Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853313 | Printing plate | Shigeo Abiko, Mikio Tsuda, Chikara Ichijo | 1989-08-01 |
| 4347303 | Dry planographic printing plate with organic acid additive | Masaya Asano, Yoshiaki Takayama | 1982-08-31 |

