Forward Citations = 50

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11 inventors (with patents filed for the assignee):

Richard Alasdair Grant (4 out of 12 patents)

Raymond Edward Oliver (4 out of 4 patents)

George McGuire (3 out of 3 patents)

4. John Blunden Payne (2 out of 5 patents)

5. Christopher S Smith (1 out of 1 patent)

6. Yvonne Taylor (1 out of 1 patent)

7. Raymond Edward Oliver (1 out of 1 patent)

8. Joseph G Day (1 out of 7 patents)

9. John J MacGregor (1 out of 1 patent)

10. Kenneth J Shanton (1 out of 1 patent)

11. Jeffrey R Taylor (1 out of 1 patent)

11 patents: Sort by Forward Citations

1. 5879644 - Interseparation of platinum group metals (1999-03-09),

2. 5478376 - Method for the separation of rhodium and/or iridium from solution (1995-12-26),

3. 4448604 - Recovery of precious metals from leach residues (1984-05-15),

4. 4382067 - Solvent extraction of platinum group metals (1983-05-03),

5. 4331634 - Solvent extraction process for the selective extraction of palladium (1982-05-25),

6. 4260139 - Refining of metals (1981-04-07),

7. 4201636 - Electrochemical destruction of stable complexes (1980-05-06),

8. 4145187 - Treatment of material with hydrogen chloride (1979-03-20),

9. 4086084 - Refining of metals (1978-04-25),

10. 4002469 - Separation of metals (1977-01-11),

11. 3998926 - Treatment of material with hydrogen chloride (1976-12-21),

Company Overview

Matthey Rustenburg Refiners (Pty) Limited is a prominent player in the precious metals refining sector, specializing in the recovery and refining of platinum group metals. Located in Johannesburg, South Africa, the company is integral to the local and global supply chains of these valuable resources. Its operations focus on advanced metallurgical processes and sustainable practices, contributing to various industries, including automotive, electronics, and jewelry, while emphasizing environmental responsibility and resource efficiency.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

11 Patents

#10 in Johannesburg

#36 in South Africa

#51,801 in the World

Johannesburg, South Africa

Matthey Rustenburg Refiners (Pty) Limited

Forward Citations = 50

11 inventors:

Richard Alasdair Grant (4 out of 12 patents)

Raymond Edward Oliver (4 out of 4 patents)

George McGuire (3 out of 3 patents)

4. John Blunden Payne (2 out of 5 patents)

5. Christopher S Smith (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Matthey Rustenburg Refiners (Pty) Limited. Retrieved from https://idiyas.com/company/matthey-rustenburg-refiners-pty

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]