Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1065313 | Wireless communication device | Koji Otsuka, Norihiko Wada | 2025-03-04 |
| 12225364 | Speaker device and control method thereof | Masato Ueno | 2025-02-11 |
| 10749484 | Load box and sound quality improving method | — | 2020-08-18 |
| D859360 | Speaker | Norihiko Wada | 2019-09-10 |