Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2004-05-14
2009-02-24
Alejandro, Raymond (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C428S038000, C428S039000, C427S115000, C427S407100
Reexamination Certificate
active
07494734
ABSTRACT:
A fuel cell or electrochemical cell has a catalytic electrode and an electrically conductive contact element facing the electrode. The electrically conductive contact element conducts electrical current from the electrode and has a surface that includes a plurality of passivated regions and a plurality of non-passivated regions dispersed among the passivated regions. The surface is further coated with an electrically conductive, corrosion resistant coating. Methods include treating the electrically conductive contact element by passivation to resist corrosion while still maintaining electrical conductivity of the element.
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Michael C. Kimble, Alan S. Woodman, and Everett B. Anderson, Physical Sciences, Inc., Andover, MA, Characterization of Corrosion-Protective Methods for Electrically Conductive Coatings on Aluminum, American Electroplaters and Surface Finishers Society, AESF SUR/FIN '99 Proceedings, Jun. 21-24, 1999, pp. 1-12.
Brady Brian K
Fuss Robert L
Lee James H
Alejandro Raymond
General Motors Corporation
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