Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9991883 | Static switch | Yasuaki Matsumoto, Akinobu Ando | 2018-06-05 |
| 9912259 | Thyristor starting device and control method therefor | Hiroshi Ogino, Akinobu Ando, Ryota OKUYAMA | 2018-03-06 |
| 9812992 | Power conversion system | Kaho MUKUNOKI, Toshiyuki Fujii, Osamu Mori, Shinzo Tamai, Sadao Funahashi +1 more | 2017-11-07 |
| 9806630 | Power conversion device | Kaho MUKUNOKI, Toshiyuki Fujii, Miwako TANAKA, Osamu Mori, Shinzo Tamai +2 more | 2017-10-31 |
| 9780685 | Electrical power converter with a converter cell series unit | Takushi Jimichi, Kimiyuki Koyanagi, Satoshi Azuma, Sadao Funahashi, Shinzo Tamai +1 more | 2017-10-03 |
| 9762142 | Electric power converter with a voltage controller and a current controller | Horst Gruening | 2017-09-12 |
| 9755542 | Direct-current power transmission power conversion device and direct-current power transmission power conversion method | Toshiyuki Fujii, Kaho MUKUNOKI, Osamu Mori, Shinzo Tamai, Sadao Funahashi +1 more | 2017-09-05 |
| 9712084 | Electric power conversion device | Takeshi Kikuchi, Kaho MUKUNOKI, Toshiyuki Fujii, Osamu Mori, Shinzo Tamai +2 more | 2017-07-18 |
| 9621026 | Power conversion apparatus | — | 2017-04-11 |
| 9606163 | Ground fault detecting circuit and power converting device including the same | Akinobu Ando, Hiroshi Ogino, Yasuaki Matsumoto, Shigeyuki Nakabayashi | 2017-03-28 |
| 9564808 | Electric power conversion device | Kimiyuki Koyanagi, Takushi Jimichi, Satoshi Azuma, Shinzo Tamai, Sadao Funahashi +1 more | 2017-02-07 |
| 9564842 | DC voltage detector and power converter using the same | Hiroshi Ogino, Akinobu Ando | 2017-02-07 |
| 9564827 | Power conversion device | Kaho MUKUNOKI, Toshiyuki Fujii, Osamu Mori, Shinzo Tamai, Sadao Funahashi +1 more | 2017-02-07 |
| 9343994 | Power conversion apparatus having two secondary winding groups | — | 2016-05-17 |
| 9281740 | Power conversion apparatus | Toshifumi Ise, Shinsuke Kadoi | 2016-03-08 |
| 9048770 | Synchronous machine starting device | Shinzo Tamai, Hisanori Taguchi, Akinobu Ando | 2015-06-02 |
| 8872466 | Synchronous-machine starting device | Shinzo Tamai, Hisanori Taguchi, Akinobu Ando | 2014-10-28 |
| 8605470 | Power converter performing soft switching | Toshifumi Ise, Hirotake Nakaji | 2013-12-10 |
| 8531144 | Synchronous-machine starting device | Shinzo Tamai, Yosuke Fujii, Akinobu Ando | 2013-09-10 |
| 8519656 | Synchronous machine starting device | Shinzo Tamai, Yosuke Fujii, Akinobu Ando | 2013-08-27 |
| 8508962 | Power conversion apparatus | Toshifumi Ise, Hirotake Nakaji | 2013-08-13 |
| 8362730 | Synchronous machine starting device | Shinzo Tamai, Yosuke Fujii, Akinobu Ando | 2013-01-29 |
| 5942880 | Compensation control device for a power system | Masahiko Akamatsu, Shotaro Murakami | 1999-08-24 |
| 5646511 | Power system compensator apparatus and power converter apparatus | Masahiko Akamatsu, Shotaro Murakami | 1997-07-08 |
| 4555750 | Control apparatus for D.C. power transmission system | Susumu Matsumura, Kanji Katsuki, Masao Yano | 1985-11-26 |