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. 13, 2012
Filed:
Mar. 17, 2008
Miho Gemba, Osaka, JP;
Yoichiro Tsuji, Osaka, JP;
Shinsuke Takeguchi, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A polymer electrolyte fuel cell includes: a membrane-electrode assembly () having a polymer electrolyte membrane () and a pair of electrodes () sandwiching a portion of the polymer electrolyte membrane () which portion is located inwardly of a peripheral portion of the polymer electrolyte membrane (); an electrically-conductive first separator () disposed to contact the membrane-electrode assembly () and formed such that a groove-like first reactant gas channel () is formed on one main surface thereof so as to bend; and an electrically-conductive second separator () disposed to contact the membrane-electrode assembly () and formed such that a groove-like second reactant gas channel () is formed on one main surface thereof so as to bend, wherein the first reactant gas channel () is formed such that a width of a portion of the first reactant gas channel () which portion is formed at least a portion (hereinafter referred to as an uppermost stream portionC of the first separator) located between a portion where the first reactant gas channel () extending from an upstream end thereof first contacts the electrodeand a portion where the second reactant gas channel () extending from an upstream end thereof first contacts the electrodeis smaller than a width of a portion of the first reactant gas channel () which portion is formed at a portion other than the uppermost stream portionC of the first separator