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:
Jan. 13, 2009

Filed:

Dec. 22, 2004
Applicants:

Toshiya Wakahoi, Utsunomiya, JP;

Tetsuya Komori, Utsunomiya, JP;

Masaaki Nanaumi, Utsunomiya, JP;

Junichi Yano, Utsunomiya, JP;

Inventors:

Toshiya Wakahoi, Utsunomiya, JP;

Tetsuya Komori, Utsunomiya, JP;

Masaaki Nanaumi, Utsunomiya, JP;

Junichi Yano, Utsunomiya, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/90 (2006.01); H01M 2/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A membrane electrode assembly includes an anode, a cathode, and a solid polymer electrolyte membrane interposed between the anode and the cathode. The anode and the cathode include gas diffusion layers and electrode catalyst layers. Mixture layers are provided over predetermined areas H around surfaces of the electrode catalyst layers. The electrode catalyst layers and adhesive layers are mixed in the mixture layers, respectively.


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