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:
Oct. 13, 2026
Filed:
May. 16, 2022
Applicant:
Nitto Denko Corporation, Osaka, JP;
Inventors:
Toshiyuki Kawashima, Osaka, JP;
Shunsuke Nomi, Osaka, JP;
Yasuyuki Sakakibara, Osaka, JP;
Jianhua Fang, Shanghai, CN;
Jingqiu Yu, Hubei, CN;
Xiaoxia Guo, Shanghai, CN;
Assignee:
NITTO DENKO CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01); B01D 71/64 (2006.01);
U.S. Cl.
CPC ...
B01D 71/641 (2022.08); B01D 2257/504 (2013.01); B01D 2258/06 (2013.01);
Abstract
An object of the present invention is to provide a gas separation membrane containing a novel sulfonated polyimide and having superior gas separation performance. The gas separation membrane of the present invention contains a sulfonated polyimide represented by the following general formula (1):
Kawashima, Toshiyuki. (2026). Gas separation membrane (U.S. Patent No. 12758926). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12758926
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile