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. 08, 2008
Filed:
May. 14, 2002
Christopher James Barnett, Henley on Thames, GB;
John Malcolm Gascoyne, Bucks, GB;
Graham Alan Hards, Reading, GB;
Thomas Robertson Ralph, Reading, GB;
Christopher James Barnett, Henley on Thames, GB;
John Malcolm Gascoyne, Bucks, GB;
Graham Alan Hards, Reading, GB;
Thomas Robertson Ralph, Reading, GB;
Johnson Matthey Public Limited Company, London, GB;
Abstract
The present invention relates to a membrane electrode assembly wherein each gas diffusion substrate comprises a porous electrically conductive gasket member is located on the first and second planar faces of a peripheral portion of the sheet material. The electrocatalyst layers are not present adjacent to the gasket members and the edge of the membrane is sandwiched between the gasket members. The invention further relates to integrated cell assemblies and fuel cell stacks comprising membrane electrode assemblies according to the invention.