Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6664998 | Compound optical device, compound optical unit including the compound optical device, and optical pickup apparatus including the compound optical unit | Tatsumaro Yamashita | 2003-12-16 |
| 6621771 | Disk drive with an objective lens disposed in an optical head moving along a transfer line not intersecting the center of rotation of a disk | Kenji Furuta, Tatsumaro Yamashita | 2003-09-16 |
| 6560188 | Compound optical unit mounted on optical device | Tatsumaro Yamashita | 2003-05-06 |