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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.:

US 12569812 B1

PDFFull Text
Date of Patent:
Mar. 10, 2026

Filed:

Nov. 08, 2022

Bipolar membrane

Applicant:

Astom Corporation, Tokyo, JP;

Inventors:

Masayuki Kishino, Shunan, JP;

Kouta Yuzuki, Shunan, JP;

Kenji Fukuta, Shunan, JP;

Assignee:

ASTOM CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Fred M Teskin

Int. Cl.
CPC ...
B01D 61/44 (2006.01); B01D 47/12 (2006.01); B01D 61/46 (2006.01); B01D 69/02 (2006.01); B01D 69/10 (2006.01); B01D 69/12 (2006.01); B01D 71/26 (2006.01); B01D 71/28 (2006.01); B01D 71/30 (2006.01); B01J 39/04 (2017.01); B01J 39/20 (2006.01); B01J 41/04 (2017.01); B01J 41/14 (2006.01); B01J 47/12 (2017.01); C08J 5/22 (2006.01); C25B 13/02 (2006.01); C25B 13/08 (2006.01);
U.S. Cl.
CPC ...
B01D 61/445 (2013.01); B01D 61/46 (2013.01); B01D 69/02 (2013.01); B01D 69/1071 (2022.08); B01D 69/1213 (2022.08); B01D 69/125 (2013.01); B01D 71/26 (2013.01); B01D 71/261 (2022.08); B01D 71/262 (2022.08); B01D 71/281 (2022.08); B01D 71/301 (2022.08); B01J 39/04 (2013.01); B01J 39/20 (2013.01); B01J 41/04 (2013.01); B01J 41/14 (2013.01); B01J 47/12 (2013.01); C08J 5/22 (2013.01); C08J 5/2275 (2013.01); C25B 13/02 (2013.01); C25B 13/08 (2013.01); B01D 2325/42 (2013.01); C08J 2325/14 (2013.01); C08J 2325/18 (2013.01); C08J 2353/02 (2013.01); C08J 2423/06 (2013.01); C08J 2423/12 (2013.01); C08J 2427/06 (2013.01);
Abstract

A bipolar membrane in which a cation-exchange membrane and an anion-exchange membrane are joined to each other, wherein a leakage ratio of gluconic acid at 60° C. is not more than 1.0%, and the cation-exchange membrane is supported by a polyolefin reinforcing member and, further, contains a polyvinyl chloride.

Find Patent Forward Citations

Kishino, Masayuki. (2026). Bipolar membrane (U.S. Patent No. 12569812). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12569812

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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