Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7924676 | Multilayer information recording medium, information recorder, and information reproducer | Tetsuya Ogata | 2011-04-12 |
| 7885155 | Data readout method, data readout device, and optical disk | Ryosuke Kasahara | 2011-02-08 |