Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9308923 | Regenerative braking emergency stop system | Takahiro Matsumura, Shingo Okamura, Eiji Yoshiyama | 2016-04-12 |
| 9035485 | Power conditioner for feeding system | Kazuo Tsutsumi, Takahiro Matsumura | 2015-05-19 |
| 8598739 | Electric railway power-supply system | Kazuo Tsutsumi, Takahiro Matsumura, Kazuya Nishimura, Fumiya Goto | 2013-12-03 |