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For the Inventor, By the Inventor

Big Spring, TX, United States of America

Permian Research Corporation

Calculating rank
USPTO Granted Patents = 12

Forward Citations = 135

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11 inventors (with patents filed for the assignee):

goldMedal Granville J Hahn (11 out of 29 patents)

silverMedal Marion Johnson (3 out of 8 patents)

bronzeMedal Sammy Kent Flud (2 out of 3 patents)

4.  Allen C Bailey (1 out of 1 patent)

5.  Richard D Antrim (1 out of 1 patent)

6.  Douglas J Horton (1 out of 1 patent)

7.  Richard L Abner, Jr (1 out of 1 patent)

8.  Raleigh N Rutledge (1 out of 20 patents)

9.  Ramiro V Ramoos (1 out of 1 patent)

10.  Ramiro V Ramos (1 out of 1 patent)

11.  Durward Rutledge (1 out of 1 patent)


12 patents:

1. 5200204 - Rotary extruder with integral auger feed assembly (1993-04-06),
2. 5045252 - Method and apparatus for controlling rotary extruder (1991-09-03),
3. 5033861 - Rotary extruder with internally heated rotor (1991-07-23),
4. 4990233 - Method for retarding mineral buildup in downhole pumps (1991-02-05),
5. 4974336 - Drying method (1990-12-04),
6. 4887907 - Rotary extruder with internally cooled rotor (1989-12-19),
7. 4879138 - Composition for plastic article with unitarily molded foam layer (1989-11-07),
8. 4872573 - Plastic closure with barrier coating (1989-10-10),
9. 4866100 - Composition for plastic article with unitarily molded foam layer (1989-09-12),
10. 4839969 - Drying method and apparatus (1989-06-20),
11. 4813863 - Rotary extruder with a gear pump (1989-03-21),
12. 4744478 - Plastic closure with unitarily molded, foamed sealing layer (1988-05-17),
Company Overview
Permian Research Corporation, based in Big Spring, Texas, specializes in advanced technologies and innovative solutions primarily for the energy sector. The company focuses on research and development in areas such as oil and gas exploration, production optimization, and environmental sustainability. By leveraging cutting-edge methodologies and engineering expertise, Permian Research aims to enhance operational efficiency and reduce environmental impact, contributing to the evolution of energy practices in the region and beyond.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 3 2026

12 Patents

#1 in Big Spring, TX

#1,600 in Texas

#25,614 in US

#48,276 in the World

Big Spring, TX (US)
Big Spring, TX, United States of America

Permian Research Corporation

Forward Citations = 135

11 inventors:

goldMedal Granville J Hahn (11 out of 29 patents)

silverMedal Marion Johnson (3 out of 8 patents)

bronzeMedal Sammy Kent Flud (2 out of 3 patents)

4.  Allen C Bailey (1 out of 1 patent)

5.  Richard D Antrim (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Permian Research Corporation. Retrieved from https://idiyas.com/company/permian-research

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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