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:
Dec. 16, 2014

Filed:

Nov. 17, 2011
Applicants:

Masahiko Sato, Utsunomiya, JP;

Yasuhiro Watanabe, Tokyo, JP;

Shuji Sato, Utsunomiya, JP;

Masaaki Sakano, Utsunomiya, JP;

Inventors:

Masahiko Sato, Utsunomiya, JP;

Yasuhiro Watanabe, Tokyo, JP;

Shuji Sato, Utsunomiya, JP;

Masaaki Sakano, Utsunomiya, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 8/04 (2006.01); H01M 2/38 (2006.01);
U.S. Cl.
CPC ...
Abstract

A cell unit of a fuel cell includes a second separator. A first oxygen-containing gas flow field is formed on a surface of the second separator. An inlet buffer is connected to an inlet of the oxygen-containing gas flow field, and an outlet buffer is connected to an outlet of the first oxygen-containing gas flow field. The inlet buffer includes a first inlet buffer area having a deep groove and a second inlet buffer area, and the outlet buffer includes a first outlet buffer area having a deep groove and a second outlet buffer area. The first inlet buffer area and the first outlet buffer area have different surface areas.


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