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:
Sep. 10, 2013
Filed:
Nov. 25, 2008
John M. Sebastian, Oakdale, MN (US);
Fuming B. LI, Woodbury, MN (US);
Marvin E. Jones, Grant, MN (US);
Luke T. Dressel, Somerset, WI (US);
Daniel A. Japuntich, St. Paul, MN (US);
John M. Sebastian, Oakdale, MN (US);
Fuming B. Li, Woodbury, MN (US);
Marvin E. Jones, Grant, MN (US);
Luke T. Dressel, Somerset, WI (US);
Daniel A. Japuntich, St. Paul, MN (US);
3M Innovative Properties Comany, St. Paul, MN (US);
Abstract
Electret webs are presented which include a blend of a thermoplastic resin and a charge additive. The charge additives include ester-substituted and amide-substituted trianilino triazine materials. The webs prepared from the blends may be in the form of films or non-woven fibrous webs. Non-woven microfiber webs are useful as filtration media.