Issued Patents 2020
| 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 |
| 10825337 | Autonomous commissioning and inspection of alarm systems | Marcin Piech, Tadeusz Pawel Witczak, Stella M. Oggianu, Srinivasa Reddy Pilli, Vinay Kumar Vinnakota +1 more | 2020-11-03 |
| 10827238 | Elevator door sensor integrated with a long range communication gateway | Tadeusz Pawel Witczak, Stella M. Oggianu | 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 |