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. 21, 2001
Filed:
Mar. 16, 1999
Applicant:
Inventors:
Masayoshi Iwase, Anjo, JP;
Hitoshi Hamada, Susono, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 8/04 ;
U.S. Cl.
CPC ...
H01M 8/04 ;
Abstract
A fuel cell has a plurality of passages for conveying a fluid in a stack formed of a plurality of unit cells. The connection of the passages is changed in accordance with the operating condition of the fuel cell. If the passage connection is thus changed, the passage resistance in the stack changes, so that an optimal performance of the fuel cell can be achieved in accordance with the operating condition thereof.