David A. Pierman

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Cleveland, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Graphite composites and process for the manufacture thereof
- Patent number 4,923,578
- Issue date May 8, 1990
- The Standard Oil Company
- Kenneth C. Benton
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Graphite composites and process for the manufacture thereof
- Patent number 4,857,395
- Issue date Aug 15, 1989
- The Standard Oil Company
- Kenneth C. Benton
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES