Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5608707 | Recording system for signalong disc player | Masaya Ogawa, Shinichi Takata | 1997-03-04 |
| 5237426 | Record regenerative method and regenerative apparatus | — | 1993-08-17 |
| 5084904 | Signal transmission device | — | 1992-01-28 |
| 4920424 | Method of recording and reproducing multi-channel information on and from recording medium | Sumio Hosaka, Toshiyuki Amaya, Hiroshi Itoh, Takumi Jinguji | 1990-04-24 |