Gas separation – Specific media material – Fibrous or strand form
Reexamination Certificate
2007-12-25
2007-12-25
Smith, Duane (Department: 1724)
Gas separation
Specific media material
Fibrous or strand form
C055S527000, C055SDIG039, C095S273000, C095S285000, C210S660000, C210S500100, C210S505000, C210S510100, C423S627000, C423S629000, C436S177000
Reexamination Certificate
active
11531107
ABSTRACT:
The invention is a filter for gaseous media in which nano alumina fibers and second fibers are arranged in a matrix to create asymmetrical pores. The filter is a high efficiency, high capacity particulate filter that intercepts pathogens and other particulate matter from gaseous media, including vapor-suspended particles. The new filter has an improved retention of water-aerosolized particles as compared to conventional HEPA filters and may be used as a pre-filter that extends the life of HEPA filters by about five to ten times. The invention is also a method of manufacturing and using the filter.
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Kaledin Leonid A.
Tepper Frederick
Argonide Corporation
Cohen & Grigsby P.C.
Passerin, Esq. Alicia M.
Pham Minh-Chau T.
Smith Duane
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