David Cheek

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Liberty, NC, US

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Patents Grantslast 30 patents

Information Patent Grant
Recovery of free aluminum from aluminum dross using plasma energy w...
- Patent number 4,997,476
- Issue date Mar 5, 1991
- Plasma Energy Corporation
- Richard D. Lindsay
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method and apparatus for heating molten steel utilizing a plasma ar...
- Patent number 4,918,282
- Issue date Apr 17, 1990
- Plasma Energy Corporation
- David Cheek
- C21 - METALLURGY OF IRON
Information Patent Grant
Method and apparatus for heating molten steel utilizing a plasma ar...
- Patent number 4,734,551
- Issue date Mar 29, 1988
- Plasma Energy Corporation
- David Cheek
- C21 - METALLURGY OF IRON