Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6643310 | Semiconductor laser apparatus, laser coupler, data reproduction apparatus, data recording apparatus and production method of semiconductor laser apparatus | — | 2003-11-04 |
| 6621775 | Optical head, optical recording and/or reproducing apparatus, and tracking error signal detecting method | — | 2003-09-16 |