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.

Date of Patent:
Sep. 28, 2010

Filed:

Oct. 25, 2005
Applicants:

Masaaki Sakano, Utsunomiya, JP;

Masaru Oda, Utsunomiya, JP;

Ryugo Suzuki, Nishiibaraki-gun, JP;

Inventors:

Masaaki Sakano, Utsunomiya, JP;

Masaru Oda, Utsunomiya, JP;

Ryugo Suzuki, Nishiibaraki-gun, JP;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 8/02 (2006.01); H01M 2/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A fuel cell stack has fuel cell units. Each of the fuel cell units includes first and second membrane electrode assemblies and first to third separators sandwiching the first and second membrane electrode assemblies. A positioning mechanism is used for positioning the first to third separators in alignment with each other. The positioning mechanism includes a first protruded portion and a second protruded portion. The first protruded portion protrudes from one surface of the second separator for positioning the first separator. The second protruded portion protrudes from the other surface of the second separator for positioning the third separator.


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