Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9712079 | Electric power converter and control method for electric power converter | Sadao Ishii, Tsuyoshi Higuchi, Takashi Kuboyama, Yutaro Ihara | 2017-07-18 |
| 9136774 | Power converting apparatus | — | 2015-09-15 |
| 9036387 | Alternating-current/direct-current converter | Hidenori Hara, Yushi Takatsuka | 2015-05-19 |
| 9001542 | Current-source power converting apparatus | Yushi Takatsuka | 2015-04-07 |
| 8964428 | Power conversion device | — | 2015-02-24 |
| 8947897 | Current-source power converting apparatus | — | 2015-02-03 |
| 8830707 | Power converter | — | 2014-09-09 |
| 8773876 | Three-level inverter, power conditioner, and power generating system | Takashi Kuboyama | 2014-07-08 |
| 8508961 | Power conversion apparatus | — | 2013-08-13 |
| 8384317 | Linear motor device | Toru Shikayama | 2013-02-26 |
| 8269450 | Winding switching apparatus and winding switching system | Koji Higashikawa, Kenji Yamada | 2012-09-18 |
| 8183817 | Apparatus for switching windings of AC three-phase motor | Koji Higashikawa, Kenji Yamada | 2012-05-22 |
| 8080958 | Power conversion device | — | 2011-12-20 |
| 7701740 | Apparatus for three phase PWM cycloconverter | — | 2010-04-20 |
| 7068526 | PWM inverter device | Jun-Koo Kang, Shinya Morimoto | 2006-06-27 |
| 7042741 | PWM inverter control method | Yoshiyuki Tanaka, Eiji Watanabe | 2006-05-09 |
| 7031172 | PMW inverter control apparatus and control method | Yoshiyuki Tanaka, Eiji Watanabe | 2006-04-18 |
| 7016207 | Power inverter | Noritaka Koga, Michihiko Zenke | 2006-03-21 |
| 6795323 | Three-level neutral point clamping pwn inverter and neutral point voltage controller | Yoshiyuki Tanaka, Eiji Watanabe | 2004-09-21 |
| 6751105 | Method for controlling pwm pulse | Eiji Watanabe, Takaaki Terada, Yoshiyuki Tanaka, Yuuichi Terazono | 2004-06-15 |
| 6490185 | Method for controlling neutral point potential of inverter of neutral point clamping type | Akira Kumagai, Kenji Yamada | 2002-12-03 |
| 6226192 | Three-level neutral point clamping type inverter circuit | Kenji Yamada, Akira Kumagae, Takaaki Terada | 2001-05-01 |
| 6058032 | Multiplex pulse-width modulation power converter | Toshihiro Sawa, Eijiro Tajima | 2000-05-02 |