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:
Apr. 16, 2024
Filed:
Oct. 05, 2020
Agc Inc., Tokyo, JP;
Shintaro Hayabe, Tokyo, JP;
Osamu Homma, Tokyo, JP;
Yasushi Yamaki, Tokyo, JP;
Tatsuya Miyajima, Tokyo, JP;
Takuo Nishio, Tokyo, JP;
AGC Inc., Tokyo, JP;
Abstract
An ion exchange membrane containing a fluorinated polymer, wherein in a case where by Raman spectroscopy, polarized light orthogonal to the thickness direction of the ion exchange membrane is irradiated to obtain a spectrum chart, whereby the ratio of the peak area a2 of Raman shift 680 to 760 cmto the peak area al of Raman shift 1,025 to 1,095 cmis taken as A1, and by Raman spectroscopy, to a cross section in the thickness direction of the ion exchange membrane, polarized light parallel with the thickness direction is irradiated to obtain a spectrum chart, whereby the ratio of the peak area b2 of Raman shift 920 to 1,025 cmto the peak area b1 of Raman shift 1,025 to 1,095 cmis taken as B1, B1/A1 is at least 1.05.