US Patent 7988866 Method of treating fumed silica-containing drainage water
Patent 7988866 was granted and assigned to Tokuyama Corporation on August, 2011 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
August 17, 2006
Date of Patent
August 2, 2011
Patent Application Number
11990739
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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