Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11172307 | Speaker | Takahiro Kubota, Yasunari Takabatake, Kazuyuki Inagaki | 2021-11-09 |
| 11134338 | Speaker, speaker system, stereo speaker system, and on-vehicle stereo speaker system | Kazuyuki Inagaki | 2021-09-28 |