Howard F. Davis Jr.

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Pittsburgh, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of producing cement
- Patent number 4,289,537
- Issue date Sep 15, 1981
- Lectromelt Corporation
- Howard F. Davis
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method for producing cement clinker from cement kiln waste dust
- Patent number 4,249,952
- Issue date Feb 10, 1981
- Pennsylvania Engineering Corporation
- Howard F. Davis
- C05 - FERTILISERS MANUFACTURE THEREOF