Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4734904 | Reproducing-only and recordable-reproduceable optical discs and common optical disc player therefor | Ryoichi Imanaka, Tetsuo Saimi | 1988-03-29 |
| 4472124 | Device for producing an information recording disk | Toshiaki Kashihara, Keisuke Ito | 1984-09-18 |
| 4449916 | Device for manufacturing information recording mediums | Keisuke Ito, Toshiaki Kashihara | 1984-05-22 |