Tetra Tech is constantly innovating, investing in research and development, and protecting its intellectual property. Tetra Tech has been issued the following patents relating to railroad track and vehicle inspection. In addition, Tetra Tech has multiple patents pending in the United States and other countries.

Patent NumberPatent TitlePriority Filing DatePatent Issue DateCountry
9,618,335Light Emission Power Control Apparatus and Method19-Jan-201511-Apr-2017United States
9,950,720Light Emission Power Control Apparatus and Method
19-Jan-2015
24-Apr-2018
United States
9,860,962
Light Emission Power Control Apparatus and Method
19-Jan-2015
2-Jan-2018
United States
10,349,491
Light Emission Power Control Apparatus and Method
19-Jan-2015
9-Jul-2019
United States
10,728,988
Light Emission Power Control Apparatus and Method
19-Jan-2015
28-Jul-2020
United States
2,893,017
Light Emission Power Control Apparatus and Method
19-Jan-2015
24-Mar-2020
Canada
9,849,894
Protective Shroud for Enveloping Light from a Light Emitter for Mapping of a Railway Track
19-Jan-2015
26-Dec-2017
United States
10,384,697
Protective Shroud for Enveloping Light from a Light Emitter for Mapping of a Railway Track
19-Jan-2015
20-Aug-2019
United States
2,892,952
Protective Shroud
19-Jan-2015
15-Oct-2019
Canada
9,849,895
Sensor Synchronization Apparatus and Method 19-Jan-2015
26-Dec-2017
United States
10,322,734
Sensor Synchronization Apparatus and Method
19-Jan-2015
18-Jun-2019
United States
2,893,007
Sensor Synchronization Apparatus and Method
19-Jan-2015
28-Apr-2020
Canada
10,362,293
3D Track Assessment System and Method
20-Feb-2015
23-Jul-2019
United States
2,892,885
3D Track Assessment System and Method
20-Feb-2015
28-Jul-2020
Canada
10,582,187
3D Track Assessment Method
20-Feb-2015
3-Mar-2020
United States
10,616,556
3D Track Assessment Method
20-Feb-2015
7-Apr-2020
United States
10,616,557
3D Track Assessment Method
20-Feb-2015
7-Apr-2020
United States
10,616,558
3D Track Assessment Method
20-Feb-2015
7-Apr-2020
United States
10,625,760Apparatus and Method for Calculating Wooden Crosstie Plate Cut Measurements and Rail Seat Abrasion Measurements Based on Rail Head Height
01-Jun-2018
21-Apr-2020
United States
10,730,538Apparatus and Method for Calculating Plate Cut and Rail Seat Abrasion Based on Measurements Only of Rail Head Elevation and Crosstie Surface Elevation
01-Jun-2018
4-Aug-2020
United States
10,807,623Apparatus and Method for Gathering Data from Sensors Oriented at an Oblique Angle Relative to a Railway Track
01-Jun-2018
20-Oct-2020
United States
10,435,052Broken Wheel Detection System
22-Feb-2017
8-Oct-2019
United States
10,723,373
Broken Wheel Detection System
22-Feb-2017
28-Jul-2020
United States
2018224073Broken Wheel Detection System
22-Feb-2017
22-Oct-2020
Australia