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:
Jul. 29, 2025
Filed:
Sep. 11, 2020
Applicant:
Toyobo Co., Ltd., Osaka, JP;
Inventors:
Takashi Ohkame, Otsu, JP;
Masafumi Shibuya, Otsu, JP;
Assignee:
TOYOBO CO., LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 69/12 (2006.01); B01D 61/02 (2006.01); B01D 67/00 (2006.01); B01D 69/08 (2006.01); B01D 69/10 (2006.01); B01D 71/38 (2006.01); B01D 71/52 (2006.01); C08J 9/36 (2006.01);
U.S. Cl.
CPC ...
B01D 69/1214 (2022.08); B01D 61/025 (2013.01); B01D 67/0006 (2013.01); B01D 67/0093 (2013.01); B01D 69/08 (2013.01); B01D 69/107 (2022.08); B01D 69/125 (2013.01); B01D 71/381 (2022.08); B01D 71/5223 (2022.08); C08J 9/36 (2013.01); C08J 2371/12 (2013.01);
Abstract
A composite membrane comprising a supporting membrane that includes polyphenylene oxide and a separation layer that is disposed on one main surface of the supporting membrane, wherein the polyphenylene oxide is sulfonated on the one main surface of the supporting membrane and the separation layer includes polyvinyl alcohol having an ionic functional group.