For the Inventor, By the Inventor

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Salt Lake City, UT, United States of America

Christensen, Inc.

USPTO Granted Patents = 48

Forward Citations = 1,903

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33 inventors (with patents filed for the assignee):

Rainer Jurgens (18 out of 35 patents)

James T Aumann (7 out of 15 patents)

David S Rowley (5 out of 5 patents)

4. Coy M Fielder (4 out of 4 patents)

5. Rainer Juergens (3 out of 8 patents)

6. Alfred Ostertag (2 out of 17 patents)

7. Craig R Hyland (2 out of 12 patents)

8. John S Davis (2 out of 4 patents)

9. Heino J Rohde (2 out of 2 patents)

10. Bruce H Walker (2 out of 3 patents)

11. Hermann Rathkamp (2 out of 2 patents)

12. Kenneth A Brock (2 out of 2 patents)

13. Cornelius Phaal (2 out of 2 patents)

14. Richard H Grappendorf (2 out of 6 patents)

15. Jacob T Chow (1 out of 6 patents)

Core Competencies:

Cutting Elements

Rotary Drill Bits

Coring Device

Telemetry Equipment

Downhole Motors

Drill String Stabilizers

Pressure Core Barrel

Shock Absorbers

Earth-Boring Drill Bits

Drilling Tools

Composite Drill Collars

Hydraulic Jars

48 patents: Sort by Forward Citations

1. 4537097 - Method and apparatus for manufacturing cutting elements particularly for (1985-08-27),

2. 4515227 - Nozzle placement in a diamond rotating bit including a pilot bit (1985-05-07),

3. 4512426 - Rotating bits including a plurality of types of preferential cutting (1985-04-23),

4. 4512425 - Up-drill sub for use in rotary drilling (1985-04-23),

5. 4512423 - Coring device with an improved weighted core sleeve and anti-gripping (1985-04-23),

6. 4512419 - Coring device with an improved core sleeve and anti-gripping collar (1985-04-23),

7. 4499959 - Tooth configuration for an earth boring bit (1985-02-19),

8. 4499563 - Apparatus for transmitting data from a borehole to the surface of the (1985-02-12),

9. 4471845 - Rotary drill bit (1984-09-18),

10. 4468762 - Telemetry equipment in modules (1984-08-28),

11. 4463815 - Mechanical jarring tool (1984-08-07),

12. 4460053 - Drill tool for deep wells (1984-07-17),

13. 4452324 - Rotary drill bit (1984-06-05),

14. 4452322 - Drilling device for drilling a core in deep drill holes (1984-06-05),

15. 4440246 - Cutting member for rotary drill bits (1984-04-03),

Christensen, Inc. is a leading technology solutions provider specializing in software development, IT consulting, and digital transformation. With years of industry experience, we help businesses improve their efficiency, productivity, and overall performance through innovative technology solutions. Our team of skilled professionals delivers robust software applications, cloud computing solutions, and bespoke IT services tailored to the unique needs of each client. Visit our website to learn more about our offerings and how we can drive your business forward.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

48 Patents

#26 in Salt Lake City, UT

#79 in Utah

#7,026 in US

#14,122 in the World

Salt Lake City, UT, United States of America

Christensen, Inc.

Forward Citations = 1,903

33 inventors:

Rainer Jurgens (18 out of 35 patents)

James T Aumann (7 out of 15 patents)

David S Rowley (5 out of 5 patents)

4. Coy M Fielder (4 out of 4 patents)

5. Rainer Juergens (3 out of 8 patents)

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