Issued Patents All Time
Showing 1–25 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11967909 | Power conversion device performing first and second conversion operations | Tomoisa Taniguchi | 2024-04-23 |
| 11811333 | Power conversion device | — | 2023-11-07 |
| 11437921 | Direct power converter and control device to improve an input power factor | — | 2022-09-06 |
| 10804811 | Control device for direct power converter for reduction of harmonic distortion | — | 2020-10-13 |
| 10666143 | Control device for direct power converter | — | 2020-05-26 |
| 10171005 | Inverter control device | — | 2019-01-01 |
| 10008956 | Power converter control device | — | 2018-06-26 |
| 9906156 | Direct-power-converter control device | — | 2018-02-27 |
| 9837929 | Power converter | — | 2017-12-05 |
| 9780683 | Power converter with a power buffer circuit whose buffered power is smaller than an AC component of a pulsating power | Naoya Yamashita | 2017-10-03 |
| 9735697 | Control method for direct power converter | — | 2017-08-15 |
| 9712076 | Power converter with clamp capacitor on DC power supply line | — | 2017-07-18 |
| 9654019 | Control method for direct power converter | — | 2017-05-16 |
| 9490722 | Method of controlling direct power converter | — | 2016-11-08 |
| 9450502 | Direct power conversion device and method for controlling direct power conversion device | — | 2016-09-20 |
| 9444360 | State quantity detection method in power converting apparatus and power converting apparatus | — | 2016-09-13 |
| 9368188 | Semiconductor device performing refresh operation | Toru Ishikawa | 2016-06-14 |
| 9276489 | Power converter having clamp circuit with capacitor and component for limiting current flowing into capacitor | Takayuki Fujita | 2016-03-01 |
| 9246398 | Power converter | Keisuke Ohta | 2016-01-26 |
| 9178409 | Power conversion control device that controls commutation of power converting apparatus based on dead time | — | 2015-11-03 |
| 9075089 | Method of measuring link voltage | — | 2015-07-07 |
| 9065353 | Direct AC power converting apparatus | — | 2015-06-23 |
| 8964424 | Power converter, control method thereof, and direct matrix converter | — | 2015-02-24 |
| 8958259 | Device performing refresh operations of memory areas | Toru Ishikawa | 2015-02-17 |
| 8913405 | Power converting apparatus generating a carrier having a waveform in which an absolute value of a slope is constant with respect to time, based on a value for internally dividing amplitude of the waveform into first and second values | — | 2014-12-16 |