Miyata, Toshiro Takahashi, Yoshio Inagaki, Shigeo Hirano | 1989-07-11 |
| 4818659 | Silver halide photographic materials for photochemical process which can be used in a bright room | Toshiro Takahashi, Kimitaka Kameoka, Masahiro Okada | 1989-04-04 |
| 4803149 | Silver halide photographic materials | Toshiro Takahashi, Masahiro Okada | 1989-02-07 |