For the Inventor, By the Inventor

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Houston, TX, United States of America

Rival Downhole Tools Lc

USPTO Granted Patents = 11

% Expired Patents = 9.1

CIPO Patents = 1

EPO Patents = 7

Trademarks = 3

Forward Citations = 25

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13 inventors (with patents filed for the assignee):

Gunther H H Von Gynz-Rekowski (8 out of 35 patents)

William Christian Herben (6 out of 15 patents)

Mark Allen Reeves (4 out of 10 patents)

4. Russell Wayne Koenig (3 out of 16 patents)

5. Steven Samuel Mitchell (3 out of 3 patents)

6. Gunther Von Gynz-Rekowski (3 out of 22 patents)

7. Kevin James Rudy (2 out of 13 patents)

8. Michael V Williams (1 out of 28 patents)

9. Mark Joshua Miller (1 out of 4 patents)

10. Donald M Sawyer (1 out of 4 patents)

11. Roger W Fincher (1 out of 51 patents)

12. Noah Elaia Crawford Daoust (1 out of 1 patent)

13. Curtis E Leitko, Jr (1 out of 11 patents)

14. Daryl Elliot Bolejack (2 patents)

15. Curtis E Leitko (0 patent)

11 patents: Sort by Forward Citations

1. 12565816 - Selectively activated friction reduction tool and method (2026-03-03),

2. 12305481 - Selectively activated friction reduction tool and method (2025-05-20),

3. 12173566 - Oscillation reduction tool and method (2024-12-24),

4. 11713622 - Method of drilling a wellbore (2023-08-01),

5. 11149497 - Drilling motor with bypass and method (2021-10-19),

6. 11008809 - Bent housing drilling motor with counter-rotating lower end (2021-05-18),

7. 10851589 - Integrated bearing section and method (2020-12-01),

8. 10844662 - Mud-lubricated bearing assembly with lower seal (2020-11-24),

9. 10829993 - Wear resistant vibration assembly and method (2020-11-10),

10. 10677006 - Vibration assembly and method (2020-06-09),

11. 10408007 - Downhole extended reach tool and method (2019-09-10),

Rival Downhole Tools Lc is a leading provider of downhole drilling tools for the oil and gas industry. With a focus on innovation and quality, we offer a wide range of products designed to improve drilling efficiency and productivity. Our experienced team is dedicated to providing reliable solutions to our customers' needs, helping them achieve their drilling goals safely and efficiently. Visit our website to learn more about our products and services.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

11 Patents

#442 in Houston, TX

#1,720 in Texas

#27,470 in US

#51,671 in the World

Houston, TX, United States of America

Rival Downhole Tools Lc

Forward Citations = 25

13 inventors:

Gunther H H Von Gynz-Rekowski (8 out of 35 patents)

William Christian Herben (6 out of 15 patents)

Mark Allen Reeves (4 out of 10 patents)

4. Russell Wayne Koenig (3 out of 16 patents)

5. Steven Samuel Mitchell (3 out of 3 patents)

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