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. 05, 2018
Filed:
Aug. 01, 2014
Cummins Filtration Ip, Inc., Columbus, IN (US);
William C. Haberkamp, Cookeville, TN (US);
Eric A. Janikowski, Jefferson, WI (US);
Barry Mark Verdegan, Stoughton, WI (US);
Christopher E. Holm, Madison, WI (US);
Huanling Liu, Cookeville, TN (US);
Kyle Ellison, Hermitage, TN (US);
Mark T. Wieczorek, Cookeville, TN (US);
CUMMINS FILTRATION IP, INC., Columbus, IN (US);
Abstract
Composite filter media is formed from multiple layers of media material including a nanofiber media layer, where the layers are laminated, bound, or otherwise composited to each other. The composite filter media can comprise at least one nanofiber layer comprising polymeric media material having a geometric mean fiber diameter of about 100 nm to 1 μm, and fibers configured in a gradient such that ratio of the geometric mean diameter of fibers at the upstream face of the nanofiber layer to the geometric mean diameter of fibers at the downstream face of the nanofiber layer is about 1.1 to 2.8, preferably about 1.2 to 2.4.