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
2011-01-04
2011-01-04
Michener, Jennifer (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...
C429S457000
Reexamination Certificate
active
07862936
ABSTRACT:
A bipolar plate for a fuel cell is disclosed including a first unipolar plate having an active surface with a plurality of flowfield channels formed therein. The first unipolar plate further includes an inlet header disposed at a first end of the unipolar plate that is in communication with the active surface, and an outlet header disposed at a second end of the unipolar plate having an exhaust opening formed therethrough. A peripheral edge of the exhaust opening is chamfered and is also in communication with the active surface. The chamfered exhaust opening forms a water removal channel in the bipolar plate. A fuel cell stack including the bipolar plate is also disclosed.
REFERENCES:
patent: 7687181 (2010-03-01), Osenar et al.
patent: 2003/0180598 (2003-09-01), Fischer et al.
patent: 2006/0105219 (2006-05-01), Anderson
Falta Steven R.
Owejan Jon P.
Rapaport Pinkhas A.
Tighe Thomas W.
Trabold Thomas A.
Clemens Fraser
GM Global Technology Operations Inc.
Martin & Miller LLC
Michener Jennifer
Miller J. Douglas
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