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:
May. 11, 2004
Filed:
Jul. 26, 2001
Applicant:
Inventor:
Tatsuya Kawahara, Toyota, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 8/04 ; H01M 8/10 ;
U.S. Cl.
CPC ...
H01M 8/04 ; H01M 8/10 ;
Abstract
A polymer electrolyte fuel cell includes a high-temperature portion and a low-temperature portion in a cell plane. The fuel cell includes an oxidant gas passage where an oxidant gas flows. An oxidant gas flow is directed from the high-temperature portion to the low-temperature portion of the cell so that water generated during operation recirculates in the oxidant gas passage to permit self-humidification of the fuel cell.