The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 17, 2007
Filed:
May. 02, 2005
Seth M. Kirk, Minneapolis, MN (US);
Gerald R. Spartz, St. Paul, MN (US);
Marvin E. Jones, Grant, MN (US);
Steven J. Pachuta, Eagan, MN (US);
John S. Huberty, St. Paul, MN (US);
Seth M. Kirk, Minneapolis, MN (US);
Gerald R. Spartz, St. Paul, MN (US);
Marvin E. Jones, Grant, MN (US);
Steven J. Pachuta, Eagan, MN (US);
John S. Huberty, St. Paul, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
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.