Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Process or means for control of operation
Reexamination Certificate
2011-06-14
2011-06-14
Michener, Jennifer (Department: 1728)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for control of operation
C427S115000
Reexamination Certificate
active
07960065
ABSTRACT:
The present invention provides a separator for a fuel cell comprising a resin and a conductive material as constituting components, and sulfonic acid groups imparted to at least one portion at the surface of gas channels by a treatment using a sulfuric acid-containing gas, wherein the resin and the sulfonic acid groups, which are on the surface of the gas channels, are bonded, and a ratio of sulfur atoms in the sulfonic acid groups at the surface of the gas channels as determined by energy-dispersive X-ray spectroscopy is in a range from 0.1 to 4.0 at %, and a method for producing the separator. The separator for a fuel cell of the present invention is excellent in the wettability to water, since sulfonic acid groups are imparted to the resin at the surface of gas channels in the sulfuric acid-containing gas.
REFERENCES:
patent: 4837119 (1989-06-01), Ikoma et al.
patent: 6348279 (2002-02-01), Saito et al.
patent: 6706437 (2004-03-01), Trapp et al.
patent: 2002/0137806 (2002-09-01), Stone et al.
patent: 2003/0054221 (2003-03-01), Saito et al.
patent: 2003/0138686 (2003-07-01), Kotani et al.
patent: 2003/0194594 (2003-10-01), Nakajima et al.
patent: 2004/0146768 (2004-07-01), Nishihata et al.
patent: 64-57568 (1989-03-01), None
patent: 4-238091 (1992-08-01), None
patent: 8-138692 (1996-05-01), None
patent: 8-315810 (1996-11-01), None
patent: 9-283108 (1997-10-01), None
patent: 10-3931 (1998-01-01), None
patent: 10-125300 (1998-05-01), None
patent: 11-297338 (1999-10-01), None
patent: 2001-294692 (2001-10-01), None
patent: 2002-25570 (2002-01-01), None
patent: 2002-270203 (2002-09-01), None
patent: 2003-217608 (2003-07-01), None
patent: 2003-297385 (2003-10-01), None
patent: 2004-127524 (2004-04-01), None
patent: 99-40642 (1999-08-01), None
International Search Report of PCT/JP2006/312182, date of mailing Sep. 19, 2006.
Korean Office Action (Notice of Allowance) dated Jun. 22, 2010, issued in corresponding Korean Patent Application No. 10-2007-7027707.
Hamada Kenichi
Harada Tetsuya
Kanematsu Takayuki
Kawamura Takashi
Dainippon Ink and Chemicals Inc.
Michener Jennifer
Westerman Hattori Daniels & Adrian LLP
Wills Monique
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