Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12227391 | Vibration damping device and elevator apparatus | Eiichi Saito, Takahide Hirai, Seiji Watanabe, Daisuke Nakazawa, Tomohiro Asamura +1 more | 2025-02-18 |
| 12195304 | Break detection device configured to determine whether or not a broken portion is present in a rope | Toshiaki Kato, Daisuke Nakazawa, Akihiro Nakaya, Hiroyuki Murakami, Hideki Shiozaki | 2025-01-14 |
| 12110211 | Break detection device | Daisuke Nakazawa, Toshiaki Kato, Hiroyuki Murakami, Satoshi Yamasaki | 2024-10-08 |
| 12103823 | Vibration damping device and elevator apparatus | Eiichi Saito, Takahide Hirai, Seiji Watanabe, Daisuke Nakazawa, Tomohiro Asamura +1 more | 2024-10-01 |
| 12098059 | Sway amount estimation system and elevator apparatus | Eiichi Saito, Takahide Hirai, Seiji Watanabe, Daisuke Nakazawa, Tomohiro Asamura +1 more | 2024-09-24 |
| 12049385 | Vibration damping system and elevator apparatus | Eiichi Saito, Takahide Hirai, Seiji Watanabe, Daisuke Nakazawa, Tomohiro Asamura +1 more | 2024-07-30 |
| 10246296 | Control cable guide device for elevator | Seiji Watanabe, Daisuke Nakazawa, Masahiro Ishikawa | 2019-04-02 |
| 9862570 | Controlling sway of elevator cable connected to elevator car | Mouhacine Benosman, Daisuke Nakazawa, Seiji Watanabe | 2018-01-09 |
| 9475674 | Controlling sway of elevator rope using movement of elevator car | Mouhacine Benosman, Seiji Watanabe, Daisuke Nakazawa | 2016-10-25 |
| 9327942 | Elevator rope sway detection device | Seiji Watanabe, Tsunehiro Higashinaka | 2016-05-03 |
| 7909144 | Car oscillation detecting device for elevator using a set value to judge car oscillation | Kenichi Okamoto | 2011-03-22 |
| 7784590 | Elevator operation control device | Seiji Watanabe, Takashi Yumura, Hideki Nishiyama, Hideki Shiozaki | 2010-08-31 |