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:
Jun. 12, 2018
Filed:
Sep. 26, 2014
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Assignee:
TORAY INDUSTRIES, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 67/00 (2006.01); B01D 69/02 (2006.01); A61M 1/16 (2006.01); B01D 71/58 (2006.01); B01D 71/68 (2006.01); B01D 69/08 (2006.01); B01D 63/02 (2006.01);
U.S. Cl.
CPC ...
B01D 67/0013 (2013.01); A61M 1/16 (2013.01); B01D 63/02 (2013.01); B01D 67/0016 (2013.01); B01D 69/02 (2013.01); B01D 69/08 (2013.01); B01D 71/58 (2013.01); B01D 71/68 (2013.01); B01D 2323/02 (2013.01); B01D 2325/02 (2013.01); B01D 2325/36 (2013.01);
Abstract
The purpose of the present invention is to provide a porous membrane that has both high water permeability and excellent protein fractionation performance. Provided is a method for producing a porous membrane, said method comprising a step for discharging a membrane-forming dope that contains a hydrophilic polymer from a slit formed in a mouthpiece, and a step for, after the passage of the discharged membrane-forming dope through a dry part, solidifying the membrane-forming dope in a coagulation bath to give a porous membrane, wherein the cross-section area of the slit is 3-30 times inclusive as large as the cross-section area of the solidified porous membrane.