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:
Apr. 26, 2011
Filed:
Dec. 04, 2007
Satoshi Mogi, Yamato, JP;
Satoshi Mogi, Yamato, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
There is provided a fuel cell including a fuel cell stack having a fuel cell unit provided with, in order to enable appropriately controlling a wet state before power generation efficiency of the fuel cell is reduced, a polymer electrolyte membrane having one surface thereof provided with an oxidizer electrode and another surface thereof provided with a fuel electrode. In the fuel cell: the fuel cell unit includes plural power generation cell units and a pair of wet state detection cell units; one of the pair of wet state detection cell units includes an excessively humidified state detection cell unit which is more sensitive of an excessively humidified state than the power generation cell units; and another one of the pair of wet state detection cell units includes a dry state detection cell unit which is more sensitive of a dry state than the power generation cell units.