Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6023137 | Use of traction inverter for supplying power for non-traction applications | Ajith Kuttannair Kumar | 2000-02-08 | $225,161,000 |
| 5561602 | Tunnel operation for self-propelled traction vehicles | Warren F. Bessler, Gregory A. Marsh | 1996-10-01 | $44,832,000 |
| 5331261 | Regenerative braking protection for an electrically-propelled traction vehicle | Herbert J. Brown, Ajith Kuttannair Kumar, Stuart W. McElhenny, Dean S. Grinch | 1994-07-19 | $17,467,000 |
| 5253613 | High power AC traction inverter cooling | Ronald B. Bailey | 1993-10-19 | $16,670,000 |