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:
Jul. 29, 2008
Filed:
Mar. 30, 2004
Shinji Katayama, Tamano, JP;
Kiyohito Asaumi, Tamano, JP;
Hiroaki Aikawa, Kawasaki, JP;
Tsugiyoshi Osakabe, Nagoya, JP;
Mitsuharu Hamamori, Nagoya, JP;
Tatsuhito Kimura, Yokohama, JP;
Koji Saiki, Toyonaka, JP;
Kenji Nonomura, Kakogawa, JP;
Naoya Okada, Tokuyama, JP;
Osamu Ichinose, Takaishi, JP;
Shinji Katayama, Tamano, JP;
Kiyohito Asaumi, Tamano, JP;
Hiroaki Aikawa, Kawasaki, JP;
Tsugiyoshi Osakabe, Nagoya, JP;
Mitsuharu Hamamori, Nagoya, JP;
Tatsuhito Kimura, Yokohama, JP;
Koji Saiki, Toyonaka, JP;
Kenji Nonomura, Kakogawa, JP;
Naoya Okada, Tokuyama, JP;
Osamu Ichinose, Takaishi, JP;
Chlorine Engineers Corp., Ltd., Tokyo, JP;
Tosoh Corporation, Yamaguchi, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Toagosei Co., Ltd., Tokyo, JP;
Kaneka Corporation, Osaka, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Asahi Kasei Chemicals Corporation, Tokyo, JP;
Daiso Co., Ltd., Osaka, JP;
Tokuyama Corporation, Yamaguchi, JP;
Abstract
In a gas diffusion electrode assembly, and in an electrolyzer using the same, a bonding piece having on at least one surface a perfluorosulfonic acid layer, a perfluorosulfonyl fluoride layer or an alkyl ester of perfluorocarboxylic acid layer is positioned at its perfluoro compound layer surface with respect to the gas diffusion electrode assembly. Adjacent gas diffusion electrodes are heat fusion bonded together, or heat fusion bonding is carried out using the bonding piece in a frame form. Adjacent gas diffusion electrodes are sealed up by heat fusion bonding, using a material that is similar to the material that forms the gas diffusion electrodes.