For the Inventor, By the Inventor

Enter assignee name

Los Angeles, CA, United States of America

Atlantic Richfield Company

Calculating rank

USPTO Granted Patents = 1,851

CIPO Patents = 65

Trademarks = 34

Forward Citations = 37,210

Loading Chart...

Loading Chart...

1,175 inventors (with patents filed for the assignee):

Jin S Yoo (50 out of 69 patents)

John A Sofranko (45 out of 78 patents)

Lloyd A Baillie (40 out of 43 patents)

4. John J Leonard (33 out of 34 patents)

5. Thomas K Perkins (32 out of 34 patents)

6. Richard F Miller (30 out of 40 patents)

7. C Andrew Jones (30 out of 49 patents)

8. Emmett H Burk, Jr (30 out of 33 patents)

9. Tom P Airhart (29 out of 35 patents)

10. Barry D Dean (28 out of 38 patents)

11. Adolph V DiGiulio (23 out of 35 patents)

12. Haven S Kesling, Jr (22 out of 54 patents)

13. Miroslav M Kolpak (21 out of 21 patents)

14. Lee R Zehner (21 out of 22 patents)

15. Frank E Lowther (21 out of 54 patents)

Core Competencies:

Cement Slurry

NOx Conversion

Downhole Separation

Hydrocarbon Gas

Fracturing Method

Surfactant Composition

Gas Injection

Subterranean Formation

Wellbore Cleaning

Heavy Crude Oil

Seismic Inversion

Petroleum Optimization

1,851 patents: Sort by Forward Citations

1. 6566310 - Tandem spacer fluid system and method for positioning a cement slurry in a wellbore annulus (2003-05-20),

2. 6482762 - NOx conversion catalyst rejuvenation process (2002-11-19),

3. 6461497 - Reformulated reduced pollution diesel fuel (2002-10-08),

4. 6353988 - Method of installing a highly tensioned suspended pipeline (2002-03-12),

5. 6318480 - Drilling of laterals from a wellbore (2001-11-20),

6. 6283213 - Tandem spacer fluid system and method for positioning a cement slurry in a wellbore annulus (2001-09-04),

7. 6283204 - Oil and gas production with downhole separation and reinjection of gas (2001-09-04),

8. 6273192 - Method for strengthening a subterranean formation (2001-08-14),

9. 6273144 - Method for inhibiting external corrosion on an insulated pipeline (2001-08-14),

10. 6265355 - Gel-breaker composition and a method for breaking a gel (2001-07-24),

11. 6260619 - Oil and gas production with downhole separation and compression of gas (2001-07-17),

12. 6258332 - Apparatus and method for collecting and recycling a petroleum by-product (2001-07-10),

13. 6257331 - Downhole setting tool (2001-07-10),

14. 6250689 - Reinforced tube joint (2001-06-26),

15. 6248794 - Integrated process for converting hydrocarbon gas to liquids (2001-06-19),

Company Overview

Atlantic Richfield Company, headquartered in Los Angeles, CA, specializes in the oil and gas production sector. The company is engaged in developing innovative technologies related to cement slurry, NOx conversion, and downhole separation, enhancing efficiency and sustainability in hydrocarbon extraction. Its expertise extends to fracturing methods, surfactant compositions, and gas injection techniques, contributing to advancements in subterranean formation management. Atlantic Richfield is committed to optimizing resource recovery while addressing environmental considerations.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

1,851 Patents

#2 in Los Angeles, CA

#70 in California

#278 in US

#547 in the World

Los Angeles, CA, United States of America

Atlantic Richfield Company

Forward Citations = 37,210

1,175 inventors:

Jin S Yoo (50 out of 69 patents)

John A Sofranko (45 out of 78 patents)

Lloyd A Baillie (40 out of 43 patents)

4. John J Leonard (33 out of 34 patents)

5. Thomas K Perkins (32 out of 34 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Atlantic Richfield Company. Retrieved from https://idiyas.com/company/atlantic-richfield-company

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]

Loading…