Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6552990 | Optical head for two different disk thicknesses with a light beam diameter control device | Seiji Kajiyama, Yoichi Tsuchiya, Masato Yamada, Yasuyuki Kanou | 2003-04-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6552990 | Optical head for two different disk thicknesses with a light beam diameter control device | Seiji Kajiyama, Yoichi Tsuchiya, Masato Yamada, Yasuyuki Kanou | 2003-04-22 |