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. 11, 2009
Filed:
Aug. 18, 2004
Susumu Kobayashi, Nara, JP;
Toshihiro Matsumoto, Osaka, JP;
Takeshi Tomizawa, Nara, JP;
Katsuzou Kokawa, Nara, JP;
Teruhisa Kanbara, Osaka, JP;
Susumu Kobayashi, Nara, JP;
Toshihiro Matsumoto, Osaka, JP;
Takeshi Tomizawa, Nara, JP;
Katsuzou Kokawa, Nara, JP;
Teruhisa Kanbara, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A polymer electrolyte fuel cell has an MEA-gasket assembly including an MEA having a polymer electrolyte membrane, a pair of catalyst layers, and a pair of gas diffusion electrodes, and a pair of gaskets provided on peripheral portions of surfaces on both sides of the MEA with gaps between the respectively adjacent gaskets and gas diffusion electrodes. A pair of electrically conductive separators is disposed to sandwich the MEA-gasket assembly with groove-shaped cell reaction gas passages on inner surfaces of the separators, each of the cell reaction gas passages running sequentially across a first portion of a respective gasket of the pair of gaskets, a first portion of a respective gap of the gaps, a respective gas diffusion electrode of the pair of gas diffusion electrodes, a second portion of the respective gap, and a second portion of the respective gasket. Each of the gaps is at least partially closed by a closure.