Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5198324 | Method for making lithographic printing plate | Shigeru Iguchi, Koichi Torizuka, Shozi Oka | 1993-03-30 |
| 4693955 | Negative type lithographic printing plate | Koichi Torizuka | 1987-09-15 |
| 4420554 | Silver halide photosensitive materials | Minoru Ohashi, Katsuaki Iwaosa | 1983-12-13 |
| 4416977 | Silver halide photographic photosensitive material | Minoru Ohashi, Katsuaki Iwaosa | 1983-11-22 |
| 4387149 | Electrophotographic sensitive material having a dye sensitizer containing a carbonium atom | Kazuhiro Emoto | 1983-06-07 |