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:
May. 06, 2025
Filed:
Apr. 30, 2019
Applicant:
Cummins Filtration Ip, Inc., Columbus, IN (US);
Inventors:
Eric A. Janikowski, Jefferson, WI (US);
Huanling Liu, Cookeville, TN (US);
Christopher E. Holm, Madison, WI (US);
Mark T. Wieczorek, Cookeville, TN (US);
Barry Mark Verdegan, Stoughton, WI (US);
Assignee:
CUMMINS FILTRATION IP, INC., Columbus, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 27/00 (2005.12); B01D 39/16 (2005.12); B01D 39/20 (2005.12); D04H 3/00 (2011.12);
U.S. Cl.
CPC ...
B01D 39/2017 (2012.12); B01D 39/1623 (2012.12); B01D 2239/025 (2012.12); B01D 2239/0636 (2012.12); B01D 2239/0654 (2012.12); B01D 2239/1216 (2012.12); B01D 2239/1225 (2012.12); B01D 2239/1233 (2012.12); B01D 2239/1258 (2012.12);
Abstract
A filter media comprises a first fiber layer and a second fiber layer positioned downstream of the first fiber layer. The first fiber layer has a first geometric mean fiber diameter of less than 1 μm such that the geometric standard deviation of fiber diameter is greater than 2. The second fiber layer has a second geometric mean fiber diameter of less than 1 μm such that the geometric standard deviation of fiber diameter is less than 2.