Robert M. Lewis

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Candler, NC, US

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Patents Grantslast 30 patents

Information Patent Grant
Multi-mineral/ash benefication process and apparatus
- Patent number 6,666,335
- Issue date Dec 23, 2003
- C.A.S.T. Minerals, Inc.
- William M. Bradley
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Lewis econosizer for hydraulically classifying particles
- Patent number 4,961,843
- Issue date Oct 9, 1990
- Robert M. Lewis
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...