For the Inventor, By the Inventor

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Houston, TX, United States of America

Oil States Energy Services, Llc.

USPTO Granted Patents = 46

CIPO Patents = 8

Forward Citations = 488

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23 inventors (with patents filed for the assignee):

Bob McGuire (39 out of 94 patents)

Danny Lee Artherholt (28 out of 45 patents)

Mickey Claxton (16 out of 17 patents)

4. Blake Mullins (15 out of 18 patents)

5. Richard Brian Sizemore (6 out of 6 patents)

6. Nicholas J Cannon (4 out of 26 patents)

7. Charles Beedy (4 out of 4 patents)

8. Nicholas Langston (4 out of 4 patents)

9. Ronald B Beason (4 out of 4 patents)

10. L Murray Dallas (4 out of 84 patents)

11. Joel H Young (3 out of 14 patents)

12. Darin Grassmann (3 out of 3 patents)

13. Jimmy Livingston (3 out of 4 patents)

14. Brodey W Davis (2 out of 2 patents)

15. Jay C Robinson (2 out of 2 patents)

Core Competencies:

Mag Sense Tool

Pressure Differential Valve

Flowback Tank Cleaning

Frac Manifold Isolation Tool

Wellhead Isolation Tool

Ball Drop Control Apparatus

Modular Ball Drop

Horizontal Frac Ball Injector

Erosion Resistant Frac Head

Quick-Change Wear Sleeve

Hybrid Wellhead System

Metal Ring Gasket

46 patents: Sort by Forward Citations

1. 12339140 - Mag sense tool (2025-06-24),

2. 12287039 - Valve with pressure differential seating (2025-04-29),

3. 12259064 - Valve with pressure differential seating (2025-03-25),

4. 11969769 - Flowback tank cleaning system and method (2024-04-30),

5. 11725738 - Valve assembly method (2023-08-15),

6. 11655900 - Valve with pressure differential seating (2023-05-23),

7. 11585199 - Frac manifold isolation tool (2023-02-21),

8. 11428088 - Frac manifold isolation tool (2022-08-30),

9. 11280147 - Mandrel head for wellhead isolation tool and method of use (2022-03-22),

10. 11214455 - Extendable spool (2022-01-04),

11. 11168528 - Universal atmospheric deployment device (2021-11-09),

12. 11167324 - Flowback tank cleaning system and method (2021-11-09),

13. 11091993 - Zipper bridge (2021-08-17),

14. 11028929 - Valve with pressure differential seating (2021-06-08),

15. 10969023 - Valve with pressure differential seating (2021-04-06),

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

46 Patents

#122 in Houston, TX

#413 in Texas

#7,330 in US

#14,675 in the World

Houston, TX, United States of America

Oil States Energy Services, Llc.

Forward Citations = 488

23 inventors:

Bob McGuire (39 out of 94 patents)

Danny Lee Artherholt (28 out of 45 patents)

Mickey Claxton (16 out of 17 patents)

4. Blake Mullins (15 out of 18 patents)

5. Richard Brian Sizemore (6 out of 6 patents)

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