The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 2021
Filed:
May. 22, 2009
Applicants:
Reinhold Buck, Alleshausen, DE;
Jenny Deibert, Rottweil, DE;
Arnd Wochner, Dottenhaussen, DE;
Inventors:
Assignee:
GAMBRO LUNDIA AB, Lund, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 71/68 (2006.01); B01D 69/08 (2006.01);
U.S. Cl.
CPC ...
B01D 71/68 (2013.01); B01D 69/08 (2013.01); B01D 69/087 (2013.01); B01D 2323/06 (2013.01); B01D 2323/12 (2013.01); B01D 2325/02 (2013.01); B01D 2325/20 (2013.01); B01D 2325/34 (2013.01);
Abstract
A semipermeable asymmetric hollow fiber membrane is provided, based on a hydrophobic polymer, such as polyethersulfone or polysulfone, and on a hydrophilic polymer, such as PVP. The PVP polymer comprises a high molecular weight component and a low molecular weight component. The membrane has a significantly improved permeability and selectivity, based on its structure, composition, and the method of manufacture of the membrane A process for manufacturing such a membrane by a solvent phase inversion spinning process is also provided.