For the Inventor, By the Inventor

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Fort Worth, TX, United States of America

Gearhart-owen Industries, Inc.

USPTO Granted Patents = 13

Forward Citations = 462

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14 inventors (with patents filed for the assignee):

Bobby J Hallmark (5 out of 11 patents)

David W King (4 out of 5 patents)

James Douglas Young (2 out of 2 patents)

4. Marvin Gearhart (1 out of 2 patents)

5. Harrold D Owen, Sr (1 out of 9 patents)

6. Emmet F Brieger (1 out of 26 patents)

7. Serge A Scherbatskoy (1 out of 18 patents)

8. Rudolph R Mendoza (1 out of 1 patent)

9. Robert Lee Roper (1 out of 1 patent)

10. J C Smith (1 out of 1 patent)

11. Robert K Pipes (1 out of 1 patent)

12. Emmitt Edward Rankin (1 out of 1 patent)

13. Emmitt Edward Rankin (1 out of 1 patent)

14. Burnard M Kirkpatrick (1 out of 1 patent)

13 patents: Sort by Forward Citations

1. 4270385 - Tool for testing earth formations in boreholes (1981-06-02),

2. 4248081 - Tool for testing earth formations in boreholes (1981-02-03),

3. 4246782 - Tool for testing earth formations in boreholes (1981-01-27),

4. 4210018 - Formation testers (1980-07-01),

5. 4164886 - Sealing projectile (1979-08-21),

6. 4150386 - Apparatus for dispensing and advancing the recording or plotting medium (1979-04-17),

7. 4124070 - Wireline shifting tool apparatus and methods (1978-11-07),

8. 4108243 - Apparatus for testing earth formations (1978-08-22),

9. 4094359 - Apparatus and methods for testing earth formations (1978-06-13),

10. 4089381 - Chamber isolator and sealing means for borehole perforating tools (1978-05-16),

11. 4083401 - Apparatus and methods for testing earth formations (1978-04-11),

12. 3964556 - Downhole signaling system (1976-06-22),

13. 3948321 - Liner and reinforcing swage for conduit in a wellbore and method and (1976-04-06),

Gearhart-Owen Industries, Inc. is a leading manufacturing company specializing in creating high-quality industrial equipment for various industries. With a focus on innovation and customer satisfaction, we deliver reliable and durable products that exceed expectations. Our team of experts is committed to providing superior solutions for our clients' needs.

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

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USPTO Data Jan 1 1976 - Dec 16 2025

13 Patents

#62 in Fort Worth, TX

#1,451 in Texas

#23,111 in US

#43,639 in the World

Fort Worth, TX, United States of America

Gearhart-owen Industries, Inc.

Forward Citations = 462

14 inventors:

Bobby J Hallmark (5 out of 11 patents)

David W King (4 out of 5 patents)

James Douglas Young (2 out of 2 patents)

4. Marvin Gearhart (1 out of 2 patents)

5. Harrold D Owen, Sr (1 out of 9 patents)

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