Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9843272 | Power converter capable of outputting a plurality of different levels of voltages | — | 2017-12-12 |
| 9812992 | Power conversion system | Kaho MUKUNOKI, Toshiyuki Fujii, Osamu Mori, Sadao Funahashi, Yasuhiko Hosokawa +1 more | 2017-11-07 |
| 9806630 | Power conversion device | Kaho MUKUNOKI, Toshiyuki Fujii, Miwako TANAKA, Osamu Mori, Sadao Funahashi +2 more | 2017-10-31 |
| 9780685 | Electrical power converter with a converter cell series unit | Takushi Jimichi, Kimiyuki Koyanagi, Satoshi Azuma, Sadao Funahashi, Yasuhiko Hosokawa +1 more | 2017-10-03 |
| 9755542 | Direct-current power transmission power conversion device and direct-current power transmission power conversion method | Toshiyuki Fujii, Kaho MUKUNOKI, Osamu Mori, Sadao Funahashi, Yasuhiko Hosokawa +1 more | 2017-09-05 |
| 9712084 | Electric power conversion device | Takeshi Kikuchi, Kaho MUKUNOKI, Toshiyuki Fujii, Osamu Mori, Sadao Funahashi +2 more | 2017-07-18 |
| 9564808 | Electric power conversion device | Kimiyuki Koyanagi, Takushi Jimichi, Satoshi Azuma, Yasuhiko Hosokawa, Sadao Funahashi +1 more | 2017-02-07 |
| 9564827 | Power conversion device | Kaho MUKUNOKI, Toshiyuki Fujii, Osamu Mori, Sadao Funahashi, Yasuhiko Hosokawa +1 more | 2017-02-07 |
| 9099937 | Power converter capable of outputting a plurality of different levels of voltages | — | 2015-08-04 |
| 9048770 | Synchronous machine starting device | Hisanori Taguchi, Yasuhiko Hosokawa, Akinobu Ando | 2015-06-02 |
| 8872466 | Synchronous-machine starting device | Hisanori Taguchi, Akinobu Ando, Yasuhiko Hosokawa | 2014-10-28 |
| 8531144 | Synchronous-machine starting device | Yosuke Fujii, Akinobu Ando, Yasuhiko Hosokawa | 2013-09-10 |
| 8519656 | Synchronous machine starting device | Yosuke Fujii, Akinobu Ando, Yasuhiko Hosokawa | 2013-08-27 |
| 8362730 | Synchronous machine starting device | Yosuke Fujii, Akinobu Ando, Yasuhiko Hosokawa | 2013-01-29 |
| 6465912 | Power transfer device | Fuminori Nakamura, Isao Kamiyama, Masatoshi Takeda, Hiroshi Yamamoto, Yuji Kuroda | 2002-10-15 |
| 6052297 | Power conversion apparatus | Masahiko Akamatsu, Michiharu Tsukada, Daisuke Itoh | 2000-04-18 |
| 5991181 | Power conversion apparatus | Toshiyuki Fujii, Megumu Morita, deceased, Yukao Tanaka | 1999-11-23 |
| 5886888 | Voltage source type power converting apparatus | Masahiko Akamatsu, Fuminori Nakamura, Shotaro Murakami, Tomohiko Aritsuka, Takeaki Asaeda | 1999-03-23 |
| 5867376 | DC magnetization suppression in power converter transformers | Fuminori Nakamura, Sadao Funahashi | 1999-02-02 |
| 5808462 | Apparatus for detecting the amplitude and phase of an a.c. signal | Toshiyuki Fujii, Hatsuhiko Naitoh, Naohiro Toki | 1998-09-15 |
| 5731698 | Apparatus for detecting the amplitude and phase of an a.c. signal | Toshiyuki Fujii, Hatsuhiko Naitoh, Naohiro Toki | 1998-03-24 |
| 5717583 | Power converter control apparatus for controlling commutation of switching devices under transient conditions | Masamori Nobayashi, Koji Yamaji, Kazuo Kato, Naohiro Toki, Toshiyuki Fujii +1 more | 1998-02-10 |
| 5714877 | Apparatus for detecting the amplitude and phase of an A.C. signal | Toshiyuki Fujii, Hatsuhiko Naitoh, Naohiro Toki | 1998-02-03 |
| 5602469 | Apparatus for detecting the amplitude and phase of an a.c. signal | Toshiyuki Fujii, Hatsuhiko Naitoh, Naohiro Toki | 1997-02-11 |
| 5498955 | Apparatus for detecting the amplitude and phase of an a.c. signal | Toshiyuki Fujii, Hatsuhiko Naitoh, Naohiro Toki | 1996-03-12 |