Company Badge
USPTO Data Jan 1 1976 - Oct 13 2026
68 Patents
#91 in Houston, TX
#297 in Texas
#5,372 in US
#10,888 in the World
National Oilwell, Inc.
Forward Citations = 1,493
90 inventors:
Houston, TX, United States of America
National Oilwell, Inc.
% Expired Patents = 5.9
CIPO Patents = 20
EPO Patents = 5
Trademarks = 20
Forward Citations = 1,493
Loading Chart...
Loading Chart...
90 inventors (with patents filed for the assignee):
Jaroslav Belik (6 out of 29 patents)
Lopek Drzewiecki (4 out of 7 patents)
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
Automated Positioning
Positive Displacement Motor
Drilling Rig
Solids Control
Pipe Racking
Hydraulic Systems
BOP Handling
Centrifugal Pump
Well Servicing
Mobile Drilling Apparatus
Valve Technology
68 patents:
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),
Company Overview
National Oilwell, Inc. is a leading provider of drilling technology solutions, headquartered in Houston, Texas. The company specializes in the development and manufacturing of advanced equipment and systems for the oil and gas industry, focusing on enhancing drilling efficiency and safety. Key technological areas include piston rod retention, automated positioning, positive displacement motors, and hydraulic systems. National Oilwell is committed to innovation in drilling rig design, solids control, and BOP handling, supporting operations across various geographic regions.
Profile summary synthesized from public USPTO records and patent filings.
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: National Oilwell, Inc.. Retrieved from https://idiyas.com/company/national-oilwell
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
20 patents (CIPO):
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
5 patents (EPO):
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]