Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10734883 | Momentary-voltage-drop compensation apparatus and momentary-voltage-drop compensation system | — | 2020-08-04 |
| 10707776 | 3-level power conversion circuit including serially-connected switching element and diode | Hiromu Takubo | 2020-07-07 |
| 10135352 | Controller for power converter with frequency modulated carrier | — | 2018-11-20 |
| 9509145 | Distributed power supply system | Norikazu Kanao, Toshiya Yamada, Motohiro Katayama | 2016-11-29 |
| 8928178 | Isolated operation detection device | Toshiya Yamada | 2015-01-06 |
| 8750004 | Three level inverter device | — | 2014-06-10 |
| 8743571 | Distributed power supply system with harmonic signal generation for stabilization | Toshiya Yamada, Kazuyoshi Umezawa, Masaki Katoh, Motohiro Katayama | 2014-06-03 |
| 8559201 | Grid-connected inverter | Toshiya Yamada, Masaki Katoh | 2013-10-15 |
| 8547073 | Output side capacitor voltage balancing DC power supply system | — | 2013-10-01 |
| 8384364 | Unit inverter system | — | 2013-02-26 |
| 8203813 | Distributed power supply system | Toshiya Yamada, Masaki Katoh | 2012-06-19 |