Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819491 | Objective lens unit for optical pickup, optical pickup and disc driving device | Toyokazu Takahashi | 2004-11-16 |
| 6795254 | Objective lens for optical pickup and optical pickup employing this objective lens | — | 2004-09-21 |