Dual media filter cartridge construction
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United States of America Patent
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-
Nov 9, 1999
Issued Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Oct 19, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A filter cartridge is provided which includes (a) a wound depth filter or a cylindrical seamless depth filter and (b) a pleated filter having a lower micron retention rating than the depth filter. The depth filter and pleated filter surround a central opening. The cartridge is sealed and an appropriate inlet or outlet is provided in order to assure sequential fluid flow first through the depth filter and then through the pleated filter.
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Cited Art Landscape
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