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:
Mar. 17, 2015
Filed:
Feb. 02, 2011
Shinsuke Takeguchi, Osaka, JP;
Takeou Okanishi, Nara, JP;
Yoichiro Tsuji, Osaka, JP;
Abstract
A polymer electrolyte fuel cell of the present invention includes a membrane-electrode assembly () and separators (A,B). A plurality of reactant gas channels are formed on a main surface of at least one of the separator (A,B) and a gas diffusion layer (A,B). In a case where among the plurality of reactant gas channels, a reactant gas channel overlapping the peripheral portion of the electrode (A,B) twice is defined as a first reactant gas channel, and a reactant gas channel formed to overlap the peripheral portion of the electrode (A,B) and formed such that the length of a portion overlapping the peripheral portion is longer than a predetermined length is defined as a second reactant gas channel, the second reactant gas channel is formed such that the flow rate of a reactant gas flowing therethrough is lower than that of the reactant gas flowing through the first reactant gas channel or the second reactant gas channel does not exist.