John James MacGregor

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London, EN

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Patents Grantslast 30 patents

Information Patent Grant
Recovery of gallium
- Patent number 4,029,499
- Issue date Jun 14, 1977
- Johnson Matthey & Co., Limited
- Walter Westwood
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Refining of noble group metals
- Patent number 3,979,207
- Issue date Sep 7, 1976
- Matthey Rustenburg Refiners (Proprietary)
- John James MacGregor
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recovery of gallium
- Patent number 3,969,108
- Issue date Jul 13, 1976
- Johnson Matthey & Co., Limited
- John James MacGregor
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for the separation and purification of platinum, rhodium an...
- Patent number 3,960,549
- Issue date Jun 1, 1976
- Matthey Rustenburg Refiners, Limited
- John James MacGregor
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...