Patent · US Active

Filter media with improved dust loading

US12239930B2 · kind B2 · utility

0Cited by

20References

20Claims

0Family size

Assignee

Donaldson Company, Inc. · US

Inventors

Gregory S. Tronnes · Richfield, US
Robert M. Rogers · Minnetonka, US
Aflal Rahmathullah · Savage, US

Key dates

Filing date	Mar 27, 2020
Grant date	Mar 4, 2025
Priority date	—
Expiry date	Sep 7, 2041

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2239/1233
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.