Issued Patents 2016
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9434579 | Elevator device and roller guide assembly | Hideki Arai, Takami Koyama, Tsuyoshi Sekine | 2016-09-06 |
| 9382098 | Elevator device and roller guide assembly | Hideki Arai, Takami Koyama, Tsuyoshi Sekine, Kota Ojima | 2016-07-05 |