Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6798723 | Optical pickup head and information recording/reproducing device | Hideki Hayashi, Sadao Mizuno, Shin-ichi Kadowaki, Kousei Sano, Jouji Anzai +1 more | 2004-09-28 |
| 6781945 | Optical head and optical disc apparatus for focusing a collimated laser beam | — | 2004-08-24 |