Donaldson Comapny, Inc.

Gregory S Tronnes

Qiong Gao

Michael A Madden

Rakesh Kumar Yadav

Jason A Tiffany

Giancarlo M Izzi

Richard Patrick DeJong

Robert M Rogers

Aflal Rahmathullah

Richard Patrick Dejong

Embodiments disclosed herein relate to filter media having a downstream layer of filter material and an upstream layer of fibers. The downstream layer of filter material has a capture efficiency of at least 10% and the upstream layer of fibers has a mean fiber diameter of at least 10 microns and a solidity of less than 10%. A spacing structure defines a mean void distance between the upstream layer of fibers and the downstream layer of filter material.

Filter media with improved dust loading

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.

Filter media, elements, and methods

Fibrous filter medium that includes a melt-blown filter layer comprising melt-blown fibers and a high-efficiency glass-containing filter layer comprising glass fibers.

Filter media and elements

Growing community of inventors

Richfield, MN, United States of America

Gregory S Tronnes