Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6377520 | Robust and versatile focus/tracking method and system for optical pickup heads | Jinn-Kang Wang, Hsi-Fu Shih | 2002-04-23 |
| 6369377 | Multiple-beam holographic optical pick-up head | Hsi-Fu Shih, Jau-Jiu Ju, Tzu-Ping Yang, Wei Lu, Der-Ray Huang +1 more | 2002-04-09 |
| 6351443 | Diffractive stack pickup head for optical disk drives and method to fabricate the pickup head | — | 2002-02-26 |