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:
Dec. 23, 2008
Filed:
Apr. 08, 2004
Shyusei Ohya, Ichihara, JP;
Yuuichi Fujii, Ichihara, JP;
Makoto Matsuo, Ichihara, JP;
Jun Takagi, Ichihara, JP;
Shyusei Ohya, Ichihara, JP;
Yuuichi Fujii, Ichihara, JP;
Makoto Matsuo, Ichihara, JP;
Jun Takagi, Ichihara, JP;
Ube Industries, Ltd., , JP;
Abstract
A metal-supported porous carbon film wherein metal fine particles with a mean particle diameter of 0.7-20 nm are dispersed and supported on pore surface walls, fuel cell electrodes employing the metal-supported porous carbon film, a membrane-electrode assembly comprising the fuel cell electrodes bonded on both sides of a polymer electrolyte film, and a fuel cell comprising the fuel cell electrode as a constituent element. The support structure is such that metal fine particles having a controlled particle size are uniformly supported to allow effective utilization of the metal-based catalyst, and the fabrication steps are simple.