Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8179770 | Optical pickup apparatus | Tohru Hotta, Ryoichi Kawasaki | 2012-05-15 |
| 7956312 | Optical disc device | Kiyoshi Hibino | 2011-06-07 |
| 7820959 | Photodetector including enhanced light receiving portion | Ryoichi Kawasaki | 2010-10-26 |