HOLLOW FIBER MEMBRANE AND METHOD FOR MANUFACTURING THEREOF
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United States of America Patent
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Issued Date -
Jan 28, 2016
app pub date -
Sep 10, 2015
filing date -
Oct 18, 2006
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Abstract
The present invention concerns a semipermeable hollow fiber membrane having an outer wall surface, an inner wall surface and an interior lumen extending along the length thereof and having the selective layer on the outer wall surface with a surface roughness below 10 nm. According to the invention the membrane has the smallest pore size on the outer wall surface, and has an outer wall surface which is smooth, continuous and homogeneous in a nanoscopic scale and four to five distinct layers of different pore size and density. Further the present invention concerns a process for manufacturing thereof and the use thereof.
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