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:
Aug. 23, 2011
Filed:
Jun. 13, 2005
Yoichiro Tsuji, Osaka, JP;
Eiichi Yasumoto, Kyoto, JP;
Kazuhito Hatoh, Osaka, JP;
Shinsuke Takeguchi, Osaka, JP;
Hiroki Kusakabe, Osaka, JP;
Shigeyuki Unoki, Osaka, JP;
Shinichi Arisaka, Osaka, JP;
Yoichiro Tsuji, Osaka, JP;
Eiichi Yasumoto, Kyoto, JP;
Kazuhito Hatoh, Osaka, JP;
Shinsuke Takeguchi, Osaka, JP;
Hiroki Kusakabe, Osaka, JP;
Shigeyuki Unoki, Osaka, JP;
Shinichi Arisaka, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A method of preserving a PEFC stack of the present invention is a method of preserving a PEFC stack that is provided with an oxidizing agent passage having an inlet and an outlet and extending through a cathode and a reducing agent passage having an inlet and an outlet and extending through an anode. The method comprises preserving the polymer electrolyte fuel cell stack in an uninstalled state under a condition in which an oxygen concentration within the oxidizing agent passage and within the reducing agent passage is lower than an oxygen concentration in atmospheric air.