Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 17, 2007
Patent Application Number
11120049
Date Filed
May 2, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
An electret article that includes a polymeric material that has electric charge imparted thereto, that has one or more heteroatoms, that has a fluorosaturation ratio of less than 200, and that has an atomic percent fluorine of greater than about 40%. The inventive electret article is resistant to charge degradation upon exposure to high temperatures for prolonged time periods.
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