Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6834030 | Optical disk apparatus | Takeharu Yamamoto, Kenji Fujiune, Katsuya Watanabe | 2004-12-21 |
| 6721239 | Optical disc device | Yuu Okada, Katsuya Watanabe | 2004-04-13 |
| 6714493 | Optical disk apparatus | Takeharu Yamamoto, Kenji Fujiune, Katsuya Watanabe | 2004-03-30 |