Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6577564 | Optical pickup device | Tadashi Takeda, Hisahiro Ishihara, Taminori Masuzawa, Yuichi Takei | 2003-06-10 |
| 6552317 | Optical pickup device | Tadashi Takeda, Yuichi Takei | 2003-04-22 |