For the Inventor, By the Inventor

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Salt Lake City, UT, United States of America

Norton Christensen, Inc.

USPTO Granted Patents = 37

Forward Citations = 756

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45 inventors (with patents filed for the assignee):

Steven R Radford (8 out of 10 patents)

Rainer Jurgens (5 out of 35 patents)

J Stanley Davis (4 out of 5 patents)

4. Craig R Hyland (3 out of 12 patents)

5. James T Aumann (2 out of 15 patents)

6. Clifford R Pay (2 out of 5 patents)

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

8. Larry R Fulkerson (2 out of 2 patents)

9. Thomas Jung (2 out of 2 patents)

10. Gerhard Heidemann (2 out of 2 patents)

11. Hans-Eckhard Mengel (2 out of 2 patents)

12. Kelly Knighton (2 out of 2 patents)

13. Lorenzo G Lovato (1 out of 6 patents)

14. Lawrence Frear (1 out of 2 patents)

15. John S Davis (1 out of 4 patents)

37 patents: Sort by Forward Citations

1. 4904228 - Universal ball joint (1990-02-27),

2. 4732225 - Deep-borehole drilling device with magnetic coupling (1988-03-22),

3. 4664205 - Hydraulic inner barrel in a drill string coring tool (1987-05-12),

4. 4643265 - Core barrel apparatus for disposing a core within a thin, flexible film (1987-02-17),

5. 4641289 - Process and device for transmitting information over a distance (1987-02-03),

6. 4635738 - Drill bit (1987-01-13),

7. 4629013 - Drive device for a drill bit (1986-12-16),

8. 4614232 - Device for delivering flowable material (1986-09-30),

9. 4608226 - Method of forming a diamond tooth insert for a drill bit and a diamond (1986-08-26),

10. 4607710 - Cammed and shrouded core catcher (1986-08-26),

11. 4606416 - Self activating, positively driven concealed core catcher (1986-08-19),

12. 4605075 - Shrouded core catcher (1986-08-12),

13. 4603749 - Apparatus for downward displacement of an inner tube within a coring (1986-08-05),

14. 4586574 - Cutter configuration for a gage-to-shoulder transition and face pattern (1986-05-06),

15. 4580643 - Adjustable bearing section core barrel (1986-04-08),

Norton Christensen, Inc. is a leading global provider of innovative solutions for the manufacturing industry. With over 50 years of experience, we specialize in designing and manufacturing high-quality machinery and equipment for various sectors including automotive, aerospace, and electronics. Our cutting-edge technology and exceptional customer service have allowed us to establish long-term partnerships with some of the world's largest corporations. Visit our website to learn more about our products and services.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

37 Patents

#37 in Salt Lake City, UT

#97 in Utah

#8,955 in US

#17,736 in the World

Salt Lake City, UT, United States of America

Norton Christensen, Inc.

Forward Citations = 756

45 inventors:

Steven R Radford (8 out of 10 patents)

Rainer Jurgens (5 out of 35 patents)

J Stanley Davis (4 out of 5 patents)

4. Craig R Hyland (3 out of 12 patents)

5. James T Aumann (2 out of 15 patents)

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