Thomas S. Piwonka

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Solon, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Controlled solidification, method of distributing strengthening add...
- Patent number 4,683,936
- Issue date Aug 4, 1987
- TRW Inc.
- Michael Cybulsky
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method and apparatus for use in casting an article
- Patent number 4,449,567
- Issue date May 22, 1984
- TRW Inc.
- William S. Blazek
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Mold assembly and method of making the same
- Patent number 4,170,256
- Issue date Oct 9, 1979
- TRW Inc.
- William S. Blazek
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Mold assembly and method of making the same
- Patent number 4,066,116
- Issue date Jan 3, 1978
- TRW Inc.
- William S. Blazek
- B22 - CASTING POWDER METALLURGY