Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10355620 | Conversion device | Naoki Ayai, Toshiaki Okumura, Tetsuo Akita | 2019-07-16 |
| 10277036 | Inverter device | Naoki Ayai, Toshiaki Okumura | 2019-04-30 |
| 9882508 | High-frequency switching type conversion device | Naoki Ayai, Tetsuo Akita, Toshiaki Okumura | 2018-01-30 |
| 9627995 | Inverter device with a control unit | Naoki Ayai, Toshiaki Okumura | 2017-04-18 |