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:
Sep. 21, 2021
Filed:
Oct. 02, 2019
Applicant:
Ahlstrom-munksjö Oyj, Helsinki, FI;
Inventors:
Kevin R. Schouweiler, Brentwood, TN (US);
Kent Williamson, Madisonville, KY (US);
Assignee:
AHLSTROM-MUNKSJÖ OYJ, Helsinki, FI;
Primary Examiner:
Int. Cl.
CPC ...
B01D 39/18 (2006.01); B01D 39/16 (2006.01); B05D 3/00 (2006.01);
U.S. Cl.
CPC ...
B01D 39/18 (2013.01); B01D 39/163 (2013.01); B05D 3/007 (2013.01); B01D 2239/064 (2013.01); B01D 2239/069 (2013.01); B01D 2239/086 (2013.01); B01D 2239/1216 (2013.01); B01D 2239/1225 (2013.01); B01D 2239/1233 (2013.01); B01D 2239/1258 (2013.01); B01D 2239/1291 (2013.01);
Abstract
A method for manufacturing a filtration media with improved filtration, strength, tear resistance and air permeability in the form of a relatively thin and lightweight wet-laid fibrous web that has a wet Mullen ratio of 20% to 90% to ensure that the media is flexible enough to be formed into a fluted structure, and strong enough to retain the fluted structure when would into a roll and to permit further processing.