Gas separation – Two or more separators – Plies or layers of different characteristics or orientation
Reexamination Certificate
2011-03-01
2011-03-01
Smith, Duane (Department: 1776)
Gas separation
Two or more separators
Plies or layers of different characteristics or orientation
C055S487000, C055S528000, C055SDIG007, C055SDIG039, C055SDIG044
Reexamination Certificate
active
07896941
ABSTRACT:
A filter media product and method of making the same wherein at least two filter media thicknesses of differing average coarse and fine fiber sizes are held in intertangled relationship forming a gradient density fibrous filter media with the fiber sizes having an overall average in successive thicknesses being either greater or less than the average fiber size of the intertangled fiber thickness(es).
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AAF-McQuay Inc.
Cole James E.
Middleton & Reutlinger
Pham Minh-Chau
Salazar John F.
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