Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10770549 | Semiconductor device, inverter circuit, driving device, vehicle, and elevator | Toshiyuki Oshima, Ryosuke Iijima, Tatsuo Shimizu | 2020-09-08 |
| 10763354 | Semiconductor device, inverter circuit, driving device, vehicle, and elevator | Katsuhisa Tanaka, Ryosuke Iijima | 2020-09-01 |
| 10600863 | Semiconductor device and method for manufacturing the same | Ryosuke Iijima | 2020-03-24 |