Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 6032764 | Roller guide assembly with sound isolation | Akihiro Hasegawa, James A. Rivera, Bruce P. Swaybill | 2000-03-07 |
| 5950771 | Roller guide friction damper | Akihiro Hasegawa, James A. Rivera, Bruce P. Swaybill | 1999-09-14 |