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:
Feb. 05, 2019
Filed:
Mar. 14, 2014
Ahlstrom-munksjö Oyj, Helsinki, FI;
Donaldson Company, Inc., Bloomington, MN (US);
Kevin R. Schouweiler, Brentwood, TN (US);
Kent Williamson, Madisonville, KY (US);
Kristin Amsden, Bloomington, MN (US);
Steven D. Schmeichel, Bloomington, MN (US);
Ahlstrom-Munksjo Oyj, Helsinki, FI;
Donaldson Company, Inc., Bloomington, MN (US);
Abstract
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 60% to 80% to ensure that the media is flexible enough to be formed into a fluted structure, and strong enough to retain the fluted structure when wound into a roll and to permit further processing without the media becoming too brittle. The filtration media comprises a blend of cellulose and synthetic fibers having a weight percent of 81 wt % to 87 wt % of a weight of the media and a resin binder having a weight of 13 wt % to 19 wt % (preferably about 16 wt %) of the weight of the media.