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. 05, 2010
Filed:
Jun. 08, 2004
Zuyi Zhang, Yokohama, JP;
Teigo Sakakibara, Yokohama, JP;
Motokazu Kobayashi, Yokohama, JP;
Masayuki Yamada, Tokyo, JP;
Shinji Eritate, Kawasaki, JP;
Iko Ito, Takatsuki, JP;
Yoshio Kanzaki, Ikoma-gun, JP;
Zuyi Zhang, Yokohama, JP;
Teigo Sakakibara, Yokohama, JP;
Motokazu Kobayashi, Yokohama, JP;
Masayuki Yamada, Tokyo, JP;
Shinji Eritate, Kawasaki, JP;
Iko Ito, Takatsuki, JP;
Yoshio Kanzaki, Ikoma-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electrolyte membrane made of a phosphate-containing siloxane-based polymer for fuel cell, where the polymer comprises a siloxane backbone and a poly(meth)acrylate chain to which phosphate groups are attached, and the polymer is formed by vinyl polymerization of a silane compound having a (meth)acrylate functional group or a hydrolysis-polycondensation product thereof and a (meth)acrylate compound having a phosphate group, followed by siloxane crosslinking. The electrolyte membrane of a siloxane-based polymer has a high conductivity for a fuel cell.