Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Process or means for producing – recycling – or treating...
Reexamination Certificate
2007-03-30
2010-11-16
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for producing, recycling, or treating...
C429S408000, C429S410000, C429S411000, C429S415000
Reexamination Certificate
active
07833668
ABSTRACT:
A method of operating a fuel cell system includes providing a fuel inlet stream into a fuel cell stack, operating the fuel cell stack to generate electricity and a hydrogen containing fuel exhaust stream, separating at least a portion of hydrogen contained in the fuel exhaust stream using a cascaded electrochemical hydrogen pump, such as a high temperature, low hydration ion exchange membrane cell stack having at least two membrane cells arranged in process fluid flow series, and providing the hydrogen separated from the fuel exhaust stream into the fuel inlet stream.
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Ballantine Arne Watson
McElroy James F.
Bloom Energy Corporation
Mercado Julian
Ryan Patrick
The Marbury Law Group PLLC
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