Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 10, 2009
Patent Application Number
10752434
Date Filed
January 6, 2004
Patent Citations Received
Patent Primary Examiner
Patent abstract
A high purity ceramic article having a typical pore size of at least about 15 μm and an active impurity concentration of less than about 400 ppm can be prepared by molding ceramic powder, sintering to vaporize any active impurity components, washing to dissolve any remaining active impurity components with an acid solution, and oxidizing to remove any residual active impurity components.
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