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. 24, 2026
Filed:
Feb. 14, 2019
Donaldson Company, Inc., Minneapolis, MN (US);
Aflal Rahmathullah, Savage, MN (US);
Andrew J. Dallas, Lakeville, MN (US);
Brian R. Tucker, Farmington, MN (US);
Daniel E. Adamek, Bloomington, MN (US);
Paul A. Way, Edina, MN (US);
Scott A. Betcher, Lakeville, MN (US);
Vijay K. Kapoor, Eagan, MN (US);
Colter A. Marcks, Ellsworth, WI (US);
William S. Rossiter, Brooklyn Park, MN (US);
Timothy O. Winters, Nowthen, MN (US);
Wijadi Jodi, Burnsville, MN (US);
Davis B. Moravec, Burnsville, MN (US);
Stephen K. Sontag, Maple Grove, MN (US);
Bradly G. Hauser, Minneapolis, MN (US);
Matthew P. Goertz, Bloomington, MN (US);
Derek O. Jones, Andover, MN (US);
Yehya A. Elsayed, Dearborn, MI (US);
Stuti S. Rajgarhia, Bloomington, MN (US);
Charles S. Christ, Deephaven, MN (US);
Joseph M. Block, Carver, MN (US);
Donaldson Company, Inc., Minneapolis, MN (US);
Abstract
The current technology relates to various filter elements configurations where a substrate layer defines a surface having a treatment. The treatment increases a roll off angle of the surface for a 50 water droplet when the surface is immersed in toluene. The filter element can have a housing and the substrate disposed in the housing. In some embodiments the substrate layer defines a plurality of pleats extending between pleat folds that form flow faces of the media. In some embodiments the substrate is incorporated into single facer media of a filter element. In some embodiments the substrate layer is incorporated in a filter element having a flow-by configuration. In some embodiments the substrate layer is incorporated in a filter element having a cross-flow configuration. Some embodiments relate to a vent. Some embodiments relate to a barrier assembly and/or a fuel filter element. Various other filter elements are described.