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Pittsburgh, PA, United States of America

Occidental Petroleum

USPTO Granted Patents = 101

Trademarks = 14

Forward Citations = 2,524

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68 inventors (with patents filed for the assignee):

Charles K Choi (13 out of 14 patents)

Norman W Green (10 out of 12 patents)

Booker W Morey (8 out of 11 patents)

4. Fernando N Ore (7 out of 9 patents)

5. Richard D Ridley (6 out of 25 patents)

6. Kandaswamy Duraiswamy (6 out of 6 patents)

7. Allan S Sass (6 out of 10 patents)

8. Robert S Burton, Iii (5 out of 24 patents)

9. Joseph P Tassoney (5 out of 6 patents)

10. Edward F Wahl, Iii (5 out of 7 patents)

11. Robert E Lumpkin (5 out of 5 patents)

12. Samuel G Woinsky (5 out of 6 patents)

13. Donald E Garrett (4 out of 8 patents)

14. Richard M Gundzik (4 out of 4 patents)

15. Chang Y Cha (4 out of 43 patents)

Core Competencies:

Phenolic Resins

Water-in-Oil Emulsion

Phosphoric Acid Production

Geothermal Energy

Coal Gasification

Pyrolysis Reactor

Hydrocarbon Recovery

Energy Recovery

Surgical Embryo Transplants

Flotation Separation

Wave Powered Energy

Solid Waste Disposal

101 patents: Sort by Forward Citations

1. 6828383 - Phenolic modified resorcinolic resins for rubber compounding (2004-12-07),

2. 4646771 - One-step system for transforming a water-in-oil emulsion into an (1987-03-03),

3. 4627458 - One-step process for transforming a water-in-oil emulsion into an (1986-12-09),

4. 4592901 - Method of removing suspended solids from phosphoric acid (1986-06-03),

5. 4426280 - Process for removing nitrogen from shale oil (1984-01-17),

6. 4358344 - Process for the production and recovery of fuel values from coal (1982-11-09),

7. 4357802 - Geothermal energy production (1982-11-09),

8. 4341077 - Process and system for recovery of energy from geothermal brines and (1982-07-27),

9. 4334959 - Mixing method and apparatus (1982-06-15),

10. 4326505 - Surgical procedure for embryo transplants on animals (1982-04-27),

11. 4324102 - Process and system for recovery of energy from geothermal brines and (1982-04-13),

12. 4322222 - Process for the gasification of carbonaceous materials (1982-03-30),

13. 4284614 - Process for production of high purity phosphoric acid from high alumina (1981-08-18),

14. 4277448 - Phosphoric acid process with high circulation rates (1981-07-07),

15. 4276748 - Recovery of energy from geothermal brine and other hot water sources (1981-07-07),

Occidental Petroleum Corporation is an international oil and gas exploration and production company. It operates in the United States, Middle East, and Latin America. Occidental is one of the largest oil producers in the United States and focuses on developing low-carbon technologies to reduce environmental impact.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

101 Patents

#22 in Pittsburgh, PA

#139 in Pennsylvania

#3,612 in US

#7,485 in the World

Pittsburgh, PA, United States of America

Occidental Petroleum

Forward Citations = 2,524

68 inventors:

Charles K Choi (13 out of 14 patents)

Norman W Green (10 out of 12 patents)

Booker W Morey (8 out of 11 patents)

4. Fernando N Ore (7 out of 9 patents)

5. Richard D Ridley (6 out of 25 patents)

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