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For the Inventor, By the Inventor

Houston, TX, United States of America

National Oilwell, Inc.


USPTO Granted Patents = 68



Trademarks = 22

Forward Citations = 1,469

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90 inventors (with patents filed for the assignee):

goldMedal Jaroslav Belik (6 out of 29 patents)

silverMedal Lopek Drzewiecki (4 out of 7 patents)

bronzeMedal Calvin Ronald Blankenship (3 out of 7 patents)

4.  James Cirone (3 out of 5 patents)

5.  Jay D Furnish (3 out of 4 patents)

6.  Michael R Zemanek (3 out of 4 patents)

7.  Jeff A Lambert (3 out of 4 patents)

8.  Kenneth L Cambern (3 out of 3 patents)

9.  Joel M Ferland (3 out of 3 patents)

10.  Donald W Johnson (3 out of 3 patents)

11.  Michael C Dinsdale (3 out of 13 patents)

12.  James C Aday (3 out of 3 patents)

13.  James Robert Streater (3 out of 16 patents)

14.  James Cavitt Garrett (3 out of 4 patents)

15.  William S Cowan (3 out of 14 patents)


Core Competencies:
Piston Rod Retention System
Positive Displacement Motor
Automated Drilling Tools
Centrifugal Pump Bearing
Pipe Racking System
BOP Handling System
Hydraulic Spooler
Mobile Workover Rig
Power Slip Assembly
Inline Compensator
Casing Suspension System
Valve Flow Control

68 patents:

1. 8186900 - Piston rod retention system (2012-05-29),
2. 8006751 - Automated system for positioning and supporting the work platform of a mobile workover and well-servicing rig (2011-08-30),
3. 7828533 - Positive displacement motor/progressive cavity pump (2010-11-09),
4. 7765749 - Fast moving drilling rig (2010-08-03),
5. 7546869 - Automated system for positioning and supporting the work platform of a mobile workover and well-servicing rig (2009-06-16),
6. 7523792 - Method and apparatus for shifting speeds in a fluid-actuated motor (2009-04-28),
7. 7523694 - Cylinder liner preload system (2009-04-28),
8. 7461700 - Apparatus and method for a C-plate used in a cable guided fishing assembly (2008-12-09),
9. 7455128 - Automated arm for positioning of drilling tools such as an iron roughneck (2008-11-25),
10. 7345396 - Metallic laminations for magnetic circuits (2008-03-18),
11. 7296640 - Solids control system (2007-11-20),
12. 7293618 - Power slip for drillpipe (2007-11-13),
13. 7293607 - Automated system for positioning and supporting the work platform of a mobile workover and well-servicing rig (2007-11-13),
14. 7249639 - Automated arm for positioning of drilling tools such as an iron roughneck (2007-07-31),
15. 7246983 - Pipe racking system (2007-07-24),
National Oilwell, Inc. is a leading provider of equipment and components for oil and gas drilling operations worldwide. With a rich history dating back to 1862, the company offers a comprehensive range of products and services including drilling equipment, wellbore systems, artificial lift systems, and more. National Oilwell is committed to innovation and delivering high-quality solutions to the global energy industry. Visit their website to learn more about their diverse product portfolio and industry expertise.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

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68 Patents

#94 in Houston, TX

#303 in Texas

#5,191 in US

#10,595 in the World

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Houston, TX, United States of America

National Oilwell, Inc.

Forward Citations = 1,469

90 inventors:

goldMedal Jaroslav Belik (6 out of 29 patents)

silverMedal Lopek Drzewiecki (4 out of 7 patents)

bronzeMedal Calvin Ronald Blankenship (3 out of 7 patents)

4.  James Cirone (3 out of 5 patents)

5.  Jay D Furnish (3 out of 4 patents)

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