Ronald D. Gray

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Bethel Park, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing beneficiated titanium oxides
- Patent number 6,685,761
- Issue date Feb 3, 2004
- Midrex International B.V. Rotterdam, Zurich Branch
- Glenn E. Hoffman
- C21 - METALLURGY OF IRON
Information Patent Grant
Method for producing molten iron in duplex furnaces
- Patent number 6,582,491
- Issue date Jun 24, 2003
- Midrex International, B.V. Rotterdam, Zurich Branch
- Glenn E. Hoffman
- C21 - METALLURGY OF IRON
Information Patent Grant
Method of producing molten iron in duplex furnaces
- Patent number 6,251,156
- Issue date Jun 26, 2001
- Midrex Technologies, Inc.
- Glenn E. Hoffman
- C21 - METALLURGY OF IRON
Information Patent Grant
Steel making method
- Patent number 4,612,043
- Issue date Sep 16, 1986
- Pennsylvania Engineering Corporation
- Ronald D. Gray
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
Method for producing molten iron in duplex furnaces
- Publication number 20010054329
- Publication date Dec 27, 2001
- Glenn E. Hoffman
- C21 - METALLURGY OF IRON