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:
Dec. 19, 2023
Filed:
Oct. 12, 2021
Applicant:
Donaldson Company, Inc., Minneapolis, MN (US);
Inventors:
Qiong Gao, Minneapolis, MN (US);
Richard Patrick DeJong, Eden Prairie, MN (US);
Gregory S. Tronnes, Richfield, MN (US);
Jason A. Tiffany, Bloomington, MN (US);
Giancarlo M. Izzi, Minneapolis, MN (US);
Assignee:
Donaldson Company, Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 39/16 (2006.01); B01D 39/20 (2006.01);
U.S. Cl.
CPC ...
B01D 39/1623 (2013.01); B01D 39/2017 (2013.01); B01D 2239/025 (2013.01); B01D 2239/065 (2013.01); B01D 2239/0622 (2013.01); B01D 2239/0654 (2013.01); B01D 2239/0668 (2013.01); B01D 2239/0681 (2013.01); B01D 2239/1233 (2013.01); B01D 2239/1258 (2013.01); B01D 2239/1266 (2013.01); B01D 2239/1275 (2013.01);
Abstract
Fibrous filter medium that includes a surface-loading filter layer comprising fine fibers having an average diameter of less than 1 micron; a depth loading filter layer; and a support layer; wherein the layers are configured and arranged for placement in a gas stream with the surface loading filter layer being the most upstream layer.