Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7514807 | Alternator boost method | Andrew Tarnow | 2009-04-07 |
| 7507500 | Design of a large battery pack for a hybrid locomotive | David H. Swan, John D. Watson | 2009-03-24 |
| 7467830 | Managing wheel slip in a locomotive | — | 2008-12-23 |
| 7349797 | Emission management for a hybrid locomotive | Douglas W. Swartz, John D. Watson | 2008-03-25 |
| 7309929 | Locomotive engine start method | Andrew Tarnow | 2007-12-18 |
| 7304445 | Locomotive power train architecture | — | 2007-12-04 |
| 7124691 | Method for monitoring and controlling locomotives | Brian Gulayets Iwan, John D. Watson, David H. Swan | 2006-10-24 |
| 7084602 | Predicting wheel slip and skid in a locomotive | David H. Swan, John D. Watson | 2006-08-01 |
| 7064507 | Managing wheel skid in a locomotive | John D. Watson | 2006-06-20 |
| 6984946 | Method for monitoring and controlling traction motors in locomotives | Brian Gulayets Iwan | 2006-01-10 |
| 6812656 | Sequenced pulse width modulation method and apparatus for controlling and powering a plurality of direct current motors | Brian Ward Gulayets | 2004-11-02 |
| D464622 | Battery terminals | — | 2002-10-22 |
| 6308639 | Hybrid battery/gas turbine locomotive | Gerard Henry Koldyk | 2001-10-30 |
| 5129328 | Gas turbine locomotive fueled by compressed natural Gas | — | 1992-07-14 |
| 4900944 | Booster unit for diesel electric locomotive | — | 1990-02-13 |