Membrane module
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United States of America Patent
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Mar 8, 2005
Grant Date -
May 1, 2003
app pub date -
Jul 31, 2002
filing date -
Feb 8, 2000
priority date (Note) -
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Abstract
A membrane module for a device used to separate substance mixtures in a cross current method includes a number of tubular membranes which encircle, at least in sections, a common axis in an essentially helical manner and which are provided for forming an essentially disk shaped module. At least two of the tubular membranes encircle a common spiral axis in a helical manner, the membranes being preferably twisted like a cable, at least along the progression of a part of their essentially helical encircling in order to form a tubular membrane strand.
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