US Patent 7686920 Fibrillated polypyridobisimidazole floc
Patent 7686920 was granted and assigned to E.I. Du Pont De Nemours And Company on March, 2010 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
December 19, 2006
Date of Patent
March 30, 2010
Patent Application Number
12084006
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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