Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Reexamination Certificate
2003-04-15
2008-08-05
Ryan, Patrick Joseph (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
C429S006000, C429S047000
Reexamination Certificate
active
07407721
ABSTRACT:
A passive direct oxidation fuel cell system, which uses a high concentration fuel such as neat methanol as a direct feed to an anode aspect of the fuel cell, is provided. The fuel cell includes a passive water management capability, achieved by the combined functions of controlled fuel dosing, effective push back of liquid water from the cathode through the membrane electrolyte by a hydrophobic microporous layer well bonded to the cathode catalyst and the use of a thin ionomeric membrane. The rate of fuel delivery is controlled by a passive fuel transport barrier. Carbon dioxide management techniques are also provided.
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Becerra Juan J.
Gottesfeld Shimshon
Hirsch Robert S.
Kovacs Frank W.
Ren Xiaoming
Cesari and McKenna LLP
MTI MicroFuel Cells Inc.
Parsons Thomas H.
Ryan Patrick Joseph
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