Filter of depth layer type
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United States of America Patent
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-
Nov 6, 1990
Grant Date -
N/A
app pub date -
Aug 18, 1988
filing date -
Aug 21, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A filter of depth layer type comprises a generally cylindrical filter body formed by laminating filter elements each in the form of a thin sheet of a filtering material having a central hole, and these central holes provide a conduit extending in the axial direction through the filter body. The filter body has a density distribution in which the density is lowest at the outer peripheral area sewing as an inlet for a fluid to be filtered and becomes progressively higher toward the conduit to serving as an outlet for the fluid to be filtered.
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