Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10255941 | Optical disc having a plurality of recording layers | Yoshihiro Takatani, Masayoshi Tsuchiya | 2019-04-09 |
| 9928868 | Optical disc having a plurality of recording layers | Yoshihiro Takatani, Masayoshi Tsuchiya | 2018-03-27 |