Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6577565 | Optical pickup for performing recording or reading operation on recording medium having prepits | Masayoshi Yoshida, Yoshitaka Shimoda | 2003-06-10 |
| 6577581 | Variable recording layer disk image pickup device | — | 2003-06-10 |
| 6567354 | Optical pickup device minimizing an undesirable astigmatism | — | 2003-05-20 |