Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6392907 | NPC inverter control system | — | 2002-05-21 |
| 6285235 | Gate control circuit for voltage drive switching element | Tateo Koyama, Hitoshi Matsumura, Shinji Sato | 2001-09-04 |
| 6272028 | Power converter apparatus | Kazuhiro Satoh, Ryo Nakajima | 2001-08-07 |
| 6229722 | Multiple inverter system | Akio Hirata, Kazuto Kawakami, Kazuhiro Satoh | 2001-05-08 |
| 5929665 | Power converter with voltage drive switching device monitored by device parameters and electric parameters | Akio Hirata, Kazuto Kawakami, Kazuhiro Satoh | 1999-07-27 |
| 5790396 | Neutral point clamped (NPC) inverter control system | Satoshi Miyazaki, Shinji Tatara | 1998-08-04 |
| 4675800 | Power converter with a failure detector of a self-turn-off semiconductor element | Nagataka Seki | 1987-06-23 |