Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5872753 | Optical disk driving apparatus with tracking control | — | 1999-02-16 |
| 4660189 | Optical disk player having reduced laser output during track changes | Yoshihiro Tsukamura, Matayasu Kubo, Masataka Mukai | 1987-04-21 |