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:
Jan. 24, 2012
Filed:
Jan. 25, 2007
Applicants:
Shigetaka Hamada, South Glastonbury, CT (US);
Masaaki Kondo, Owariasahi, JP;
Inventors:
Shigetaka Hamada, South Glastonbury, CT (US);
Masaaki Kondo, Owariasahi, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 8/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fuel cell stack include a first group of cells, provided in the vicinity of the overall negative end of a fuel cell stack, and second group of cells, provided throughout the remainder of the fuel cell stack. The first cells have a higher resistance to flooding than the second cells, and the overall polarity of the fuel cell stack is reversed, the end of the stack where the water content is largest is made overall positive.