Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11505431 | Cleaning device for an elevator system | Hirotomo Tanaka | 2022-11-22 |
| 11465879 | Elevator rope maintenance method | Hirotomo Tanaka, Takashi Takeuchi, Ryuji Onoda, Yusuke Watabe, Yoshiki Nota +1 more | 2022-10-11 |
| 11454836 | Laser processing apparatus and laser processing method | Kazuya Matsumoto, Kazuo Watanabe, Atsushi Sakamoto, Masanori Sato, Masaru Kikuchi | 2022-09-27 |