Product and method of forming successive layers of face-to-face adjacent media with calculated pore size
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United States of America Patent
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Jul 15, 2008
Grant Date -
Jun 30, 2005
app pub date -
Dec 7, 2004
filing date -
Feb 12, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A filter media product and method of making the same wherein at least two independent filter media thicknesses of differing coarse and fine pore sizes are held in face-to-face relationship with the pore sizes being so calculated that the overall average pore size of successive thicknesses is smaller than the pore size of the finest fiber thickness.
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