Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9846190 | Motor drive device including function to detect failure in insulation resistance deterioration detection unit of motor, and failure detection method | Hiroyasu Sato, Akira Hirai | 2017-12-19 |
| 9762171 | Motor drive device having insulation resistance detecting function and method of detecting insulation resistance of motors | Hiroyasu Sato, Akira Hirai | 2017-09-12 |
| 9716461 | Motor drive having function of detecting circuit abnormality owing to entering foreign matter before significant abnormality occurs | Akira Hirai, Kiichi Inaba | 2017-07-25 |