Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Process or means for producing – recycling – or treating...
Reexamination Certificate
2011-03-22
2011-03-22
Kalafut, Stephen J. (Department: 1727)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for producing, recycling, or treating...
C429S449000, C429S505000, C429S513000
Reexamination Certificate
active
07910251
ABSTRACT:
A fuel cell system comprises: a fuel cell stack (100) where an anode (110) and a cathode (120) are arranged under a state that an electrolyte membrane is positioned therebetween; a fuel tank (300) for storing a fuel; a fuel circulation supply means (400) for circulation-supplying a fuel stored in the fuel tank (300) to the anode of the fuel cell stack; an air supply unit (200) connected to the cathode of the fuel cell stack (100) by an air supply line, for supplying oxygen, etc. to the cathode (120); a sensing unit (500) for measuring a concentration of at least one of fuels supplied to the anode (110) and a control unit for receiving a signal of the sensing unit (500) and informing replacement time of a fuel. According to this, a fuel usage is maximized by informing replacement time of a used fuel and a filter (450) for filtering impurity by detecting a fuel consumption degree and an impurity generation amount.
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English language Abstract of KR 10-2004-0003658.
U.S. Appl. No. 11/538,171 to Ryoo et al., which was filed Oct. 3, 2006.
U.S. Appl. No. 11/548,773 to Park et al., which was filed Oct. 12, 2006.
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English language Abstract of CN 1567627.
English language Abstract of RU 2186019.
Cho Tae-hee
Choi Hong
Heo Seong-Geun
Hwang Yong-Jun
Kim Cheol-Hwan
Kalafut Stephen J.
KED & Associates LLP
LG Electronics Inc.
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