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TX, United States of America

Nl Industries

USPTO Granted Patents = 319

CIPO Patents = 3

Trademarks = 55

Forward Citations = 6,666

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279 inventors (with patents filed for the assignee):

Claude M Finlayson (15 out of 15 patents)

Roy F House (12 out of 48 patents)

Lonnie D Hoover (12 out of 13 patents)

4. John D Barr (11 out of 40 patents)

5. Thaddeus F Kroplinski (11 out of 11 patents)

6. George S Foerster (9 out of 9 patents)

7. Douglas W Nayler (9 out of 9 patents)

8. Daniel F Herman (8 out of 9 patents)

9. Melvin Brauer (8 out of 31 patents)

10. M Vikram Rao (7 out of 28 patents)

11. John E Fontenot (7 out of 8 patents)

12. Michael King Russell (6 out of 29 patents)

13. George E Stridde (6 out of 6 patents)

14. Joseph A Rahm (6 out of 6 patents)

15. Wilbur S Mardis (6 out of 6 patents)

Core Competencies:

Battery Waste Processing

Lead Contamination Control

High Shear Mixing Apparatus

Drilling Trajectory Prediction

Electromagnetic Logging

Blowout Preventer Technology

Acoustic Logging Tools

Fluid Loss Measurement

Formation Density Logging

Rotary Motion Devices

Mercaptan Removal Processes

Downhole Communication Systems

319 patents: Sort by Forward Citations

1. 5248342 - Methods for processing battery waste and other lead-contaminated (1993-09-28),

2. 5205952 - Methods for controlling airborne dissemination of lead and (1993-04-27),

3. 5173277 - Methods for processing battery waste and other lead-contaminated (1992-12-22),

4. 4900159 - High shear mixing apparatus (1990-02-13),

5. 4867418 - Apparatus for increasing the load handling capability of support and (1989-09-19),

6. 4855870 - Assemblies for supporting electrical circuit boards within tubes (1989-08-08),

7. 4829176 - Logging apparatus and method (1989-05-09),

8. 4810459 - Method and apparatus for determining true formation porosity from (1989-03-07),

9. 4804051 - Method of predicting and controlling the drilling trajectory in (1989-02-14),

10. 4791797 - Density neutron self-consistent caliper (1988-12-20),

11. 4790393 - Valve for drilling fluid telemetry systems (1988-12-13),

12. 4785247 - Drill stem logging with electromagnetic waves and (1988-11-15),

13. 4770387 - Variable ram seal for blowout preventers (1988-09-13),

14. 4759256 - Tensioner recoil control apparatus (1988-07-26),

15. 4758371 - Process and composition for removal of mercaptans from gas streams (1988-07-19),

NL Industries is a diversified industrial company engaged in the manufacturing of chemicals, pigments, and titanium dioxide products. Founded in 1891, NL Industries operates through its two primary segments, Chemicals and Performance Pigments. The Chemicals segment produces and sells sulfuric acid, hydrochloric acid, and other chemicals for various industrial applications. The Performance Pigments segment manufactures and markets titanium dioxide pigments used in coatings, plastics, paper, and other consumer products. With their strong commitment to quality and innovation, NL Industries has established a prominent position in the chemical industry.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

319 Patents

#1 in undefined, TX

#78 in Texas

#1,334 in US

#2,742 in the World

TX, United States of America

Nl Industries

Forward Citations = 6,666

279 inventors:

Claude M Finlayson (15 out of 15 patents)

Roy F House (12 out of 48 patents)

Lonnie D Hoover (12 out of 13 patents)

4. John D Barr (11 out of 40 patents)

5. Thaddeus F Kroplinski (11 out of 11 patents)

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