Chemistry of inorganic compounds – Boron or compound thereof – Binary compound
Reexamination Certificate
2003-08-21
2009-02-24
Langel, Wayne A. (Department: 1754)
Chemistry of inorganic compounds
Boron or compound thereof
Binary compound
C023S29300R, C219S764000, C428S402000, C428S901000
Reexamination Certificate
active
07494635
ABSTRACT:
Novel boron nitride agglomerated powders are provided having controlled density and fracture strength features. In addition methods for producing same are provided. One method calls for providing a feedstock powder including boron nitride agglomerates, and heat treating the feedstock powder to form a heat treated boron nitride agglomerated powder. In one embodiment the feedstock powder has a controlled crystal size. In another, the feedstock powder is derived from a bulk source.
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Clere Thomas M.
Pruss Eugene A.
Langel Wayne A.
Larson Newman Abel Polansky & White LLP
Saint-Gobain Ceramics & Plastics, Inc.
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