David J. Ball

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Nottingham, GB

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for heating and grinding materials
- Patent number 5,580,002
- Issue date Dec 3, 1996
- BPB Industries Public Limited Company
- Arthur G. T. Ward
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Calcination apparatus
- Patent number 5,011,668
- Issue date Apr 30, 1991
- United States Gypsum Company
- David J. Ball
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Calcination apparatus
- Patent number 4,915,623
- Issue date Apr 10, 1990
- United States Gypsum Company
- David J. Ball
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES