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
2006-11-28
2011-12-06
Lee, Cynthia (Department: 1726)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for control of operation
C429S428000, C429S443000, C429S446000
Reexamination Certificate
active
08071243
ABSTRACT:
In a fuel cell system, during the state where the fuel cell system is not generating an electric power, a fuel gas passage and an oxidizing gas passage are closed, and an inert gas supply device (54, 58) supplies an inert gas to an anode space (111) which is substantially isolated from outside, the anode space including the closed fuel gas passage and a space connected to the closed fuel gas passage, while an air supply device (67, 70) supplies air to a cathode space (112) which is substantially isolated from outside, the cathode space including the closed oxidizing gas passage and a space connected to the closed oxidizing gas passage. With this, the fuel cell system is capable of achieving high energy efficiency and of surely preventing degradation of electrodes during the state where the fuel cell system is not generating the electric power, irrespective of repeated start-up and stop.
REFERENCES:
patent: 5013617 (1991-05-01), Scheffler
patent: 5419978 (1995-05-01), Landau
patent: 2003/0068540 (2003-04-01), Ueda et al.
patent: 8-190929 (1996-07-01), None
patent: 2001-332281 (2001-11-01), None
patent: 2003-303608 (2003-10-01), None
patent: 2005-222707 (2005-08-01), None
patent: 2005-267910 (2005-09-01), None
Translation of JP 08-190929 (publication date Jul. 23, 1996).
Morita Junji
Shibata Soichi
Sugawara Yasushi
Umeda Takahiro
Urata Takayuki
Lee Cynthia
McDermott Will & Emery LLP
Panasonic Corporation
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