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:
Jun. 23, 2015
Filed:
Dec. 16, 2010
Kousuke Kawajiri, Kariya, JP;
Keiji Hashimoto, Kariya, JP;
Satoshi Futami, Kariya, JP;
Tomokazu Hayashi, Seto, JP;
Kousuke Kawajiri, Kariya, JP;
Keiji Hashimoto, Kariya, JP;
Satoshi Futami, Kariya, JP;
Tomokazu Hayashi, Seto, JP;
Toyota Shatai Kabushiki Kaisha, Aichi, JP;
Abstract
A membrane electrode assembly () formed by a solid electrolyte membrane () and electrode catalyst layers () is interposed between a pair of frames (). Gas diffusion layers () are laminated onto the surface of the electrode catalyst layers (). A first gas passage forming member () is laminated onto the surface of the gas diffusion layer () while a second gas passage forming member () is laminated onto the surface of the gas diffusion layer (). Separators () contact surfaces of the frame () and the first and second gas passage forming member (). A plurality of first and second straight grooves () are formed on the first gas passage forming member (), such that the widths (w, w) differ from each other, and cross-sectional areas of the paths for the first and second gas passages (T, T) differ from each other.