Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8029976 | Optical recording medium and optical recording-reproducing method using thereof | Yutaka Wada, Masatsugu Suwabe, Toru Yano, Keiji Oya, Koichi Shigeno | 2011-10-04 |
| 7316836 | Optical recording medium | Yutaka Wada, Masatsugu Suwabe, Toshihiro Akimori, Keiji Oya, Koichi Shigeno +1 more | 2008-01-08 |