Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10756666 | Electric-motor driving apparatus, electric motor system and refrigeration cycle apparatus | Koichi Arisawa, Shigeo Umehara | 2020-08-25 |
| 10686397 | Motor system, motor drive device, refrigeration cycle device, and air conditioner | Shigeo Umehara, Koichi Arisawa, Yosuke Shinomoto, Takashi Yamakawa | 2020-06-16 |