Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11901737 | Distributed-power-supply power conversion system | Issei FUKASAWA, Ruben Alexis Inzunza Figueroa | 2024-02-13 |
| 11881710 | Power conversion apparatus and power conversion system | Chieko Umeno | 2024-01-23 |
| 11378628 | Testing device of inverter device | Yoshihiro TAWADA | 2022-07-05 |
| 11018495 | Control device for electric power conversion apparatus | Yoshihiro TAWADA, Ruben Alexis Inzunza Figueroa, Masahiro Kinoshita | 2021-05-25 |
| 10666160 | Power conversion device and method for operating same with reactive power compensation | Tsuguhiro Tanaka, Masahiro Kinoshita | 2020-05-26 |
| 10536001 | Photovoltaic system | Yuji Matsuoka, Naoki Fujiwara, Paul S. Bixel, Ryuta Saka | 2020-01-14 |
| 9985553 | Control device of inverter | Yuji Matsuoka | 2018-05-29 |
| 9948207 | Inverter control apparatus | Ruben Alexis Inzunza Figueroa, Takeshi Sumiya | 2018-04-17 |
| 9863992 | Fault detecting apparatus and detecting method of the same | Eiichi Ikawa, Chieko Umeno | 2018-01-09 |
| 9762143 | Devices and methods for controlling current in inverters | Yuji Matsuoka, Tsuguhiro Tanaka, Paul S. Bixel | 2017-09-12 |
| 9722458 | Power conversion device and method of controlling the same | Yuji Matsuoka | 2017-08-01 |
| 9673733 | Control apparatus for photovoltaic inverter | Yuji Matsuoka, Ruben Alexis Inzunza Figueroa | 2017-06-06 |
| 8681512 | Active clamp resonance control | David Westmoreland | 2014-03-25 |
| 6898093 | Power conversion circuit with clamp and soft start | Gary Dean Conner | 2005-05-24 |
| 5965038 | Control equipment for resistance welding machine | Yoshihito Nomura, Saburou Souma, Chihiro Okado | 1999-10-12 |
| 5844193 | Control equipment for resistance welding machine | Yoshihito Nomura, Saburo Souma, Chihiro Okado | 1998-12-01 |
| 4860186 | PWM controller having synchronous and asynchronous mode | Katsumi Maekawa | 1989-08-22 |
| 4646222 | Inverter provided with an overvoltage clamping circuit | Chihiro Okado, Kazushi Ichimura | 1987-02-24 |