Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8963456 | Power converter and power converter of rolling stock | Tetsu SUGIURA, Motomi Shimada, Ryoichi Oishi, Tadanori Sato, Toshio Sekine | 2015-02-24 |
| 8924051 | Drive device for railway vehicle | Daijiro Araki, Motomi Shimada, Shuichi Tachihara, Akira Horie | 2014-12-30 |
| 8471622 | Drive circuit of semiconductor device | Katsumi Ishikawa, Kazutoshi Ogawa | 2013-06-25 |
| 7994826 | Drive circuit for power semiconductor switching device | Katsumi Ishikawa, Hideki Miyazaki, Yasuhiko Kono | 2011-08-09 |
| 7965056 | Control apparatus of power conversion system | Mutsuhiro Terunuma, Eiichi Toyota, Motomi Shimada | 2011-06-21 |
| 7880174 | Circuit arrangement having a free-wheel diode | Haruka Shimizu, Katsumi Ishikawa, Dai Tsugawa | 2011-02-01 |
| 7783396 | Hybrid cruising control system | Hiroshi Arita, Katsumi Ishikawa, Sunao Funakoshi | 2010-08-24 |
| 7737761 | Gate drive circuit with reduced switching loss and noise | Katsumi Ishikawa, Dai Tsugawa | 2010-06-15 |
| 7577668 | Information transmission system and information transmission method | Yutaka Sato, Shigenobu Yanai, Keiji Ishida, Toshiyuki Murakami | 2009-08-18 |
| 7570085 | Gate driver circuit for switching device | Katsumi Ishikawa, Yutaka Sato, Seiji Ishida | 2009-08-04 |
| 7046155 | Fault detection system | Yutaka Sato, Katsumi Ishikawa, Ryuichi Saito, Satoru Inarida | 2006-05-16 |
| 6759964 | Fault detection system | Yutaka Sato, Katsumi Ishikawa, Ryuichi Saito, Satoru Inarida | 2004-07-06 |
| 6724313 | Fault detection system | Yutaka Sato, Katsumi Ishikawa, Ryuichi Saito, Satoru Inarida | 2004-04-20 |
| 6600978 | Railway vehicle operation-control system and a railway vehicle using the operation control system | Yutaka Sato, Shin Kimura, Kiyoshi Nakata | 2003-07-29 |
| 6452261 | Flat semiconductor device and power converter employing the same | Hironori Kodama, Hirokazu Inoue, Yasuo Osone, Shigeta Ueda, Kazuji Yamada | 2002-09-17 |
| 6414370 | Semiconductor circuit preventing electromagnetic noise | Hideo Kobayashi, Hideki Miyazaki, Shin Kimura, Junichi Sakano, Mutsuhiro Mori | 2002-07-02 |
| 6380796 | Semiconductor power converting apparatus | Hiromitsu Sakai, Hidetoshi Aizawa, Shuji Katoh, Ryuji Iyotani | 2002-04-30 |
| 6304472 | Electric power converting system with integrator providing output indicative of current | Shin Kimura, Mutsuhiro Mori, Kiyoshi Nakata, Mutsuhiro Terunuma | 2001-10-16 |
| 6271709 | Gate drive circuit of voltage drive switching element | Shin Kimura, Satoru Inarida, Hideki Miyazaki, Katsunori Suzuki | 2001-08-07 |
| 6242968 | Semiconductor power converting apparatus | Hiromitsu Sakai, Hidetoshi Aizawa, Shuji Katoh, Ryuji Iyotani | 2001-06-05 |
| 6204717 | Semiconductor circuit and semiconductor device for use in equipment such as a power converting apparatus | Hideo Kobayashi, Hideki Miyazaki, Shin Kimura, Junichi Sakano, Mutsuhiro Mori | 2001-03-20 |
| 5962877 | Inverter apparatus having improved switching element | Naoki Sakurai | 1999-10-05 |
| 5877518 | Semiconductor device and inverter apparatus using the semiconductor device | Naoki Sakurai | 1999-03-02 |
| 5859446 | Diode and power converting apparatus | Mutsuhiro Mori, Hideo Kobayashi, Junichi Sakano | 1999-01-12 |
| 5831293 | Semiconductor thyristor switching device and power converter using same | Tetsuo Mizoguchi, Hideo Kobayashi, Tsutomu Yatsuo | 1998-11-03 |