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:
Dec. 13, 2011
Filed:
Mar. 05, 2010
Toshihiro Matsumoto, Osaka, JP;
Yoshiki Nagao, Osaka, JP;
Hiroki Kusakabe, Osaka, JP;
Norihiko Kawabata, Osaka, JP;
Kenji Arai, Osaka, JP;
Toshihiro Matsumoto, Osaka, JP;
Yoshiki Nagao, Osaka, JP;
Hiroki Kusakabe, Osaka, JP;
Norihiko Kawabata, Osaka, JP;
Kenji Arai, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Disclosed is a fuel cell stack which includes: a cell assembly formed of stacked unit cells, each composed of a membrane electrolyte assembly and separators which sandwich the membrane electrolyte assembly; a pair of collector plates A and B which sandwiches the cell assembly; a pair of end plates A and B which sandwiches the cell assembly and the collector plates; and an elastic member disposed between end plate A and collector plate A, wherein end plate A has a convexed portion and a concaved portion on a surface facing collector plate A, and the concaved portion of end plate A holds therein the elastic member, and a bottom surface of the concaved portion includes a second convexed portion and a second concaved portion.