Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11591183 | Enhancing elevator sensor operation for improved maintenance | Peter Liaskas, Nikola Trcka, Sandeep Sudi | 2023-02-28 |
| 5929400 | Self commissioning controller for field-oriented elevator motor/drive system | Roy S. Colby, Alberto Vecchiotti, Neil A. Greiner, Ronnie E. Thebeau | 1999-07-27 |
| 5883344 | Automatic calibration of field-oriented elevator motor drive parameters using standstill motor measurements | Roy S. Colby, Alberto Vecchiotti | 1999-03-16 |
| 5880415 | Automatic calibration of current regulator control compensation for an elevator motor drive with locked rotor | Roy S. Colby, Alberto Vecchiotti | 1999-03-09 |