Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6459965 | Method for advanced communication-based vehicle control | Alan L. Polivka, James R. Egnot, Jeffrey Baker, William L. Matheson | 2002-10-01 |
| 5533695 | Incremental train control system | Donald B. Schaefer, Jr. | 1996-07-09 |
| 5452870 | Fixed data transmission system for controlling train movement | — | 1995-09-26 |
| 5340062 | Train control system integrating dynamic and fixed data | — | 1994-08-23 |