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New York, NY, United States of America

Kennecott Copper Corporation

USPTO Granted Patents = 99

Forward Citations = 909

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85 inventors (with patents filed for the assignee):

J Paul Pemsler (12 out of 15 patents)

Alkis S Rappas (8 out of 18 patents)

David W Marshall (7 out of 9 patents)

4. Robert E Lueders (7 out of 9 patents)

5. John K Litchfield (5 out of 9 patents)

6. Roger N Kust (5 out of 5 patents)

7. Jagdish Chandra Agarwal (5 out of 5 patents)

8. Thomas C Wilder (5 out of 5 patents)

9. William R O'Day, Jr (5 out of 7 patents)

10. Paul R Ammann (5 out of 6 patents)

11. Ray V Huff (5 out of 6 patents)

12. Glenn M Cook (5 out of 7 patents)

13. Jonathan J Kim (4 out of 20 patents)

14. Chih-Chung Wang (4 out of 13 patents)

15. David L Natwig (4 out of 4 patents)

Core Competencies:

Copper Extraction

Solvent Extraction

Pyrometallurgical Processes

In-Situ Mining

Electrorefining

Composite Materials

Molybdenum Recovery

Nickel Recovery

Gas Sparging

Flotation Processes

Electrolytic Treatment

Hydrometallurgy

99 patents: Sort by Forward Citations

1. 4360234 - In-situ method and apparatus for sparging gas bubbles (1982-11-23),

2. 4283947 - Self cleaning, steam cooled, gas sample probe (1981-08-18),

3. 4274866 - Flotation and sintering of synthetic manganese carbonate (1981-06-23),

4. 4266987 - Process for providing acid-resistant oxide layers on alloys (1981-05-12),

5. 4253917 - Method for the production of copper-boron carbide composite (1981-03-03),

6. 4249998 - Apparatus and process for producing copper-boron carbide composite by (1981-02-10),

7. 4248837 - Solvent extraction of copper, nickel with methyl hexyl dioxime (1981-02-03),

8. 4238299 - Tubing with copper-boron carbide composite facing and methods for its (1980-12-09),

9. 4232727 - Method and apparatus for the continuous production of strip (1980-11-11),

10. 4227928 - Copper-boron carbide composite particle and method for its production (1980-10-14),

11. 4226685 - Electrolytic treatment of plating wastes (1980-10-07),

12. 4222832 - Cascading electrolyte bleed streams (1980-09-16),

13. 4218907 - Rolling mill bearing assembly (1980-08-26),

14. 4211753 - Recovery of molybdenum values from dilute solutions (1980-07-08),

15. 4211270 - Method for continuous casting of metallic strands at exceptionally high (1980-07-08),

Company Overview

Kennecott Copper Corporation, headquartered in New York, NY, is a prominent player in the copper extraction technology sector. The company specializes in advanced methods such as solvent extraction, pyrometallurgical processes, and in-situ mining, which enhance the efficiency and sustainability of copper production. Additionally, Kennecott focuses on electrorefining and the recovery of valuable by-products like molybdenum and nickel, contributing to a more circular economy in the mining industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

99 Patents

#111 in New York, NY

#233 in New York

#3,825 in US

#7,847 in the World

New York, NY, United States of America

Kennecott Copper Corporation

Forward Citations = 909

85 inventors:

J Paul Pemsler (12 out of 15 patents)

Alkis S Rappas (8 out of 18 patents)

David W Marshall (7 out of 9 patents)

4. Robert E Lueders (7 out of 9 patents)

5. John K Litchfield (5 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kennecott Copper Corporation. Retrieved from https://idiyas.com/company/kennecott-copper

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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