Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11172307 | Speaker | Takahiro Kubota, Yasunari Takabatake, Yuji Negishi | 2021-11-09 |
| 11134338 | Speaker, speaker system, stereo speaker system, and on-vehicle stereo speaker system | Yuji Negishi | 2021-09-28 |