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. 14, 2013
Filed:
Mar. 06, 2009
Koji Matsuoka, Moriguchi, JP;
Koji Matsuoka, Moriguchi, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A membrane electrode assembly includes an solid polymer electrolyte membrane, an anode, and a cathode. The cathode has a stacked body of a catalyst layer and a gas diffusion layer. The catalyst layer has platinum-cobalt-supporting carbon particles and an ion conductor. The ratio (P2/P1) of the pore volume P2 (ml/g) per gram of catalyst layer in a second micro-pore diameter, ranging from 0.1 μm to less than 1 μm, over the pore volume P1 per gram of catalyst layer in a first micro-pore diameter, ranging from 0.01 μm to less than 0.1 μm, is in a range of 3.8 to 8.3.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile