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:
Mar. 17, 2026
Filed:
Dec. 07, 2022
Applicant:
Fujifilm Corporation, Tokyo, JP;
Inventor:
Koji Hironaka, Kanagawa, JP;
Assignee:
FUJIFILM Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01); B01D 69/12 (2006.01); B01D 71/64 (2006.01); C08G 73/10 (2006.01);
U.S. Cl.
CPC ...
B01D 71/64 (2013.01); B01D 53/228 (2013.01); B01D 69/12 (2013.01); C08G 73/1067 (2013.01);
Abstract
Provided are a polyimide compound including a repeating unit having an aromatic diamine component having a specific structure in which a side-chain benzylic position is regioselectively brominated, a gas separation membrane having a gas separation layer containing the polyimide compound, and a gas separation module and a gas separation apparatus each having the gas separation membrane.
Hironaka, Koji. (2026). Gas separation membrane, gas separation module, gas separation apparatus, and polyimide compound (U.S. Patent No. 12576368). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12576368
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile