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. 30, 2014
Filed:
Mar. 15, 2011
Takeou Okanishi, Nara, JP;
Naotsugu Koashi, Kyoto, JP;
Yoichiro Tsuji, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A polymer electrolyte fuel cell of the present invention comprises a membrane-electrode assembly (), a first separator (), and a second separator (); the first separator () having a groove-shaped first reaction gas channel () on one main surface of the first separator () which contacts the first electrode () such that a plurality of straight-line-shaped first rib portions () run along each other; the second electrode () having a groove-shaped second reaction gas channel () on one main surface of the second electrode () which contacts the second separator () such that a plurality of straight-line-shaped second rib portions () run along each other; a ratio of a first reaction gas channel width of at least an upstream portion () of the first reaction gas channel () with respect to a second rib portion () is greater than 0 and not greater than 1.