Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9800976 | Electroacoustic transducer | Kenzo Tsuihiji, Koichiro Tanoue, Kenji Arai | 2017-10-24 |
| 9794682 | Electroacoustic transducer and acoustic resistor | Kenzo Tsuihiji, Koichiro Tanoue, Kenji Arai | 2017-10-17 |
| 9609422 | Headphone unit and ear muff unit | Kenzo Tsuihiji, Koichiro Tanoue, Kenji Arai | 2017-03-28 |