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:
Nov. 24, 2009
Filed:
Mar. 04, 2005
Yoshihiro Hori, Ikoma, JP;
Akihiko Yoshida, Hirakata, JP;
Mikiko Yoshimura, Hirakata, JP;
Makoto Uchida, Hirakata, JP;
Shinji Kinoshita, Yokohama, JP;
Hirokazu Wakabayashi, Yokohama, JP;
Yoshihiro Hori, Ikoma, JP;
Akihiko Yoshida, Hirakata, JP;
Mikiko Yoshimura, Hirakata, JP;
Makoto Uchida, Hirakata, JP;
Shinji Kinoshita, Yokohama, JP;
Hirokazu Wakabayashi, Yokohama, JP;
Panasonic Corporation, Osaka, JP;
Asahi Glass Co., Ltd., Tokyo, JP;
Abstract
To provide a polymer electrolyte membrane having excellent size stability and excellent mechanical strength that can sufficiently prevent the size change due to the swelling condition, the displacement of the polymer electrolyte membrane and the formation of wrinkles during the production of the polymer electrolyte fuel cell, and can prevent damage during the production and operation of the polymer electrolyte fuel cell. In a composite electrolyte membrane including a porous reinforcement layer made of a resin and an electrolyte layer made of a polymer electrolyte and laminated at least one main surface of the reinforcement layer, the direction having a high tensile modulus of elasticity in the reinforcement layer is substantially corresponded with the direction having a high rate of size change in the electrolyte layer.