Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6545958 | Optical-pickup device and tilt-detecting method thereof | Hideaki Hirai, Hiroshi Akiyama | 2003-04-08 |
| 6507713 | Image-formation apparatus, controlling method thereof and image-formation method | — | 2003-01-14 |