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Trademarks = 4

Forward Citations = 311

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7 inventors (with patents filed for the assignee):

Vern Arthur Hult (4 out of 11 patents)

Darryl A Bourgoyne (2 out of 7 patents)

Edward Leigh Schubert (2 out of 2 patents)

4. Curtis Christopher Blundell (2 out of 2 patents)

5. Don M Hannegan (1 out of 41 patents)

6. Tammy T Bourgoyne (1 out of 1 patent)

7. Adam T Bourgoyne, Jr (1 out of 3 patents)

6 patents: Sort by Forward Citations

1. 6263982 - Method and system for return of drilling fluid from a sealed marine riser to a floating drilling rig while drilling (2001-07-24),

2. 6138774 - Method and apparatus for drilling a borehole into a subsea abnormal pore (2000-10-31),

3. 6135740 - Pump drive head backspin retarder (2000-10-24),

4. 6125931 - Right angle drive adapter for use with a vertical drive head in an oil (2000-10-03),

5. 6113355 - Pump drive head pump assembly with a hydraulic pump circuit for (2000-09-05),

6. 6079489 - Centrifugal backspin retarder and drivehead for use therewith (2000-06-27),

Weatherford is a leading provider of equipment and services for the drilling, evaluation, completion, production, and intervention of oil and natural gas wells. With a global presence and innovative technology solutions, Weatherford helps customers optimize their operations and maximize recovery rates.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

6 Patents

#714 in Houston, TX

#2,843 in Texas

#43,794 in US

Houston, TX, United States of America

Weatherford Holding U.s., Inc.