Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7701077 | Secondary power for critical loads for railroad | Jeffrey Louis Daigle, Ajith Kuttannair Kumar | 2010-04-20 |
| 5483436 | Gate drive power supply operable from a source of unregulated DC electric power | Philip R. Cooke, Donald D. Bock | 1996-01-09 |
| 5331261 | Regenerative braking protection for an electrically-propelled traction vehicle | Ronald F. Griebel, Ajith Kuttannair Kumar, Stuart W. McElhenny, Dean S. Grinch | 1994-07-19 |
| 5262691 | Gate turnoff thyristor control circuit with shorted gate detection | Ronald B. Bailey | 1993-11-16 |
| 5245495 | Automatic flashover protection for locomotive traction motors | Ronald B. Bailey, Myron L. Smith, Edgar T. Balch, Roger Huczko, Joseph A. Laukaitis | 1993-09-14 |
| 5168416 | Automatic flashover protection for locomotive traction motors | Ronald B. Bailey, Myron L. Smith, Edgar T. Balch, Roger Huczko, Joseph A. Laukaitis | 1992-12-01 |
| 4791341 | Speed reducing control system for a polyphase electric motor | Thomas D. Stitt | 1988-12-13 |
| 4524316 | Speed reducing control system with voltage regulation for a polyphase electric motor | Thomas D. Stitt | 1985-06-18 |
| 4471421 | Means for controlling a forced commutated hybrid a-c to d-c electric rectifying bridge to avoid reverse recovery overvoltage in the diode leg | Ivan Horvat, Ajith Kuttannair Kumar | 1984-09-11 |
| 4467408 | Means for controlling a forced commutated ac-to-dc electric rectifying circuit to avoid commutation failure | Edward S. Matulevich, Ajith Kuttannair Kumar | 1984-08-21 |