Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10889307 | Door device and vehicle having the same | Hitoshi Akiyama | 2021-01-12 |
| 10570651 | Plug door lock device and plug door system | Shinji Ueda, Atsuhito Yamaguchi | 2020-02-25 |
| 9663119 | Railroad vehicle and plug door for railroad vehicle | Yukio Takahashi, Hiroki Tsunoda, Soshi Kawakami, Yuya Futamura, Tomoyuki Fukunaga +1 more | 2017-05-30 |
| 9403540 | Railroad vehicle and plug door for railroad vehicle | Yukio Takahashi, Hiroki Tsunoda, Soshi Kawakami, Yuya Futamura, Tomoyuki Fukunaga +1 more | 2016-08-02 |