Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9352653 | Circuit breaking unit and railcar including the same | Hiroyuki Kawasaki, Hiroyuki Sakurai, Ryoji Negi, Nobuyuki Sema, Kenji Sekiguchi | 2016-05-31 |
| 9225075 | High voltage device system of railcar and railcar | Hiroyuki Kawasaki, Hiroyuki Sakurai, Ryoji Negi, Nobuyuki Sema | 2015-12-29 |