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. 24, 2005
Filed:
Nov. 23, 2001
Applicant:
Hikaru Okamoto, Hekinan, JP;
Inventor:
Hikaru Okamoto, Hekinan, JP;
Assignee:
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M008/00 ;
U.S. Cl.
CPC ...
Abstract
A solid polymer electrolyte fuel cell includes a polymer electrolyte membrane having proton-conductivity. An anode is disposed on one surface of the polymer electrolyte membrane, and a cathode is disposed on the other surface of the polymer electrolyte membrane. The cathode has a first gas diffusion layer joined to a second gas diffusion layer in the thickness direction of the cathode. The second gas diffusion layer has different characteristic compared to the first gas diffusion layer.