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. 15, 2020
Filed:
Feb. 01, 2017
Toray Industries, Inc., Tokyo, JP;
Seiji Fukuda, Otsu, JP;
Yuko Yabuuchi, Otsu, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
A method of producing an ion-conducting membrane containing a polymer having an ionic group, involves multiple liquid treatment steps in which a precursor membrane is brought into contact with an acid treatment solution or an alkali treatment solution, the precursor membrane containing a polymer in a state in which the aforementioned ionic group forms a salt with an impurity ion, wherein the liquid treatment time in the second and subsequent liquid treatment steps of the multiple liquid treatment steps is shorter than the liquid treatment time in the initial liquid treatment step.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile