Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6937544 | Optical disk unit for recording or reproducing information | Shintaro Takehara, Katsuo Iwata, Sumitaka Maruyama | 2005-08-30 |
| 6925046 | Optical head device and optical disk unit capable of stable signal reproduction | Katsuo Iwata, Shintaro Takehara, Sumitaka Maruyama | 2005-08-02 |