John E. Marhanka

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Delmont, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Low temperature mineralization of alumina
- Patent number 6,203,773
- Issue date Mar 20, 2001
- Alcoa Inc.
- Michael A. Easley
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Aluminum hydroxide production
- Patent number 5,225,229
- Issue date Jul 6, 1993
- Aluminum Company of America
- Edward S. Martin
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Small sized alpha alumina particles and platelets
- Patent number 5,149,520
- Issue date Sep 22, 1992
- Aluminum Company of America
- Steven W. Sucech
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Noncollapsible ceramic foam
- Patent number 4,356,271
- Issue date Oct 26, 1982
- Aluminum Company of America
- Thomas L. Francis
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES