Filter media and devices for high temperature filtration and...

Details Filter media and devices for high temperature filtration and... Filter media and devices for high temperature filtration and...

2011-07-26

2011-07-26

Hill, Jr., Robert J (Department: 1776)

Gas separation

Specific media material

With coating, impregnant, or bonding agent

C055S521000, C055SDIG007

Reexamination Certificate

active

07985275

ABSTRACT:
A high temperature filter medium for use in a filtering operation comprising, a nonwoven fabric substrate having a physical structure and comprising a plurality of polymeric fibers, wherein at least a portion of the plurality of polymeric fibers comprise a base polymer and at least a portion of the plurality of polymeric fibers comprise a secondary polymer, and wherein the base polymer, the secondary polymer, or both bond at least a portion of the polymeric fibers together, the nonwoven fabric substrate being capable of retaining the physical structure at a filtering temperature greater than 135° C. A method for making a filter medium being capable of retaining the physical structure at a filtering temperature greater than 135° C.

REFERENCES:
patent: 5230455 (1993-07-01), Price
patent: 6149717 (2000-11-01), Satyapal et al.
patent: 6752847 (2004-06-01), Smithies
patent: 2003/0110745 (2003-06-01), Smithies
patent: 2003/0192294 (2003-10-01), Smithies
patent: 2004/0031252 (2004-02-01), Heikamp

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