Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2004-04-30
2009-02-10
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C521S027000
Reexamination Certificate
active
07488549
ABSTRACT:
A proton conducting polymer having a repeating unit given by formula (1) below is provided.A proton conducting polymer membrane manufactured using the proton conducting polymer can be more easily manufactured than a conventional fluorine-based membrane and can be commercialized as an automobile fuel cell due to its low cost of production. Also, the proton conducting polymer membrane has high moisture content and does not cause the water flooding at high current density, thereby improving the efficiency of a cell. In addition, the proton conducting polymer membrane enables a fuel cell to stably operate at temperatures of 100° C. or higher, thereby preventing the poisoning of a catalyst and extending the lifetime of the fuel cell.
REFERENCES:
patent: 5155175 (1992-10-01), Mercer et al.
patent: 2003/0194593 (2003-10-01), Fan et al.
patent: 06-111834 (1994-04-01), None
patent: 2002-226575 (2002-08-01), None
Hong Hyun Sil
Kim Keon
Kim You Mee
Lee Heung Chan
Korea Chungang Educational Foundation
Rothwell Figg Ernst & Manbeck
Ryan Patrick
Wills Monique
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