Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10198947 | Emitter programmer and verification system | Charles Meyer, Timothy J. Hall | 2019-02-05 |
| 9478131 | Prioritization of traffic signal preemption requests received from multiple sources over different communication mediums | — | 2016-10-25 |
| 9299253 | Adaptive traffic signal preemption | — | 2016-03-29 |
| 8912922 | Field of view traffic signal preemption | — | 2014-12-16 |
| 8830085 | Monitoring traffic signal preemption | David John Edwardson, David R. Johnson, Patrick Keenan Cosgrove, Nicole Maria Montgomery | 2014-09-09 |
| 8823548 | Control of traffic signal phases | David R. Johnson | 2014-09-02 |