For the Inventor, By the Inventor

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Tulsa, OK, United States of America

T. D. Williamson, Inc.

USPTO Granted Patents = 18

Trademarks = 23

Forward Citations = 300

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18 inventors (with patents filed for the assignee):

Larry D Payne (3 out of 4 patents)

Gene R Ralls (3 out of 9 patents)

Burton Ver Nooy (3 out of 3 patents)

4. James B Sullivan (2 out of 40 patents)

5. Hyun J Cho (2 out of 4 patents)

6. Buddy A Wilson (1 out of 6 patents)

7. Jack D Lollis (1 out of 2 patents)

8. Dennis R Smith (1 out of 5 patents)

9. David J Hicks (1 out of 4 patents)

10. Jeffrey S Rosenberg (1 out of 7 patents)

11. Kevin W Lockyear (1 out of 2 patents)

12. William J Rankin (1 out of 3 patents)

13. Robert L Kendall (1 out of 1 patent)

14. Kishor N Mehta (1 out of 1 patent)

15. Hershel Vanzant (1 out of 1 patent)

18 patents: Sort by Forward Citations

1. 4953412 - Pipeline caliper pig (1990-09-04),

2. 4797239 - Foam pig with textured surface (1989-01-10),

3. 4780962 - Pipeline bend verification pig (1988-11-01),

4. 4720884 - Cleaning pig with debris flushing action (1988-01-26),

5. 4693278 - Safety closure member (1987-09-15),

6. 4609209 - Precise alignment adapter flange (1986-09-02),

7. 4596204 - Flag-type pig-sig (1986-06-24),

8. 4579484 - Underwater tapping machine (1986-04-01),

9. 4522063 - Methods and apparatus for indicating selected physical parameters in a (1985-06-11),

10. 4515287 - Pressure activated closure lock (1985-05-07),

11. 4466550 - Closure for a cylindrical opening having improved venting means (1984-08-21),

12. 4457073 - Pipeline pig having improved means of sensing changes in the internal (1984-07-03),

13. 4413370 - Unitary pig for use in a pipeline (1983-11-08),

14. 4411459 - Branch fitting for providing access to the interior of a pipe (1983-10-25),

15. 4387740 - Cam-flange (1983-06-14),

T. D. Williamson, Inc. is a leading provider of pipeline services and equipment, specializing in solutions for the oil and gas industry. The company focuses on developing technologies for pipeline integrity, maintenance, and rehabilitation, ensuring safe and efficient operations. With a strong presence in the global market, T. D. Williamson is dedicated to advancing industry standards through innovative engineering and comprehensive service offerings, supporting clients in maintaining the integrity of their pipeline systems.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

18 Patents

#36 in Tulsa, OK

#86 in Oklahoma

#17,933 in US

#34,146 in the World

Tulsa, OK, United States of America

T. D. Williamson, Inc.

Forward Citations = 300

18 inventors:

Larry D Payne (3 out of 4 patents)

Gene R Ralls (3 out of 9 patents)

Burton Ver Nooy (3 out of 3 patents)

4. James B Sullivan (2 out of 40 patents)

5. Hyun J Cho (2 out of 4 patents)

Please report any incorrect information to [email protected]

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