Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6967917 | Optical disk and optical disk apparatus using spatially separated grooves and lands for recording tracks | Tomiyuki Numata | 2005-11-22 |
| 6909677 | Optical disk, optical reproduction device, and optical recording device | Jun Akiyama | 2005-06-21 |