Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9979277 | PWM control device and three-level power conversion device using PWM control device | — | 2018-05-22 |
| 7919887 | High repetitous pulse generation and energy recovery system | Ryuichi Shimada | 2011-04-05 |
| 7898113 | Pulse power supply device | Ryuichi Shimada | 2011-03-01 |
| 7843166 | Alternating-current power supply device recovering magnetic energy | Ryuichi Shimada, Hideo Sumitani, Takanori Isobe | 2010-11-30 |