Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6646817 | Objective lens for optical recording media and optical pickup apparatus using the same | — | 2003-11-11 |
| 6552851 | Achromatic beam shaping prism | — | 2003-04-22 |
| 6545821 | Diffraction type lens and optical pickup apparatus using the same | — | 2003-04-08 |
| 6542314 | Objective lens for optical recording media and optical pickup apparatus using the same | Masato Kawabata | 2003-04-01 |