Issued Patents 2020
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10692474 | Key unit and keyboard instrument | Toshiya Kuno, Yuichi Nishimura | 2020-06-23 |
| 10593306 | Keyboard instrument | Akihito Akaishi, Akihisa Hoshino | 2020-03-17 |
| 10580390 | Keyboard instrument | Akihito Akaishi | 2020-03-03 |