Gas separation – Two or more separators – Plies or layers of different characteristics or orientation
Reexamination Certificate
2005-01-25
2005-01-25
Smith, Duane (Department: 1724)
Gas separation
Two or more separators
Plies or layers of different characteristics or orientation
C055S484000, C055S487000, C055S502000, C055S511000, C055S521000, C055S528000, C055SDIG003
Reexamination Certificate
active
06846342
ABSTRACT:
A filter pack is formed of a pleated filter section and a top edge band and a bottom edge band that form a frame. The filter section and the frame are formed of a nonwoven polymer material, preferably a polyester material. The filter section is retained in the frame by an adhesive, preferably also a polyester material. The filter pack provides more filtration media per area, leading to more efficient filtration. The filter pack is fully shreddable and does not require separation into various components for recycling.
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Mertz Kent
Schmitt Beatrix Yvonne
Freudenberg Nonwovens Limited Partnership
Greene Jason M.
Smith Duane
Weingarten Schurgin, Gagnebin & Lebovici LLP
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