1
Randal M Wenthold, Robert T Hall II, Robert G Andrus, Paul D Brinda, Louis C Cosentino, Robert F Reggin, Daniel T Pigott: Hollow fiber membranes and method of manufacture. Minntech Corporation, Barbara A Wrigley, June 9, 1998: US05762798 (88 worldwide citation)

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 ...


2
Randal M Wenthold, Robert T Hall II, Robert G Andrus, Louis C Cosentino: Hollow fiber membranes and method of manufacture. Minntech Corporation, Barbara A Wrigley, November 4, 1997: US05683584 (33 worldwide citation)

An asymmetric, microporous hollow fiber membrane comprising a polyimide is disclosed. The hollow fiber membrane is chemically inert to aqueous solutions and/or blood, is immediately rewettable after repeated steam and chemical sterilizations, has superior clearance, sieving, and water permeability c ...