Specialized metallurgical processes – compositions for use therei – Processes – Producing or purifying free metal powder or producing or...
Reexamination Certificate
2011-07-19
2011-07-19
Wyszomierski, George (Department: 1733)
Specialized metallurgical processes, compositions for use therei
Processes
Producing or purifying free metal powder or producing or...
C075S360000
Reexamination Certificate
active
07981191
ABSTRACT:
A process for obtaining tantalum powder from tantalum containing scrap material is provided. The process includes selecting source material, such as from sintered anodes for capacitors, hydriding the source material, milling to desired particle size and surface area, dehydriding, deoxidizing, agglomerating, sifting, and acid treating to obtain tantalum powder of a desired size and purity.
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Hafner Craig F.
Smokovich Joseph
Hi-Temp Specialty Metals, Inc.
Norris McLauglin & Marcus, P.A.
Wyszomierski George
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