Henry F. Frazier

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San Antonio, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Emulsion and method of making same
- Patent number 4,475,953
- Issue date Oct 9, 1984
- Southwest Research Institute
- Allen C. Ludwig
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Sulfur compounds and method of making same
- Patent number RE31575
- Issue date May 1, 1984
- Southwest Research Institute
- Allen C. Ludwig
- 106 - Compositions: coating or plastic
Information Patent Grant
Sulfur compounds and method of making same
- Patent number 4,290,816
- Issue date Sep 22, 1981
- Southwest Research Institute
- Allen C. Ludwig
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES