Chemistry of inorganic compounds – Boron or compound thereof – Binary compound
Reexamination Certificate
2006-12-20
2008-10-21
Langel, Wayne (Department: 1793)
Chemistry of inorganic compounds
Boron or compound thereof
Binary compound
C422S186000, C423S345000, C423S439000, C423S440000
Reexamination Certificate
active
07438880
ABSTRACT:
The production of ultrafine metal carbide powders from solid metal carbide and nitrogen-containing material is disclosed. The starting materials are fed together or separately to a plasma system where the solid metal carbide is melted and/or vaporized in the presence of nitrogen to form ultrafine metal carbide particles of high purity.
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Hung Cheng-Hung
Vanier Noel R.
Langel Wayne
Palladino Donald R.
PPG Industries Ohio Inc.
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