For the Inventor, By the Inventor

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Pueblo, CO, United States of America

Transportation Technology Center, Inc.

USPTO Granted Patents = 11

Trademarks = 8

Forward Citations = 75

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17 inventors (with patents filed for the assignee):

Daniel Hunter Stone (4 out of 4 patents)

Alan Lee Polivka (2 out of 2 patents)

Jerome J Malone, Jr (2 out of 2 patents)

4. Francisco C Robles Hernandez (2 out of 2 patents)

5. Mark A Dembosky (2 out of 3 patents)

6. Kevin D Hass (2 out of 3 patents)

7. Kevin James Sawley (2 out of 2 patents)

8. Douglas R Earnest (1 out of 3 patents)

9. Brian Eric Smith (1 out of 1 patent)

10. Steven Mark Renfrow (1 out of 2 patents)

11. Muhammad Naeem Akhtar (1 out of 1 patent)

12. David Daniel Davis (1 out of 1 patent)

13. Gopichand Katragadda (1 out of 1 patent)

14. Gregory Anthony Garcia (1 out of 1 patent)

15. Richard Paul Reiff (1 out of 1 patent)

11 patents: Sort by Forward Citations

1. 9162691 - System and method for detecting broken rail and occupied track from a railway vehicle (2015-10-20),

2. 9102341 - Method for detecting the extent of clear, intact track near a railway vehicle (2015-08-11),

3. 7871015 - Rail joint assembly using embedded load transfer keys and method therefor (2011-01-18),

4. 7591909 - Railroad wheel steels having improved resistance to rolling contact fatigue (2009-09-22),

5. 7559999 - Railroad wheel steels having improved resistance to rolling contact fatigue (2009-07-14),

6. 6768298 - Transverse crack detection in rail head using low frequency eddy currents (2004-07-27),

7. 6675077 - Wheel-railhead force measurement system and method having cross-talk removed (2004-01-06),

8. 6632297 - Railway wheels resistant to martensite transformation (2003-10-14),

9. 6387191 - Railway wheels resistant to martensite transformation (2002-05-14),

10. 6381521 - Dynamic angle of attack measurement system and method therefor (2002-04-30),

11. 6062090 - Apparatus and method for determining the strength and type of soil (2000-05-16),

Transportation Technology Center, Inc. (TTCI) is a subsidiary of the Association of American Railroads (AAR) that provides a full range of testing and research services to the railway industry. With state-of-the-art facilities and industry-leading experts, TTCI is a trusted partner for developing and testing new rail technologies and equipment.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

11 Patents

#2 in Pueblo, CO

#551 in Colorado

#26,694 in US

#50,190 in the World

Pueblo, CO, United States of America

Transportation Technology Center, Inc.

Forward Citations = 75

17 inventors:

Daniel Hunter Stone (4 out of 4 patents)

Alan Lee Polivka (2 out of 2 patents)

Jerome J Malone, Jr (2 out of 2 patents)

4. Francisco C Robles Hernandez (2 out of 2 patents)

5. Mark A Dembosky (2 out of 3 patents)

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