Richard J. Fruehan

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Murrysville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Use of alumina-carbon agglomerates in the carbothermic production o...
- Patent number 7,819,937
- Issue date Oct 26, 2010
- Alcoa Inc.
- Richard J. Fruehan
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Use of alumina-carbon agglomerates in the carbothermic production o...
- Patent number 7,753,988
- Issue date Jul 13, 2010
- Alcoa Inc.
- Richard J. Fruehan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Low carbon aluminum production method using single furnace carbothe...
- Patent number 7,556,667
- Issue date Jul 7, 2009
- Alcoa Inc.
- Richard J. Fruehan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method using selected carbons to react with Al2O and Al vapors in t...
- Patent number 6,849,101
- Issue date Feb 1, 2005
- Alcoa Inc.
- Richard J. Fruehan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Two-zone countercurrent smelter system and process
- Patent number 5,378,260
- Issue date Jan 3, 1995
- The United States of America as represented by the Department of Energy
- James H. Cox
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
USE OF ALUMINA-CARBON AGGLOMERATES IN THE CARBOTHERMIC PRODUCTION O...
- Publication number 20100107815
- Publication date May 6, 2010
- ALCOA INC.
- Richard J. Fruehan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
USE OF ALUMINA-CARBON AGGLOMERATES IN THE CARBOTHERMIC PRODUCTION O...
- Publication number 20090013823
- Publication date Jan 15, 2009
- ALCOA INC.
- Richard J. Fruehan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
LOW CARBON ALUMINUM PRODUCTION METHOD USING SINGLE FURNACE CARBOTHE...
- Publication number 20080196545
- Publication date Aug 21, 2008
- ALCOA INC.
- Richard J. Fruehan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Method using single furnace carbothermic reduction with temperature...
- Publication number 20060042413
- Publication date Mar 2, 2006
- Richard J. Fruehan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...