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Conroe, TX, United States of America

National Oilwell Dht, L.p.

Calculating rank

USPTO Granted Patents = 63

% Expired Patents = 22.2

CIPO Patents = 8

EPO Patents = 18

Trademarks = 7

Forward Citations = 258

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93 inventors (with patents filed for the assignee):

Reza Rahmani (7 out of 12 patents)

Russell C Gilleylen (7 out of 13 patents)

Jeffery Ronald Clausen (7 out of 29 patents)

4. Jiinjen Albert Sue (6 out of 18 patents)

5. Harold Sreshta (6 out of 20 patents)

6. Michael D Hughes (6 out of 6 patents)

7. Nicholas Ryan Marchand (5 out of 32 patents)

8. Guodong Zhan (5 out of 16 patents)

9. Kevin William Clark (5 out of 8 patents)

10. Navid Omidvar (4 out of 6 patents)

11. Thang Vo (4 out of 6 patents)

12. C Steven Isaacks (4 out of 5 patents)

13. Anil Kumar (3 out of 194 patents)

14. Alamzeb Hafeez Khan (3 out of 7 patents)

15. Gregory Edward Leuenberger (3 out of 6 patents)

Core Competencies:

Drill Bits

Cutting Elements

Downhole Sensors

Hybrid Drill Bits

Cementing Systems

Drilling Systems

Measurement While Drilling

Mud Motors

Oscillation Systems

Wear-Resistant Materials

Shock Tools

Polycrystalline Diamond

63 patents: Sort by Forward Citations

1. 12071818 - Mechanical attachment of cutting elements to an earth-boring bit (2024-08-27),

2. 12000235 - System and method for cementing a tubing (2024-06-04),

3. 11377911 - Fixed cutter drill bits including nozzles with end and side exits (2022-07-05),

4. 11225835 - Downhole adjustable bend assemblies (2022-01-18),

5. 11220869 - Drill bit inserts and drill bits including same (2022-01-11),

6. 11220866 - Drilling oscillation systems and shock tools for same (2022-01-11),

7. 11208849 - Drill bit cutter elements and drill bits including same (2021-12-28),

8. 11208846 - Drilling tool with non-synchronous oscillators and method of using same (2021-12-28),

9. 11181657 - Wellsite sensor assembly and method of using same (2021-11-23),

10. 11149498 - Wired downhole adjustable mud motors (2021-10-19),

11. 11085258 - Systems, methods, and computer-readable media to monitor and control well site drill cuttings transport (2021-08-10),

12. 11002099 - Valves for actuating downhole shock tools in connection with concentric drive systems (2021-05-11),

13. 10988988 - Drilling systems and hybrid drill bits for drilling in a subterranean formation and methods relating thereto (2021-04-27),

14. 10954722 - Fixed cutter drill bits including nozzles with end and side exits (2021-03-23),

15. 10906104 - Systems and methods of fabrication and use of wear-resistant materials (2021-02-02),

Company Overview

National Oilwell DHT, L.P. is a leading provider of downhole drilling technology, specializing in the development and manufacturing of advanced drilling solutions. The company focuses on a range of core technologies including drill bits, cutting elements, and downhole sensors, which enhance drilling efficiency and performance. Based in Conroe, Texas, National Oilwell DHT also innovates in hybrid drill bits, cementing systems, and measurement while drilling, contributing significantly to the oil and gas industry's operational capabilities.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

63 Patents

#1 in Conroe, TX

#318 in Texas

#5,767 in US

#11,640 in the World

Conroe, TX, United States of America

National Oilwell Dht, L.p.

Forward Citations = 258

93 inventors:

Reza Rahmani (7 out of 12 patents)

Russell C Gilleylen (7 out of 13 patents)

Jeffery Ronald Clausen (7 out of 29 patents)

4. Jiinjen Albert Sue (6 out of 18 patents)

5. Harold Sreshta (6 out of 20 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: National Oilwell Dht, L.p.. Retrieved from https://idiyas.com/company/national-oilwell-dht

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]

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