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
2010-07-12
2011-10-18
Gilliam, Barbara (Department: 1727)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for control of operation
C429S429000
Reexamination Certificate
active
08039156
ABSTRACT:
A fuel cell system and method of removing impurities from a catalyst are provided. The fuel cell system comprises a fuel cell stack comprising a pair of end plates and at least one unit cell. The unit cell contains a gas diffusion layer in contact with a membrane electrode assembly which is constructed of a polymer electrolyte membrane enclosed between two electrodes. The at least one unit cell is stacked between the end plates. The fuel cell system further comprises a voltage supply means and a means of impressing a cyclically varying voltage from the voltage supply means on the fuel cell stack. The cyclically varying voltage removes impurities that adhere to catalysts on the electrode surfaces in the fuel cell stack.
REFERENCES:
patent: 3905884 (1975-09-01), Parenti et al.
patent: 4956071 (1990-09-01), Giuffrida et al.
patent: 5290405 (1994-03-01), Joshi et al.
patent: 5560752 (1996-10-01), Badding et al.
patent: 5635039 (1997-06-01), Cisar et al.
patent: 5871859 (1999-02-01), Parise
patent: 6093500 (2000-07-01), Margiott et al.
patent: 6187464 (2001-02-01), Yasumoto et al.
patent: 6194092 (2001-02-01), Ohara et al.
patent: 6432569 (2002-08-01), Zeilinger et al.
patent: 6589686 (2003-07-01), Ovshinsky et al.
patent: 6605375 (2003-08-01), Ovshinsky et al.
patent: 2002/0038732 (2002-04-01), Sugiura et al.
patent: 2003/0207162 (2003-11-01), Reiser
patent: 2004/0101734 (2004-05-01), Morishima et al.
patent: 60-181286 (1985-09-01), None
patent: 2001-085037 (2001-03-01), None
patent: 2005-527943 (2005-09-01), None
patent: WO 03/083975 (2003-10-01), None
Japanese Notification of Reasons for Rejection, w/ English translation thereof, issued in Japanese Patent Application No. JP 2005-188094 dated Nov. 10, 2009.
Gilliam Barbara
McDermott Will & Emery LLP
Nissan Motor Co,. Ltd.
Roe Claire L
LandOfFree
Fuel cell system and method for removal of impurities from... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fuel cell system and method for removal of impurities from..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel cell system and method for removal of impurities from... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4285520