Issued Patents 2017
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9832555 | Audio reproduction device | Satoshi Akagawa, Hiroshi Sato | 2017-11-28 |
| 9769908 | Audio reproduction device | Arinobu Ueda | 2017-09-19 |
| 9674928 | Reproduction device and reproduction method | — | 2017-06-06 |