Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12231063 | Power conversion device, control device for power conversion device, and power conversion control method | Masahito Shoyama, Koki Hebishima | 2025-02-18 |
| 11936303 | Power conversion circuit including a first bridge circuit and a second bridge ciruit | — | 2024-03-19 |
| 11598453 | Threaded connection for steel pipe | Masaaki Sugino, Tatsuya Yamamoto | 2023-03-07 |
| 10819243 | Isolated DC/DC converter, control unit for isolated DC/DC converter, and DC/AC converter | Takashi Iida | 2020-10-27 |
| 10400922 | Threaded joint for steel pipes | Masaaki Sugino | 2019-09-03 |
| 9832909 | Electronic equipment cooling device and power converter having electronic equipment cooling device | Yasuhito Tanaka, Masakazu Gekinozu, Masaki Sakuma | 2017-11-28 |
| 9774269 | Bidirectional DC/DC converter | Kunio Matsubara | 2017-09-26 |
| 9661783 | Magnetic component cooling structure and power converter having the same | Masaki Sakuma, Masakazu Gekinozu, Yasuhito Tanaka | 2017-05-23 |
| 9596791 | Cooling device and power converter having cooling device | Masaki Sakuma, Masakazu Gekinozu, Yasuhito Tanaka | 2017-03-14 |
| 9379617 | Resonant DC-DC converter control device | — | 2016-06-28 |
| 9331580 | Switching power supply system and control circuit of the switching power supply system | Masahiko Sakurai | 2016-05-03 |
| 9230533 | Sound absorbing body and manufacturing method thereof | Yoshiko Nishikawa | 2016-01-05 |
| 9197135 | Bi-directional DC/DC converter with frequency control change-over | Kunio Matsubara | 2015-11-24 |
| 9042128 | Switching power supply | Masahiko Sakurai | 2015-05-26 |
| 8885365 | Switching power supply device and method for control thereof | Masahiko Sakurai | 2014-11-11 |
| 8773111 | Current estimation circuit | — | 2014-07-08 |
| 8443935 | Sound absorbing body | Yoshiko Nishikawa | 2013-05-21 |
| 8345456 | Control system of a power factor correction circuit | — | 2013-01-01 |
| 8223512 | Power converter having an inductor including a first set of windings and a second set of windings both wound on a common core | Michiya Yamada | 2012-07-17 |
| 8213189 | Resonance-type power supply with improved convertion efficiency | — | 2012-07-03 |
| 8090182 | Image reconstruction device, image reconstruction method, image reconstruction program, and CT apparatus | — | 2012-01-03 |
| 8014177 | Switching power supply with pulse frequency modulation control | — | 2011-09-06 |
| 7894212 | Switching power supply device | — | 2011-02-22 |
| 7872880 | Switch mode power supply | — | 2011-01-18 |
| 7746672 | Switching power supply apparatus | — | 2010-06-29 |