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:
Aug. 29, 2023
Filed:
Jul. 15, 2020
Applicant:
Cummins Filtration Ip, Inc., Columbus, IN (US);
Inventors:
Kan Wang, Cookeville, TN (US);
William C. Haberkamp, Cookeville, TN (US);
Assignee:
CUMMINS FILTRATION IP, INC., Columbus, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D04H 1/4382 (2012.01); D04H 1/435 (2012.01); D04H 1/56 (2006.01); D04H 3/16 (2006.01); D01F 8/14 (2006.01); D01D 5/098 (2006.01); D01F 6/82 (2006.01); B01D 39/16 (2006.01);
U.S. Cl.
CPC ...
D04H 1/43835 (2020.05); B01D 39/1623 (2013.01); D01D 5/0985 (2013.01); D01F 6/82 (2013.01); D01F 8/14 (2013.01); D04H 1/435 (2013.01); D04H 1/43838 (2020.05); D04H 1/56 (2013.01); D04H 3/16 (2013.01); B01D 2239/0216 (2013.01); B01D 2239/064 (2013.01); B01D 2239/1233 (2013.01);
Abstract
A nonwoven web comprising a layer of polymeric fibers, wherein, based on the total number of polymeric fibers, at least 10% the polymeric fibers in said layer are coarse fibers having a fiber diameter of 4 μm or more, and at least 10% of the polymeric fibers in said layer are fine fibers having a fiber diameter of 2 μm or less. Also described herein is a method for making the nonwoven web, comprising melt-blowing a polymer mixture comprising two immiscible or partially miscible polymers.