Issued Patents 2018
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10142736 | Electroacoustic transducer | — | 2018-11-27 |
| 10038416 | Self-oscillating class D amplifier | Takeshi Togawa | 2018-07-31 |
| D808932 | Speaker diaphragm | Soichi Takigawa, Kenichi Yoshinaga, Akihiko Nozaki | 2018-01-30 |
| D808933 | Speaker diaphragm | Soichi Takigawa, Kenichi Yoshinaga, Akihiko Nozaki | 2018-01-30 |