Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12294328 | Power conversion device | Fumihiro Sato, Keisuke Tanabe, Naoki Takata, Daisuke Matsumoto, Shigetoshi Yagihara | 2025-05-06 |
| 11870384 | Speed calculation device and power conversion device | Hiroshi Watanabe, Masataka Sasaki, Yusuke Arao, Atsuhiko Nakamura, Hiroyuki Tomita +2 more | 2024-01-09 |
| 8531140 | Power transducer | Satoshi Ibori, Yoshihiro Uchino, Hiroshi Watanabe | 2013-09-10 |
| 8423317 | Temperature detection method of semiconductor device and power conversion apparatus | Tomoya Kamezawa, Naoki Takata, Masayuki Hirota, Satoshi Ibori | 2013-04-16 |
| 8378599 | Power transducer | Satoshi Ibori, Yoshihiro Uchino, Hiroshi Watanabe | 2013-02-19 |
| 8159820 | Electric power conversion system | Satoshi Ibori, Koji Hamano, Jiangming Mao, Tomoya Kamezawa, Masayuki Hirota | 2012-04-17 |
| 8120294 | Power transducer | Satoshi Ibori, Yoshihiro Uchino, Hiroshi Watanabe | 2012-02-21 |
| 7904254 | Power conversion apparatus and method of estimating power cycle life | Satoshi Ibori, Tomoya Kamezawa, Jiangming Mao, Masayuki Hirota | 2011-03-08 |
| 7643304 | Filter apparatus and frequency converter to which the filter apparatus is connected | Masayuki Hirota, Satoshi Ibori, Naoki Takata | 2010-01-05 |
| 7515422 | Electric power converter | Masayuki Hirota, Satoshi Ibori, Tomoya Kamezawa, Jiangming Mao | 2009-04-07 |
| 7394668 | Switching power supply circuit and frequency converter | Tooru Nakajima, Tetsuya Kimura, Satoshi Ibori, Masayuki Hirota | 2008-07-01 |
| 7151680 | Switching power supply circuit and frequency converter | Tooru Nakajima, Tetsuya Kimura, Satoshi Ibori, Masayuki Hirota | 2006-12-19 |
| 6704212 | PWM inverter with long carrier wave insertion | Teiichi Furukawa, Hiroyuki Tomita, Seiji Ishida, Toshiaki Okuyama | 2004-03-09 |
| 6693404 | AC current detecting device for inverter apparatus and AC current detecting method therefor | Junji Kato, Tetsuya Kimura, Teiichi Furukawa | 2004-02-17 |
| 6556464 | PWM converter system | Keijirou Sakai, Toshiaki Okuyama, Kinya Nakatsu, Seiji Ishida, Hiroshi Fujii +1 more | 2003-04-29 |
| 6496397 | Inverter device | Keijiro Sakai, Toshiaki Okuyama, Kinya Nakatsu, Seiji Ishida, Hiroshi Fujii +1 more | 2002-12-17 |
| 6486548 | Semiconductor module and power converting apparatus using the module | Kinya Nakatsu, Toshio Ogawa, Akihiro Tamba, Hiroshi Fujii, Hiroyuki Tomita +2 more | 2002-11-26 |
| 6286008 | Electronic information distribution method and recording medium | Tatsuro Matsumoto, Kousei Isomichi, Chiaki Itoh | 2001-09-04 |
| 5949663 | Inverter apparatus capable of readily modification of the specification and performance thereof | Tsunehiro Endo, Kinya Nakatsu, Hiroshi Fujii, Norinaga Suzuki | 1999-09-07 |