Issued Patents 2017
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9793868 | Digital acoustic system | Jun-ichi Okamura | 2017-10-17 |
| 9735796 | Selection device | Jun-ichi Okamura | 2017-08-15 |
| 9693136 | Digital speaker driving apparatus | Jun-ichi Okamura | 2017-06-27 |
| 9681231 | Digital/analog conversion apparatus | Junichi Okamura | 2017-06-13 |
| 9641931 | Drive circuit | Jun-ichi Okamura | 2017-05-02 |
| 9628928 | Speaker control device | Jun-ichi Okamura | 2017-04-18 |
| 9544691 | Acoustic playback system | Jun-ichi Okamura | 2017-01-10 |