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:
Aug. 19, 2008
Filed:
Dec. 03, 2004
Akihiko Yoshida, Hirakata, JP;
Yoichiro Tsuji, Katano, JP;
Masaki Yamauchi, Neyagawa, JP;
Yoshihiro Hori, Ikoma, JP;
Makoto Uchida, Hirakata, JP;
Hisaaki Gyoten, Shijonawate, JP;
Teruhisa Kanbara, Toyonaka, JP;
Akihiko Yoshida, Hirakata, JP;
Yoichiro Tsuji, Katano, JP;
Masaki Yamauchi, Neyagawa, JP;
Yoshihiro Hori, Ikoma, JP;
Makoto Uchida, Hirakata, JP;
Hisaaki Gyoten, Shijonawate, JP;
Teruhisa Kanbara, Toyonaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The present invention provides a gas diffusion layer for a fuel cell which has proper rigidity, is easy to handle and contributes to the improvement of the productivity of fuel cells. A method for producing a gas diffusion layer for a fuel cell including a first step of: impregnating a conductive porous substrate made of a conductive carbon fiber cloth or conductive carbon fiber felt with a first dispersion containing a first fluorocarbon resin having thermoplasticity; and baking the first conductive porous substrate at a first baking temperature of not less than the melting point of the first fluorocarbon resin and less than the decomposition temperature of the first fluorocarbon resin to enhance the rigidity of the conductive porous substrate.