Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11462525 | Optical coupling device and high frequency device | Mami Fujihara, Naoya Takai, Kazuki Tanaka, Yoshio Noguchi, Tsuyoshi Tokiwa | 2022-10-04 |
| 10090753 | Power conversion device and power conversion system | Kohei Hasegawa, Sari Maekawa, Atsuhiko Kuzumaki | 2018-10-02 |
| 10084442 | Semiconductor device | Kentaro Ikeda, Kohei Hasegawa | 2018-09-25 |
| 9941874 | Switching unit and power supply circuit | Kohei Hasegawa | 2018-04-10 |
| 9923464 | Switching device and power supply circuit | Kohei Hasegawa | 2018-03-20 |
| 9806706 | Switching unit and power supply circuit | Kohei Hasegawa | 2017-10-31 |