Richard K. Lea

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Watford, GB

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Patents Grantslast 30 patents

Information Patent Grant
Process for the extraction of precious metals from concentrates the...
- Patent number 4,397,689
- Issue date Aug 9, 1983
- Inco Limited
- Richard K. Lea
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for the extraction of precious metals from solutions thereof
- Patent number 4,390,366
- Issue date Jun 28, 1983
- Inco Limited
- Richard K. Lea
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...