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:
Sep. 01, 2026
Filed:
Mar. 08, 2021
Applicant:
Astom Corporation, Tokyo, JP;
Inventors:
Assignee:
ASTOM CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 69/10 (2006.01); B01D 71/28 (2006.01); B01D 71/30 (2006.01); B01J 39/05 (2017.01); B01J 39/20 (2006.01); B01J 47/127 (2017.01); C08J 5/22 (2006.01);
U.S. Cl.
CPC ...
B01D 67/0006 (2013.01); B01D 69/02 (2013.01); B01D 69/1071 (2022.08); B01D 71/281 (2022.08); B01D 71/301 (2022.08); B01J 39/05 (2017.01); B01J 39/20 (2013.01); B01J 47/127 (2017.01); C08J 5/2243 (2013.01); B01D 2325/22 (2013.01); B01D 2325/24 (2013.01); B01D 2325/26 (2013.01); B01D 2325/42 (2013.01); C08J 2325/12 (2013.01); C08J 2423/06 (2013.01); C08J 2427/06 (2013.01);
Abstract
A cation-exchange membrane using a polyolefin-based substrate with reduced swelling of an ion-exchange resin and a low electrical resistance is provided. The cation-exchange membrane of the present invention includes a substrate made of polyolefin-based woven fabric, and a sulfonic acid group-containing cation-exchange resin. A portion of the cation-exchange membrane other than the substrate has 23 mass % or more to 35 mass % or less of polyvinyl chloride.
Takashina, Naoto. (2026). Cation exchange membrane and method for producing same (U.S. Patent No. 12722125). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12722125
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile