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For the Inventor, By the Inventor

Tulsa, OK, United States of America

T. D. Williamson, Inc.

Calculating rank
USPTO Granted Patents = 18

Trademarks = 23

Forward Citations = 300

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18 inventors (with patents filed for the assignee):

goldMedal Larry D Payne (3 out of 4 patents)

silverMedal Gene R Ralls (3 out of 9 patents)

bronzeMedal 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:

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),
Company Overview
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 synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

18 Patents

#36 in Tulsa, OK

#86 in Oklahoma

#17,974 in US

#34,244 in the World

Tulsa, OK (US)
Tulsa, OK, United States of America

T. D. Williamson, Inc.

Forward Citations = 300

18 inventors:

goldMedal Larry D Payne (3 out of 4 patents)

silverMedal Gene R Ralls (3 out of 9 patents)

bronzeMedal 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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: T. D. Williamson, Inc.. Retrieved from https://idiyas.com/company/t-d-williamson

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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