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For the Inventor, By the Inventor

Wilmington, DE, United States of America

Tdw Delaware, Inc.


USPTO Granted Patents = 121

% Expired Patents = 8.3



Forward Citations = 965

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135 inventors (with patents filed for the assignee):

goldMedal Roger L Poe (12 out of 27 patents)

silverMedal Eric N Freeman (10 out of 11 patents)

bronzeMedal William Jack Rankin (9 out of 9 patents)

4.  Tony R Garrison (7 out of 8 patents)

5.  Bill Dean Andrew (7 out of 8 patents)

6.  Joseph Alan Morton (6 out of 7 patents)

7.  Jeffrey S Rosenberg (6 out of 7 patents)

8.  Robert F Strong (5 out of 5 patents)

9.  Buddy A Wilson (5 out of 6 patents)

10.  Richard L Goswick (5 out of 8 patents)

11.  Rick D Pruett (5 out of 6 patents)

12.  Gene R Ralls (5 out of 9 patents)

13.  Charles Culver Gidden Cooper (4 out of 9 patents)

14.  Ed Maynard (4 out of 4 patents)

15.  Michael Wilson (4 out of 27 patents)


Core Competencies:
Pipeline Isolation
Sealing Elements
Inspection Tools
Pigging Applications
Completion Plugs
Hydrostatic Testing
Non-Destructive Testing
Polyethylene Pipe
Flow Control
Closure Devices
Signal Sensors
Welding Systems

121 patents:

1. 12729796 - Single or multi-durometer elastomer, self-actuating, dynamic, stress suppressor for hot tapping tools (2026-09-08),
2. 12379046 - Service tee with valve plug for isolation of side outlet (2025-08-05),
3. 12359762 - Pipeline isolation tool with large-gap sealing element having mini pressure heads and iris-like structural sealing elements (2025-07-15),
4. 12338934 - Activation system for pipeline plug (2025-06-24),
5. 12292151 - Gripper assembly for pipeline isolation tool and methods of use (2025-05-06),
6. 12264767 - Polyethylene pipe service system including quick connect means for polyethylene pipe tapping, plugging, and completion operations (2025-04-01),
7. 12104738 - Completion plug safety indicator and method for its use (2024-10-01),
8. 12092255 - Seal assembly for pipeline isolation tool and methods of use (2024-09-17),
9. 12038118 - Pipeline isolation tool with seal having adaptable mechanical support structure (2024-07-16),
10. 11873938 - Pressure-responsive, deformable, self-integrating pigging element for use in pipeline pigging applications (2024-01-16),
11. 11796114 - Isolation plug with energized seal (2023-10-24),
12. 11796106 - Polyethylene pipe service system including quick connect means for polyethylene pipe tapping, plugging, and completion operations (2023-10-24),
13. 11719341 - Vessel closure device with fail safe failure detection means (2023-08-08),
14. 11686408 - Non-invasive pipeline pig signal using vibration sensors (2023-06-27),
15. 11579118 - Single point contact triaxial sensor head for an inline inspection tool (2023-02-14),
Tdw Delaware, Inc., based in Wilmington, DE, specializes in advanced pipeline isolation tools designed for the oil and gas industry. The company focuses on developing innovative solutions that enhance the safety and efficiency of pipeline operations. Their core technologies include sealing elements, inspection tools, and completion plugs, which are essential for hydrostatic testing and non-destructive testing applications. Tdw Delaware, Inc. is committed to providing reliable products that support effective pipeline management and maintenance.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

121 Patents

#51 in Wilmington, DE

#64 in Delaware

#3,194 in US

#6,600 in the World

Wilmington, DE (US)
Wilmington, DE, United States of America

Tdw Delaware, Inc.

Forward Citations = 965

135 inventors:

goldMedal Roger L Poe (12 out of 27 patents)

silverMedal Eric N Freeman (10 out of 11 patents)

bronzeMedal William Jack Rankin (9 out of 9 patents)

4.  Tony R Garrison (7 out of 8 patents)

5.  Bill Dean Andrew (7 out of 8 patents)

Please report any incorrect information to [email protected]
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