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. 10, 2026
Filed:
Apr. 02, 2021
Applicant:
Donaldson Company, Inc., Bloomington, MN (US);
Inventors:
Derek O. Jones, Andover, MN (US);
Klenton T. Willis, Woodbury, MN (US);
Assignee:
Donaldson Company, Inc., Bloomington, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 39/16 (2006.01); B01D 37/00 (2006.01); B01D 39/18 (2006.01); B32B 5/26 (2006.01);
U.S. Cl.
CPC ...
B01D 39/163 (2013.01); B01D 37/00 (2013.01); B01D 39/18 (2013.01); B01D 2239/0216 (2013.01); B01D 2239/0618 (2013.01); B01D 2239/1216 (2013.01); B01D 2239/1233 (2013.01); B01D 2239/1258 (2013.01); B01D 2239/1266 (2013.01); B01D 2239/1291 (2013.01);
Abstract
This disclosure describes a filtration medium that is preferably glass-free or substantially glass-free. In some embodiments, the filtration medium preferably exhibits capacity and efficiency comparable to or better than similar glass-containing filtration media. The filtration medium includes bicomponent fibers, efficiency fibers (for example, PET fibers), and microfibrillated fibers. The efficiency fibers include fibers having a fiber diameter in a range of 1 micron to 5 microns and fibers having a fiber diameter of at least 0.1 micron and less than 1 micron.