Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12119742 | Integrated circuit and method of digitally controling critical mode power factor correction circuit | Ryuichi Furukoshi | 2024-10-15 |
| 12113436 | Integrated circuit and method of synchronous rectification control of bridgeless power factor correction circuit | Ryuichi Furukoshi | 2024-10-08 |
| 10910952 | Control apparatus and method for current resonance circuit and current resonance power supply | Ryuichi Furukoshi | 2021-02-02 |
| 10879786 | Power conversion device and control circuit | Junichi Takada, Mitsutomo Yoshinaga, Toshihiro Nakano, Koki Imai | 2020-12-29 |
| 10826311 | Alternating-current voltage detection circuit | — | 2020-11-03 |
| 10608526 | Device and method for calculating switching time | Ryuichi Furukoshi | 2020-03-31 |
| 10608536 | Power conversion device and control circuit | Junichi Takada, Mitsutomo Yoshinaga, Toshihiro Nakano, Koki Imai | 2020-03-31 |
| 10389247 | Power conversion device and control circuit including stop transitioning to stop state | Junichi Takada, Mitsutomo Yoshinaga, Toshihiro Nakano, Koki Imai | 2019-08-20 |
| 10224730 | Capacitor discharge circuit | — | 2019-03-05 |
| 9985536 | Current resonant power supply device | Takeki Sugahara | 2018-05-29 |
| 9979297 | Current resonant power supply device | Takeki Sugahara | 2018-05-22 |
| 9871455 | Current resonance type power supply device | Ryuichi Furukoshi | 2018-01-16 |
| 9774262 | Current resonance type power supply device | Ryuichi Furukoshi | 2017-09-26 |
| 9754740 | Switching control circuit and switching power-supply device | Takeki Sugahara | 2017-09-05 |
| 9716427 | Power factor correction circuit having bottom skip controller | Youichi Terasawa, Ryuichi Furukoshi | 2017-07-25 |
| 9641088 | Current resonant power source apparatus | Ryuichi Furukoshi | 2017-05-02 |
| 9564826 | Current resonant power supply device | Takeki Sugahara | 2017-02-07 |
| 9455640 | Switching power-supply device | — | 2016-09-27 |
| 9444352 | Current resonance type power supply device | Ryuichi Furukoshi | 2016-09-13 |
| 9338844 | LED lighting apparatus | — | 2016-05-10 |
| 9331584 | Switching power-supply device | — | 2016-05-03 |
| 9306383 | Low current protection circuit | — | 2016-04-05 |
| 8547028 | Constant current power supply device | — | 2013-10-01 |
| 7382633 | DC converter | Shinji Aso, Ryuichi Furukoshi | 2008-06-03 |