Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9643820 | Device for preventing travel of an elevator with its doors open | Hideki Arai, Shunji Imai | 2017-05-09 |
| 9359178 | Detector for electromagnetic brake | Hideki Arai | 2016-06-07 |
| 8689945 | Device for preventing travel of an elevator with its doors open | Hideki Arai, Shunji Imai | 2014-04-08 |
| 6085874 | Rail-climbing elevator counterweight having flat machines | Kenji Nakagawa, Hirofumi Yuda, Masaharu Ueda, Yasuhisa Shioda, Takayuki Nagashima | 2000-07-11 |