Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9419529 | DC bus voltage measurement circuit | Alpo Vallinmaki | 2016-08-16 |
| 8653823 | Detection of welded switch contacts in a line converter system | Kalyan P. Gokhale, Ilkka T. Pajari, Matti T. Jussila | 2014-02-18 |
| 7948721 | AC motor bypass with fault annunciation, serial communication and fault tolerant coil control | Jeffrey A. Brunner, Kalyan P. Gokhale, Donald J. Truettner, Dennis Tyczkowski | 2011-05-24 |
| 7154277 | Method and apparatus for detecting faults in AC to AC, or DC to AC power conversion equipments when the equipment is in a high impedance mode | Alpo Vallinmaki, Dennis Tyczkowski | 2006-12-26 |
| 6741059 | Controller for a wound rotor slip ring induction machine | Kalyan P. Gokhale, Samuli Heikkila | 2004-05-25 |
| 6448735 | Controller for a wound rotor slip ring induction machine | Kalyan P. Gokhale, Samuli Heikkila | 2002-09-10 |
| 5623219 | Maximal voltage three-phase PWM without third harmonic injection | — | 1997-04-22 |