Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7902790 | Induction motor drive unit, motor drive system, and elevating system | Yoichiro Arakawa, Hiroyuki Tomita | 2011-03-08 |
| 7869232 | Electric power converter suppressing output voltage variation due to input voltage fluctuation | Toshiaki Okuyama, Shigetoshi Okamatsu, Koichi Miyazaki | 2011-01-11 |