Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6614820 | Semiconductor laser driving method and optical disc apparatus | Shoji Hirata | 2003-09-02 |
| 6580737 | Semiconductor laser driving method and optical disc apparatus | Shoji Hirata | 2003-06-17 |
| 6567440 | Semiconductor laser driving method and optical disc apparatus | Shoji Hirata | 2003-05-20 |