Robert A. Marra

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Penn Hills, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Fiber reinforced composite having an aluminum phosphate bonded matrix
- Patent number 6,309,994
- Issue date Oct 30, 2001
- Aluminum Company of America
- Robert A. Marra
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Aluminum phosphate bonded fiber reinforced composite material conta...
- Patent number 5,371,050
- Issue date Dec 6, 1994
- Aluminum Company of America
- David L. Belitskus
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Formation of ceramic-metal composite by pressure casting and oxidat...
- Patent number 5,194,202
- Issue date Mar 16, 1993
- Aluminum Company of America
- David I. Yun
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Production of high purity substantially spherical metal hydroxide/o...
- Patent number 4,678,657
- Issue date Jul 7, 1987
- Aluminum Company of America
- Ajay Sood
- C01 - INORGANIC CHEMISTRY