Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5034934 | Opto-magnetic disk unit with improved dynamic range characteristics and opto-magnetic disk therefor | Ryuichi Naito, Yoshihiro Utsumi | 1991-07-23 |
| 5022022 | Support structure for an optical pickup electrically adjustable in two directions | Ryo Sato | 1991-06-04 |
| 5007712 | Optical pick-up unit | Ryo Sato | 1991-04-16 |
| 4901303 | Photo-electro-magnetic disc device | — | 1990-02-13 |
| 4596448 | Optical system support and positioning device for use in an optical reading apparatus | — | 1986-06-24 |