Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6980505 | Optical head apparatus including two light sources and one photodetector | Eiichi Ueda, Taku Tsuboi | 2005-12-27 |
| 6963522 | Optical head apparatus and optical information recording and reproducing apparatus | — | 2005-11-08 |
| 6894958 | Optical system for detecting data signal and tracking error signal | — | 2005-05-17 |