Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5090000 | Height adjusting device for a pickup | Tetsuo Shimizu, Seiji Ohmori | 1992-02-18 |
| 4841518 | Clamping mechanism for information recording disk | Masao Kase, Masakazu Yamashita | 1989-06-20 |
| 4663750 | Focus error detection device for an optical recording/playing back system | Kenjiro Hamanaka, Katsuharu Sato, Hozumi Tanaka | 1987-05-05 |
| 4658391 | Focus error detection device for an optical recording/playing back system | Katsuharu Sato, Hozumi Tanaka, Kenjiro Hamanaka | 1987-04-14 |