Patents per Year
Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 11325809 | Monitoring roller guide health | Norbert Antony Murray Hootsmans | 2022-05-10 | |
| 10011463 | Elevator door friction belt drive including one or more markers | YiSug Kwon | 2018-07-03 | |
| 8820483 | Elevator machine support | Richard J. Ericson, Harold Terry, Leandre Adifon, Stephen R. Nichols, Robin Mihekun Miller +1 more | 2014-09-02 | |
| 8307952 | Elevator system with multiple cars in a hoistway | Richard N. Fargo, Harold Terry, Frank Sansevero, Boris G. Traktovenko, John M. Milton-Benoit +2 more | 2012-11-13 | |
| 7753175 | Elevator car having an angled underslung roping arrangement | Loren Fanion, Kevin Gleason, Daniel Greer, Robert Hammell, Dave Jarvis +5 more | 2010-07-13 | $15,953,000 |
| 6032764 | Roller guide assembly with sound isolation | Akihiro Hasegawa, James A. Rivera, Bruce P. Swaybill | 2000-03-07 | $35,164,000 |
| 5950771 | Roller guide friction damper | Akihiro Hasegawa, James A. Rivera, Bruce P. Swaybill | 1999-09-14 | $22,289,000 |