Issued Patents 2017
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9793868 | Digital acoustic system | Akira Yasuda | 2017-10-17 |
| 9735796 | Selection device | Akira Yasuda | 2017-08-15 |
| 9693136 | Digital speaker driving apparatus | Akira Yasuda | 2017-06-27 |
| 9641931 | Drive circuit | Akira Yasuda | 2017-05-02 |
| 9628928 | Speaker control device | Akira Yasuda | 2017-04-18 |
| 9544691 | Acoustic playback system | Akira Yasuda | 2017-01-10 |