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:
Nov. 03, 2020
Filed:
Feb. 13, 2017
Toray Industries, Inc., Tokyo, JP;
Japan Vilene Company, Ltd., Tokyo, JP;
Yumiko Okamoto, Otsu, JP;
Daisuke Izuhara, Otsu, JP;
Junpei Yamaguchi, Otsu, JP;
Shusuke Shirai, Otsu, JP;
Tomoyuki Kunita, Otsu, JP;
Hiroaki Umeda, Otsu, JP;
Yuuta Wakamoto, Koga, JP;
Tatsunori Ito, Koga, JP;
Noriko Michihata, Koga, JP;
Takashi Tarao, Koga, JP;
Toray Industries, Inc., Tokyo, JP;
Japan Vilene Company, Ltd., Tokyo, JP;
Abstract
A composite polymer electrolyte membrane has a high proton conductivity even under low-humidity, low-temperature conditions, a reduced dimensional change rate, a high mechanical strength and high chemical stability, and produces a solid polymer electrolyte fuel cell with a high output and high physical durability, a membrane electrode assembly, and a solid polymer electrolyte fuel cell containing the same. This composite polymer electrolyte membrane contains a composite layer composed mainly of a polyazole-containing nanofiber nonwoven fabric (A) and an ionic group-containing polymer electrolyte (B), the polyazole-containing nanofiber nonwoven fabric (A) being basic.