05762798 is referenced by 88 patents and cites 67 patents.

An asymmetrical, microporous, hollow fiber membrane is made from a polymeric dope mixture of polysulfone and polyvinyl pyrrolidone dissolved in an aprotic solvent. The physical morphology of the hollow fiber membrane, i.e., the asymmetric microporous wall, is rapidly formed by passing the polymeric dope mixture through an outer annular orifice of a tube-in-orifice spinneret while simultaneously passing a precipitating solution through the central tube of the spinneret. The emerging hollow fiber travels substantially downward for about 0.01-10 m before submersion into a quenching bath. The asymmetrical, microporous, hollow fiber membrane is biocompatible and suitable for use in, for example, dialysis, hemodialysis, ultrafiltration, and water filtration applications.

Title
Hollow fiber membranes and method of manufacture
Application Number
958027
Publication Number
5762798
Application Date
May 6, 1993
Publication Date
June 9, 1998
Inventor
Daniel T Pigott
Minnetonka
MN, US
Robert F Reggin
Annandale
MN, US
Louis C Cosentino
Deephaven
MN, US
Paul D Brinda
Robbinsdale
MN, US
Robert G Andrus
Minneapolis
MN, US
Robert T Hall II
Welch
MN, US
Randal M Wenthold
Belle Plaine
MN, US
Agent
Barbara A Wrigley
Assignee
Minntech Corporation
MN, US
IPC
B01D 69/08
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