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:
Feb. 18, 2025
Filed:
May. 13, 2021
Applicant:
Fujifilm Corporation, Tokyo, JP;
Inventor:
Akihiro Ikeyama, Minami-ashigara, JP;
Assignee:
FUJIFILM Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 71/68 (2006.01); B01D 67/00 (2006.01); B01D 69/10 (2006.01); B01D 69/12 (2006.01); B01D 71/38 (2006.01); B01D 71/44 (2006.01);
U.S. Cl.
CPC ...
B01D 71/68 (2013.01); B01D 67/0011 (2013.01); B01D 67/0013 (2013.01); B01D 69/1071 (2022.08); B01D 69/125 (2013.01); B01D 71/381 (2022.08); B01D 71/441 (2022.08); B01D 2323/30 (2013.01); B01D 2323/34 (2013.01); B01D 2325/022 (2013.01); B01D 2325/023 (2013.01); B01D 2325/0283 (2022.08); B01D 2325/04 (2013.01); B01D 2325/20 (2013.01); B01D 2325/36 (2013.01);
Abstract
The present invention provides a method for manufacturing a porous membrane having high water permeability and hydrophilicity, which is not easily affected by a treatment such as washing, the method including: preparing, as a substrate, a membrane having a plurality of pores, which includes a water-insoluble resin such as polysulfone and a water-soluble resin including a monomer unit of polyvinylpyrrolidone or a monomer unit of polyvinyl alcohol; and irradiating the substrate with an electron beam in the presence of an aqueous solvent to crosslink at least a part of the water-soluble resin.