Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12015354 | Power conversion device capable of suppressing a harmonic component in an output voltage from an arm that increases after bypass of a failed converter cell | Takuya Kajiyama, Toshiyuki Fujii, Shuhei Fujiwara, Ryosuke Uda | 2024-06-18 |
| 11909307 | Power conversion device | Shuhei Fujiwara, Takuya Kajiyama, Toshiyuki Fujii | 2024-02-20 |
| 11750080 | Power conversion device | Takuya Kajiyama, Toshiyuki Fujii, Shuhei Fujiwara, Ryosuke Uda | 2023-09-05 |
| 11722069 | Power conversion system | Fuminori Nakamura, Shigeo Hayashi | 2023-08-08 |
| 11336169 | Power conversion device | Takuya Kajiyama, Toshiyuki Fujii, Shuhei Fujiwara, Ryosuke Uda | 2022-05-17 |
| 11283369 | Control device and power control system | Shuhei Fujiwara, Yoshiyuki Kono, Masashi Shigemitsu, Shota Midorikawa | 2022-03-22 |
| 11031882 | Modular multilevel converter having capacitor degradation determination | Yoshiyuki Kono, Kenichi Kuroda, Shuhei Fujiwara, Ryosuke Uda | 2021-06-08 |
| 10403449 | Direct-current circuit breaker | Shiken Ka, Hiroki Ito, Kunio Kikuchi, Makoto Miyashita, Sho Tokoyoda +1 more | 2019-09-03 |
| 10184452 | Wind power generation system and DC power transmission system | Kunio Kikuchi, Makoto Miyashita, Kenji Kamei, Sho Tokoyoda | 2019-01-22 |
| 9800171 | Protection system for DC power transmission system, AC-DC converter, and method of interrupting DC power transmission system | Hiroki Ito, Kunio Kikuchi, Makoto Miyashita, Kenji Kamei | 2017-10-24 |
| 9413157 | Direct-current circuit breaker | Hiroki Ito, Kunio Kikuchi, Kenji Kamei, Yusaku Horinouchi, Masaki Hiratsuka +2 more | 2016-08-09 |