Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2008-07-08
2008-07-08
Ryan, Patrick Joseph (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S006000, C429S047000, C029S623300
Reexamination Certificate
active
10477959
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.
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Barnett Christopher James
Gascoyne John Malcolm
Hards Graham Alan
Ralph Thomas Robertson
Johnson Matthey Public Limited Company
Parsons Thomas H.
RatnerPrestia
Ryan Patrick Joseph
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