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. 05, 2006
Filed:
Jun. 23, 2004
Kazuhito Hatoh, Osaka, JP;
Osamu Sakai, Neyagawa, JP;
Hideo Ohara, Katano, JP;
Junji Niikura, Hirakata, JP;
Hisaaki Gyoten, Shijonawate, JP;
Toshihiro Matsumoto, Ibaraki, JP;
Teruhisa Kanbara, Ikeda, JP;
Kazuhito Hatoh, Osaka, JP;
Osamu Sakai, Neyagawa, JP;
Hideo Ohara, Katano, JP;
Junji Niikura, Hirakata, JP;
Hisaaki Gyoten, Shijonawate, JP;
Toshihiro Matsumoto, Ibaraki, JP;
Teruhisa Kanbara, Ikeda, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An operation method is provided for a polymer electrolyte fuel cell in an optimum operating condition by regulating the cell by a function represented by a gas flow rate and the difference between a saturated steam pressure and an actual steam pressure, by regulating an in-plane temperature distribution obtained by a cooling water flow direction and by the regulation of a cooling water inlet temperature and a cooling water flow amount; a gas supply amount; a supplied moisture amount; and a current density.