Cross-flow filter membrane and method of manufacturing it
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United States of America Patent
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Aug 24, 2004
Issued Date -
N/A
app pub date -
Nov 18, 2002
filing date -
Aug 4, 1999
priority date (Note) -
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Abstract
The invention provides a membrane for cross-flow filtering of a fluid to be treated, said membrane comprising an inorganic rigid porous support defining at least one flow channel for the fluid to be treated flowing in a given direction, the surface of the channel being covered in at least one separator layer separating out from the fluid to be treated a fraction referred to as the permeate which passes through the layer and the support. According to the invention, the separator layer presents a thickness gradient that decreases in the flow direction of the fluid to be treated.
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