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For the Inventor, By the Inventor

Dallas, TX, United States of America

Trn Business Trust


USPTO Granted Patents = 81

Trademarks = 10

Forward Citations = 1,460

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66 inventors (with patents filed for the assignee):

goldMedal Stephen W Smith (15 out of 28 patents)

silverMedal John W Coulborn (9 out of 12 patents)

bronzeMedal Mell R Thoman (8 out of 10 patents)

4.  George S Creighton (7 out of 23 patents)

5.  Sherlock K Pippins (6 out of 13 patents)

6.  Allen E Norton (6 out of 6 patents)

7.  Robert J Barry (5 out of 13 patents)

8.  Robert J Cencer (5 out of 22 patents)

9.  James R Albritton (5 out of 19 patents)

10.  Alex K Hoover (5 out of 5 patents)

11.  D Bruce Fetterman (4 out of 11 patents)

12.  Robert J Recupido (4 out of 7 patents)

13.  Maurice E Bronstad (4 out of 6 patents)

14.  Ronald J Zupancich (4 out of 4 patents)

15.  Charles D Womack (4 out of 4 patents)


Core Competencies:
Railcar Discharge Control
Cable Anchor Bracket
Temperature Controlled Railway Car
Energy Absorbing Devices
Railway Hopper Car
Excavation Equipment Coupling
Load Restraint System
Security Device for Tank Discharge
Breakaway Support Post
Center Beam Car
Digital Conversion Adapter
Electro-Optic Sensor

81 patents:

1. 7681507 - Railcar with discharge control system (2010-03-23),
2. 7516945 - Cable anchor bracket (2009-04-14),
3. 7243908 - Cable anchor bracket (2007-07-17),
4. 7210413 - Universal boxcar (2007-05-01),
5. 7080598 - Railway hopper car with longitudinal discharge openings (2006-07-25),
6. 7059590 - Impact assembly for an energy absorbing device (2006-06-13),
7. 7051661 - Railcar with discharge control system (2006-05-30),
8. 7036249 - Tooth adapter having an elastomeric clamp assembly and method for using same (2006-05-02),
9. 7032334 - System and method for coupling excavation equipment components (2006-04-25),
10. 7004080 - Boxcar with load restraint system (2006-02-28),
11. 6962328 - Cable safety system (2005-11-08),
12. 6941875 - Temperature controlled railway car (2005-09-13),
13. 6935245 - Railway car for transporting semi-trucks (2005-08-30),
14. 6910427 - Security device and method to prevent unauthorized discharge of contents from a tank (2005-06-28),
15. 6904848 - Roof assembly and airflow management system for a temperature controlled railway car (2005-06-14),
TRN Business Trust is a reliable and innovative business consulting firm. We provide a wide range of services, including strategic planning, financial analysis, and market research. With a team of experienced professionals, we assist companies in optimizing their operations and achieving long-term growth. Our client-centric approach ensures personalized solutions tailored to meet the specific needs of each organization. Visit our website to learn more about our services and how we can help your business thrive.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Jan 6 2026

81 Patents

#23 in Dallas, TX

#249 in Texas

#4,424 in US

#9,095 in the World

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Dallas, TX, United States of America

Trn Business Trust

Forward Citations = 1,460

66 inventors:

goldMedal Stephen W Smith (15 out of 28 patents)

silverMedal John W Coulborn (9 out of 12 patents)

bronzeMedal Mell R Thoman (8 out of 10 patents)

4.  George S Creighton (7 out of 23 patents)

5.  Sherlock K Pippins (6 out of 13 patents)

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