Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8363527 | Disc apparatus | — | 2013-01-29 |
| 8053712 | Use of a photoelectric converted signal to inspect an objective lens driving device | Masaharu Sakazume, Yoshimaru Nakane, Hiroshi Yoshida, Shinya Tsukada | 2011-11-08 |
| 7969847 | Disc apparatus | — | 2011-06-28 |
| 7663988 | Optical disc apparatus and method of setting defocus value thereof | Tatsushi Arai | 2010-02-16 |