Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6529455 | Disk apparatus with enhanced focal positioning | Tadashi Okajima, Toshihide Hamaguchi | 2003-03-04 |
| 6522605 | Disk apparatus for focusing and adjusting a laser beam | Takashi Onaka | 2003-02-18 |