Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2007-01-26
2010-06-01
Kalafut, Stephen J. (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S006000, C261S101000
Reexamination Certificate
active
07727649
ABSTRACT:
A polymer electrolyte fuel cell comprises a fuel cell stack and a humidifier. The fuel cell stack includes plural cells in which each cell has a pair of electrodes and a proton-conductive electrolyte membrane arranged between the pair of electrodes, wherein an oxidant gas or a fuel gas passes through the humidifier before being fed to the fuel cell stack, and wherein a wet gas containing water or water vapor also passes through the humidifier. In the fuel cell, the humidifier includes a porous separating layer and a hydrophilic water-releasing layer, wherein the separating layer is configured to separate the wet gas from the oxidant gas or the fuel gas in the humidifier, and wherein the hydrophilic water-releasing layer is disposed in a side of the oxidant gas or the fuel gas to the separating layer in the humidifier.
REFERENCES:
patent: 5382478 (1995-01-01), Chow et al.
patent: 6475652 (2002-11-01), Grasso et al.
patent: 6511052 (2003-01-01), Tonkin et al.
patent: 6613467 (2003-09-01), Chizawa et al.
patent: 6766817 (2004-07-01), Da Silva
patent: 6918404 (2005-07-01), Da Silva
patent: 7066586 (2006-06-01), Da Silva
patent: 11-354134 (1999-12-01), None
patent: 2004-206951 (2004-07-01), None
patent: 2005-040675 (2005-02-01), None
Email from Elson Silva, dated May 9, 2008, subject IDS request for US 20070281197.
Imahashi Jinichi
Nishimura Katsunori
Okuda Yuki
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Kalafut Stephen J.
LandOfFree
Polymer electrolyte fuel cell system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polymer electrolyte fuel cell system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymer electrolyte fuel cell system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4231582