Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819636 | Optical disc device | Yasuhito Soma | 2004-11-16 |
| 6721246 | Optical disk apparatus having compensation for objective lens dislocation | Yasuhito Soma, Akira Matsubara | 2004-04-13 |