Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2006-04-18
2006-04-18
Barr, Michael (Department: 1746)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S006000, C429S006000
Reexamination Certificate
active
07029783
ABSTRACT:
According to the invention, in a separator (4) for a fuel cell which is produced by: loading a complex compound that is configured by bonding graphite powder by means of a thermosetting resin, into a mold (14); and forming ribs (11) for forming gas passages by the resin molding process, the surfaces of the ribs (11) are etched by an alkaline solution or alkali-treated, a surface resin layer which is formed on the surface of the separator (4) is removed away, and graphite particles showing a plate-like form are exposed from the surfaces of the ribs (11) which function as a contact surface with an electrode, whereby the contact resistance with an electrode is remarkably lowered, so that the performance and efficiency of the fuel cell can be improved.
REFERENCES:
patent: 2002/0004156 (2002-01-01), Mizuno
patent: H4-305083 (1992-10-01), None
patent: H8-180892 (1996-07-01), None
patent: H11-204120 (1999-07-01), None
patent: H11-297338 (1999-10-01), None
patent: 2000-285931 (2000-10-01), None
Otawa Kazuhiko
Sugita Katsunori
Yoshida Tsunemori
Barr Michael
Koda & Androlia
Nippon Pillar Packing Co. Ltd.
Wills Monique
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