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:
Jun. 26, 2012
Filed:
Feb. 27, 2009
Alan Smithies, Overland Park, KS (US);
Robert Henry Devine, Ii, Lee's Summit, MO (US);
Jack T. Clements, Lee's Summit, MO (US);
Alan Smithies, Overland Park, KS (US);
Robert Henry Devine, II, Lee's Summit, MO (US);
Jack T. Clements, Lee's Summit, MO (US);
BHA Group, Inc., Kansas City, MO (US);
Abstract
A composite filter media structure and an associated method of making are provided. The structure includes a base substrate that includes a nonwoven fabric substrate formed from a plurality of bicomponent synthetic fibers using a spunbond process. The composite filter media structure includes a nanofiber layer deposited on one side of the base substrate by an electro-blown spinning process. In one aspect, the base substrate and the nanofiber layer are configured to provide at least an 85% filtration efficiency measured in accordance with an ASHRAE 52.2-1999 test method. In another aspect, the nanofiber layer has a basis weight of about 2.0 g/mto about 3.0 g/m.