Filtering unit having separately attachable filter cassette, filter cassette, and method of filtering
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United States of America Patent
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Aug 3, 2004
Issued Date -
N/A
app pub date -
Sep 11, 2002
filing date -
Feb 22, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A filtering unit including an upper container for receiving fluid to be filtered, a lower container for receiving the fluid from the upper container and an intermediate filter cassette. The filter cassette includes a support member connected with a flat filter member, such as a membrane filter, and can be removed with respect to each of the upper and lower containers. The filter cassette may be inserted within the upper container with sealing engagement between the support member and the internal wall of the upper container. The various disclosed embodiments include the ability to serially connect multiple filter cassettes generally between the liquid contained in the upper container and the lower container.
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