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:
May. 08, 2012
Filed:
May. 15, 2007
Koshi Takata, Yokosuka, JP;
Takahito Osada, Yokohama, JP;
Atsushi Miyazawa, Kamakura, JP;
Motoharu Obika, Yokohama, JP;
Motoki Yaginuma, Yokohama, JP;
Koshi Takata, Yokosuka, JP;
Takahito Osada, Yokohama, JP;
Atsushi Miyazawa, Kamakura, JP;
Motoharu Obika, Yokohama, JP;
Motoki Yaginuma, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Abstract
A fuel cell stack includes a membrane electrode assembly including an electrolyte membrane and electrode catalyst layers sandwiching the electrolyte membrane; metal separators that define gas channels, the metal separators being respectively disposed at both surfaces of the membrane electrode assembly; a current collector from which electromotive force is derived, the current collector being in contact with at least one of the metal separators; and joining parts that join the metal separator to the current collector at portions where the metal separator contacts the current collector.