Forward Citations = 139

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9 inventors (with patents filed for the assignee):

Alfred Ostertag (1 out of 17 patents)

Craig R Hyland (1 out of 12 patents)

Gordon A Tibbitts (1 out of 78 patents)

4. Oleg M Kotlyar (1 out of 13 patents)

5. Volker Kruger (1 out of 10 patents)

6. Steven R Radford (1 out of 10 patents)

7. Ulrich Hense (1 out of 2 patents)

8. Robert E Iversen (1 out of 1 patent)

9. Kenneth D Enever (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 4883132 - Drag bit for drilling in plastic formation with maximum chip clearance (1989-11-28),

2. 4878548 - Nozzle retention system for a drill bit (1989-11-07),

3. 4771408 - Universal mud pulse telemetry system (1988-09-13),

4. 4698794 - Device for remote transmission of information (1987-10-06),

Eastman Christensen is a leading manufacturer of downhole drilling tools and solutions for the oil and gas industry. With a focus on safety, efficiency, and reliability, Eastman Christensen offers a wide range of products and services to help companies optimize their drilling operations. Visit their website to learn more about their innovative solutions and exceptional customer service.

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

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USPTO Data Jan 1 1976 - Dec 30 2025

4 Patents

#283 in Salt Lake City, UT

#749 in Utah

#59,049 in US

Salt Lake City, UT, United States of America

Eastman Christensen