Gas separation – With means securing or retaining separating media – Unit or cohesive sheet-like media in flow line or frame
Reexamination Certificate
2005-10-18
2005-10-18
Smith, Duane (Department: 1724)
Gas separation
With means securing or retaining separating media
Unit or cohesive sheet-like media in flow line or frame
C055S499000, C055S502000, C055S521000, C055SDIG005, C264S257000, C264S271100, C264S299000, C264SDIG004
Reexamination Certificate
active
06955701
ABSTRACT:
An improved filter element is provided. In preferred form, the filter element includes first and second end caps, with media extending therebetween. The end caps are preferably formed from foamed polyurethane, and preferably there are no outer peripheral standoff indents provided in the end caps. Each end cap preferably includes a standoff ring, spaced from an outer perimeter, positioned therein. Preferred approaches to manufacturing such elements are provided.
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Declaration regarding Prior Art Blue Filter, Exhibits 1A, 1B, 1C.
Declaration regarding Prior Art Orange Filter, Exhibits 2A, 2B, 2C.
Donaldson & Company, Inc.
Greene Jason M.
Merchant & Gould P.C.
Smith Duane
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