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Robert A. Youngman
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Newbury, OH, US
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last 30 patents
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Patent Grant
Process for making a low electrical resistivity, high purity alumin...
Patent number
6,017,485
Issue date
Jan 25, 2000
Carborundum Corporation
Rudolph C. Enck
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Method of forming an aluminum nitride article utilizing a platinum...
Patent number
5,888,446
Issue date
Mar 30, 1999
International Business Machines Corporation
Jon A. Casey
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Low temperature sintered, resistive aluminum nitride ceramics
Patent number
5,773,377
Issue date
Jun 30, 1998
Crystalline Materials Corporation
Jonathan H. Harris
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Aluminum nitride body having graded metallurgy
Patent number
5,763,093
Issue date
Jun 9, 1998
International Business Machines Corporation
Jon Alfred Casey
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Aluminum nitride body having graded metallurgy
Patent number
5,682,589
Issue date
Oct 28, 1997
International Business Machines Corporation
Jon Alfred Casey
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Aluminum nitride body having graded metallurgy
Patent number
5,552,232
Issue date
Sep 3, 1996
International Business Machines Corporation
Jon A. Casey
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Aluminum nitride body having graded metallurgy
Patent number
5,552,107
Issue date
Sep 3, 1996
Jon A. Casey
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Low temperature sintering route for aluminum nitride ceramics
Patent number
5,541,145
Issue date
Jul 30, 1996
The Carborundum Company/IBM Corporation
Jonathan H. Harris
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Low temperature sintering route for aluminum nitride ceramics
Patent number
5,424,261
Issue date
Jun 13, 1995
The Carborundum Company
Jonathan H. Harris
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES