| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | Australia | 2 | |
| #3 | WIPO (World Intellectual Property Organization) | 2 | |
| #4 | Canada | 1 | |
| #5 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Civil engineering | |
| #3 | Machines | |
| #4 | Semiconductors | |
| #5 | Measurement | |
| #6 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Traffic control systems | |
| #2 | Platform constructions | |
| #3 | Unspecified technologies | |
| #4 | Guiding railway traffic | |
| #5 | Semiconductor devices | |
| #6 | Radio navigation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Tyburski Robert M | 12 |
| #2 | Dixon Donald A | 3 |
| #3 | Shillady Robert W | 1 |
| #4 | Bracht Roger | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5757288A | Vehicle detector system and method | |
| AU3624895A | Linear pressure sensor | |
| US5448232A | Roadway sensors and method of installing same | |
| US5450077A | Roadway sensor systems | |
| US5554907A | Vehicle speed measurement apparatus | |
| US5463385A | Roadway sensor systems | |
| US4912471A | Interrogator-responder communication system |