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:
Jan. 20, 2009
Filed:
Jan. 07, 2004
Shinsuke Takeguchi, Osaka, JP;
Kazuhito Hatoh, Osaka, JP;
Hideo Ohara, Katano, JP;
Hisaaki Gyoten, Shijonawate, JP;
Shinsuke Takeguchi, Osaka, JP;
Kazuhito Hatoh, Osaka, JP;
Hideo Ohara, Katano, JP;
Hisaaki Gyoten, Shijonawate, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A fuel cell includes a stack of unit cells, each including: a hydrogen-ion conductive polymer electrolyte membrane; an anode and a cathode sandwiching the polymer electrolyte membrane; an anode-side conductive separator plate having a gas flow path for supplying and discharging a fuel gas to and from the anode; and a cathode-side conductive separator plate having a gas flow path for supplying and discharging an oxidant gas to and from the cathode. At least one of the anode-side and cathode-side separator plates has, in one face thereof, a plurality of independent gas flow channels, which constitute the gas flow path. When the fuel cell is operated at low load, the fuel gas or the oxidant gas is supplied to one or more of the plurality of independent gas flow channels, so that the fuel cell is capable of securing sufficient gas velocity.