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:
Nov. 13, 2012
Filed:
Aug. 01, 2008
Alan Smithies, Overland Park, KS (US);
Jack T. Clements, Lee's Summitt, MO (US);
David Charles Jones, Midlothian, VA (US);
Hyun Sung Lim, Midlothian, VA (US);
Alan Smithies, Overland Park, KS (US);
Jack T. Clements, Lee's Summitt, MO (US);
David Charles Jones, Midlothian, VA (US);
Hyun Sung Lim, Midlothian, VA (US);
BHA Group, Inc., Wilmington, DE (US);
Abstract
A composite filter media structure includes, in an exemplary embodiment, a base substrate that includes a nonwoven synthetic fabric formed from a plurality of fibers with a spunbond process. The base substrate has a minimum filtration efficiency of about 50%, measured in accordance with ASHRAE 52.2-1999 test procedure A nanofiber layer is deposited on one side of the base substrate. The composite filter media structure has a minimum filtration efficiency of about 75%, measured in accordance with ASHRAE 52.2-1999 test procedure.