Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11121637 | Power conversion device and power conversion system including a power converter capable of converting between alternating-current (AC) power and direct-current (DC) power | Takeshi Kikuchi, Toshiyuki Fujii | 2021-09-14 |
| 11031882 | Modular multilevel converter having capacitor degradation determination | Kazuyori TAHATA, Yoshiyuki Kono, Kenichi Kuroda, Shuhei Fujiwara | 2021-06-08 |