Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11076233 | Sound generation device | Hiroyuki Dohi, Koji Takayama, Hiroyuki Kobayashi | 2021-07-27 |
| 11070908 | Sound generator for mobile entities | Hiroyuki Dohi, Takayuki NEGISHI, Hiroyuki Kobayashi | 2021-07-20 |