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:
Jul. 13, 2010
Filed:
Mar. 06, 2008
Makoto Fukushima, Saitama, JP;
Takashi Yasuo, Hyogo, JP;
Shinichiro Imura, Hyogo, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A membrane electrode assembly includes an electrolyte membrane, an anode disposed on one face of the electrolyte membrane, and a cathode disposed on the other face of the electrolyte membrane. The electrolyte membrane has a non-electrode-forming region where the cathode is not disposed on the surface of the non-electrode-forming region and an electrode-forming region where the cathode is disposed on the surface of the electrode-forming region. The non-electrode-forming region has a thin membrane region where the membrane is thinner than that in the electrode-forming region. The drop in power generation efficiency by water generated at the cathodes is prevented.