Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7903518 | Optical recording method and optical recording device | Tomo Kishigami, Osamu Tsukahara | 2011-03-08 |
| 7864646 | Optical recording medium, optical recording device, and optical recording and reproducing device | Osamu Tsukahara, Tomo Kishigami | 2011-01-04 |