Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11098928 | Speed estimation apparatus for AC motor, driving apparatus for AC motor, refrigerant compressor, and refrigeration cycle apparatus | Kenji Takahashi, Koichi Arisawa | 2021-08-24 |
| 11070157 | Motor drive unit, compressor, and air conditioner | Keiichiro SHIZU, Kazunori Hatakeyama | 2021-07-20 |
| 11031896 | Motor driving apparatus and refrigeration cycle equipment | Kazunori Hatakeyama, Keiichiro SHIZU | 2021-06-08 |