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:
Aug. 20, 2013
Filed:
Sep. 22, 2008
Aki Yoshida, Tokyo, JP;
Masashi Hiromitsu, Tokyo, JP;
Aki Yoshida, Tokyo, JP;
Masashi Hiromitsu, Tokyo, JP;
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Abstract
A membrane-catalyst layer assembly with reinforcing films including a solid polymer electrolyte membrane, a catalyst layerformed on each surface of the electrolyte membrane, and a reinforcing filmlocated on each surface of a membrane-catalyst layer assembly having the electrolyte membrane and the catalyst layers. Each of the reinforcing filmshas a frame shape with a central opening. Each of the catalyst layers, except for an outer edge portion, is exposed through the opening. Each reinforcing filmhas a first bonding layerbonded to a membrane-catalyst layer assembly, and a gas barrier layerformed on the first bonding layerto prevent passage of a fuel gas and an oxidant gas.