Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12249928 | Power converter, motor driver, and refrigeration cycle applied equipment | Keisuke Uemura, Haruka MATSUO, Koichi Arisawa, Takaaki TAKAHARA, Kenji Takahashi +1 more | 2025-03-11 |
| 12074511 | Direct current power supply device and air conditioner | Hiroki Suzuki, Keiichiro SHIZU | 2024-08-27 |
| 12027988 | Power conversion apparatus, refrigeration cycle apparatus, and air conditioner | Yohei Takigawa, Keiichiro SHIZU | 2024-07-02 |
| 11923776 | DC power supply device and air conditioner | Hiroki Suzuki, Keiichiro SHIZU | 2024-03-05 |
| 11804796 | Motor drive system and air conditioner | Shinji Sakai | 2023-10-31 |
| 11711039 | Motor drive apparatus | Kenji Takahashi, Shinya TOYODOME, Mitsuo Kashima | 2023-07-25 |
| 11705841 | Estimation device and AC motor drive device | Kenji Takahashi, Shinya TOYODOME, Mitsuo Kashima | 2023-07-18 |
| 11682992 | Motor drive device, compressor drive system, and refrigeration cycle system | Kenji Takahashi, Shinya TOYODOME, Mitsuo Kashima | 2023-06-20 |
| 11632067 | Speed estimating device for AC motor, driving device for AC motor, refrigerant compressor, and refrigeration cycle apparatus | Yuriko Takeda, Kenji Takahashi, Shinya TOYODOME, Mitsuo Kashima | 2023-04-18 |
| 11031895 | Motor drive system and air conditioner | Keiichiro SHIZU, Kazunori Hatakeyama, Takashi Yamakawa, Takayuki Kato | 2021-06-08 |
| 10734900 | Converter device, motor drive device, refrigerator, air conditioner, and heat-pump water heater | Akito Tanaka, Satoru Ichiki, Daisuke Suzuki, Akira Sakai | 2020-08-04 |
| 10696141 | Synchronous motor control device and method of controlling synchronous motor | Mitsuo Kashima, Tomomi Higashikawa, Akiyoshi Muramatsu | 2020-06-30 |
| 10693377 | Converter device | Akira Sakai, Daisuke Suzuki, Satoru Ichiki, Akito Tanaka | 2020-06-23 |
| 10476423 | Synchronous motor control device, compressor drive system, and air conditioner | Mitsuo Kashima, Tomomi Higashikawa, Akiyoshi Muramatsu | 2019-11-12 |