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:
Sep. 29, 2009
Filed:
Aug. 25, 2004
Applicants:
Yoshihiko Nakano, Kanagawa-ken, JP;
Hideo Oota, Tokyo, JP;
Inventors:
Yoshihiko Nakano, Kanagawa-ken, JP;
Hideo Oota, Tokyo, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 8/00 (2006.01); H01M 4/00 (2006.01); H01M 8/10 (2006.01); H01M 8/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is to provide an electrolyte membrane for fuel cell of low fuel permeability and high proton conductivity and to provide a fuel cell comprising the electrolyte membrane. According to the present invention, a polymer membrane including repeating unit of five-membered heterocyclic rings is used as an electrolyte membrane of the fuel cell. The electrolyte membrane has high proton conductivity with free from moves of the fuel or water when the proton conducts in the electrolyte membrane.