H. David Prior

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Bethel Park, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Chromia-containing refractory
- Patent number 8,658,552
- Issue date Feb 25, 2014
- Harbison-Walker Refractories Company
- H. David Prior
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Refractory brick for steel ladles
- Patent number 8,030,235
- Issue date Oct 4, 2011
- North American Refractories Company
- Shyam Miglani
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Chromia-alumina refractory
- Patent number 7,754,633
- Issue date Jul 13, 2010
- Harbison-Walker Reeractories Company
- H. David Prior
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Cristobalite-free mullite grain having reduced reactivity to molten...
- Patent number 6,548,436
- Issue date Apr 15, 2003
- North American Refractories Co.
- H. David Prior
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Cristobalite-free mullite grain having reduced reactivity to molten...
- Patent number 6,407,023
- Issue date Jun 18, 2002
- North American Refractories Co.
- H. David Prior
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

Information Patent Application
CHROMIA-CONTAINING REFRACTORY
- Publication number 20110152059
- Publication date Jun 23, 2011
- Harbison-Walker Refractories Company
- H. David Prior
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
REFRACTORY BRICK FOR STEEL LADLES
- Publication number 20100160142
- Publication date Jun 24, 2010
- North American Refractories Company
- Shyam Miglani
- B22 - CASTING POWDER METALLURGY
Information Patent Application
CHROMIA-ALUMINA REFRACTORY
- Publication number 20100019419
- Publication date Jan 28, 2010
- Harbison-Walker Refractories Company
- H. David Prior
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Refractories with improved hydration resistance
- Publication number 20090035474
- Publication date Feb 5, 2009
- North American Refractories Co.
- H. David Prior
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Injection lance
- Publication number 20050110202
- Publication date May 26, 2005
- North American Refractories Co.
- Ronald Barrett
- C21 - METALLURGY OF IRON
Information Patent Application
Cristobalite-free mullite grain having reduced reactivity to molten...
- Publication number 20020158373
- Publication date Oct 31, 2002
- North American Refractories Co.
- H. David Prior
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES