Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11988262 | Damping stopper | — | 2024-05-21 |
| 10822016 | Shock-absorbing stopper | — | 2020-11-03 |
| 10611404 | Damper device and steering device | Tatsuya Ohashi | 2020-04-07 |
| 9975574 | Damper device and steering device | Tatsuya Ohashi, Masahide Nitano | 2018-05-22 |