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. 21, 2009
Filed:
Aug. 30, 2005
Tetsuji Shimohira, Yokohama, JP;
Shinji Kinoshita, Yokohama, JP;
Hirokazu Wakabayashi, Yokohama, JP;
Ichiro Terada, Ayase, JP;
Yoshihiro Hori, Ikoma, JP;
Tetsuji Shimohira, Yokohama, JP;
Shinji Kinoshita, Yokohama, JP;
Hirokazu Wakabayashi, Yokohama, JP;
Ichiro Terada, Ayase, JP;
Yoshihiro Hori, Ikoma, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Panasonic Corporation, Kadoma-shi, JP;
Abstract
The present invention provides a membrane-electrode assembly for polymer electrolyte fuel cells and a polymer electrolyte fuel cell having excellent dimensional stability and mechanical strength, and having high durability at the time of a power generation. Each of polymer electrolyte membranes () have a regionhaving proton conductivity over the entirety in the thickness direction of the membrane and a regionlocated at the outer peripheral portion of the regionand having a non-porous sheet disposed so that the regionhas no proton conductivity over the entirety in the thickness direction of the membrane, and outer edges of the catalyst layers () are disposed so as to be located in the area