Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10822199 | Sensor fusion of acceleration sensor and air pressure sensor information to estimate elevator floor level and position | Derk Oscar Pahlke, Tadeusz Pawel Witczak, Yrinee Michaelidis | 2020-11-03 |
| 10669121 | Elevator accelerometer sensor data usage | Guohong Hu | 2020-06-02 |
| 10578639 | Hybrid altimeter for measuring vertical velocity | Daryl J. Marvin, Benjamin J. Watson, Arthur T. Grondine, Marcin Wroblewski | 2020-03-03 |
| 9979412 | Encoder resolution reduction | Keunmo Kang, Slade R. Culp, William A. Veronesi, Daryl J. Marvin | 2018-05-22 |
| 9935494 | Elevator power supply for inverter controller | Kyle W. Rogers, Daryl J. Marvin, Leslie C. Watterson | 2018-04-03 |
| 9403663 | Managing remote control of an elevator system | Henry Dellarippa, Karl D. Pedersen, Medha Ramakant Dedgaonkar, Jean Manuel Sanches | 2016-08-02 |
| 6385547 | Automatic monitoring of high voltage signals | — | 2002-05-07 |
| 5440617 | Simple modem log-on authentication | Richard F. Rynaski, Brian Beloin | 1995-08-08 |
| 5345046 | Voice communication for elevator | Richard F. Rynaski | 1994-09-06 |