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. 11, 2005
Filed:
Jan. 30, 2002
Susumu Kobayashi, Ikoma, JP;
Masato Hosaka, Osaka, JP;
Kazuhito Hatoh, Osaka, JP;
Hikaru Murakami, Saijo, JP;
Mikio Takezawa, Kanonji, JP;
Takayuki Onishi, Kanonji, JP;
Susumu Kobayashi, Ikoma, JP;
Masato Hosaka, Osaka, JP;
Kazuhito Hatoh, Osaka, JP;
Hikaru Murakami, Saijo, JP;
Mikio Takezawa, Kanonji, JP;
Takayuki Onishi, Kanonji, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An electrolyte membrane-gasket assembly for a fuel cell, including a polymer electrolyte membrane and a gasket, made of a seal material, covering the peripheral portion of the electrolyte membrane, in which the electrolyte membrane has a sequence of a plurality of through-holes in the peripheral portion, and a portion of the gasket covering one surface of the electrolyte membrane and a portion covering the other surface are connected to each other through the through-holes of the electrolyte membrane. This assembly provides a polymer electrolyte fuel cell free from gas cross leakage caused by a detachment of the gasket from the polymer electrolyte membrane. It is preferable to further include catalyst layers carried on both surfaces of the polymer electrolyte membrane, respectively, and protective films covering, respectively, sections spanning from the peripheral portion of each of the catalyst layers to the peripheral portion of the polymer electrolyte membrane.