04011067 is referenced by 123 patents and cites 8 patents.

A new filter medium, which can remove a high percentage of fine particles from a gas stream while causing a relatively low pressure drop in the gas stream, comprises a base porous web, one or more lightweight non-self-supporting layers of microfibers collected and carried on the base porous web, and a top porous web. A new aerosol filter apparatus incorporates the new filter medium to provide economical consistent filtering of air in a home, office, or industrial environment. In this new filter apparatus, a web of the filter medium extends from a supply roll across a stream of the air being cleaned to a take-up roll; and the filter medium is advanced from the supply roll to the take-up roll to gradually provide a fresh length of filter medium in the air stream.

Title
Filter medium layered between supporting layers
Application Number
437880
Publication Number
4011067
Application Date
September 11, 1975
Publication Date
March 8, 1977
Inventor
Patrick H Carey Jr
Bloomington
MN, US
Agent
Roger R Tamte
Donald M Sell
Cruzan Alexander
Assignee
Minnesota Mining and Manufacturing Company
MN, US
IPC
B01D 46/18
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