Billy B. Gravitt

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Katy, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic cement and composition employing the same
- Patent number 4,997,484
- Issue date Mar 5, 1991
- Lone Star Industries, Inc.
- Billy B. Gravitt
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Cement composition curable at low temperatures
- Patent number 4,842,649
- Issue date Jun 27, 1989
- Pyrament, Inc.
- Richard F. Heitzmann
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES