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Class Information
Number: 429/13
Name: Chemistry: electrical current producing apparatus, product, and process > Fuel cell, subcombination thereof or methods of operating > Process of operating
Description: Process of operating the apparatus.










Sub-classes under this class:

Class Number Class Name Patents
429/14 Circulating or feeding electrolyte 111
429/16 Fused or molten electrolyte 146
429/17 Generating, regenerating or recycling reactant 1,018


Patents under this class:
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Patent Number Title Of Patent Date Issued
6517963 Carbon monoxide filter Feb. 11, 2003
6517965 Platinum-ruthenium-nickel alloy for use as a fuel cell catalyst Feb. 11, 2003
6512201 Fuel cell operated welder Jan. 28, 2003
6509112 Direct methanol fuel cell (DMFC) Jan. 21, 2003
6503649 Variable fuel cell power system for generating electrical power Jan. 7, 2003
6500572 Method for operating fuel cells on impure fuels Dec. 31, 2002
6500574 Method and apparatus for a fuel cell based fuel sensor Dec. 31, 2002
6500580 Fuel cell fluid flow plate for promoting fluid service Dec. 31, 2002
6497970 Controlled air injection for a fuel cell system Dec. 24, 2002
6497971 Method and apparatus for improved delivery of input reactants to a fuel cell assembly Dec. 24, 2002
6497972 Fuel cell system and method for controlling operating pressure thereof Dec. 24, 2002
6497974 Fuel cell power system, method of distributing power, and method of operating a fuel cell power system Dec. 24, 2002
6492043 Method and apparatus for detecting a leak within a fuel cell Dec. 10, 2002
6492044 Reactant conditioning for high temperature fuel cells Dec. 10, 2002
6492053 Planar fuel cell assembly Dec. 10, 2002
6488345 Regenerative braking system for a batteriless fuel cell vehicle Dec. 3, 2002
6489048 Operating a fuel cell system during low power demand Dec. 3, 2002
6489049 Electrochemical conversion system Dec. 3, 2002
6485850 Metal-air fuel cell battery system with multiple cells and integrated apparatus for producing power signals with stepped-up voltage levels by selectively discharging the multiple cells Nov. 26, 2002
6485851 Power generation in fuel cells using liquid methanol and hydrogen peroxide Nov. 26, 2002
6485853 Fuel cell system having thermally integrated, isothermal co-cleansing subsystem Nov. 26, 2002
6485854 Gas-liquid separator for fuel cell system Nov. 26, 2002
6479177 Method for improving the cold starting capability of an electrochemical fuel cell Nov. 12, 2002
6475651 Method and apparatus for detecting transfer leaks in fuel cells Nov. 5, 2002
6475652 Fine pore enthalpy exchange barrier for a fuel cell power plant Nov. 5, 2002
6475655 Fuel cell system with hydrogen gas separation Nov. 5, 2002
6471850 Low gravity electrochemical cell Oct. 29, 2002
6472090 Method and apparatus for operating an electrochemical fuel cell with periodic reactant starvation Oct. 29, 2002
6472091 Fuel cell system and method for supplying electric power in a motor vehicle Oct. 29, 2002
6465119 Fuel cell array apparatus and method of fabrication Oct. 15, 2002
6461751 Method and apparatus for operating a fuel cell Oct. 8, 2002
6458478 Thermoelectric reformer fuel cell process and system Oct. 1, 2002
6455180 Flexible method for monitoring fuel cell voltage Sep. 24, 2002
6455181 Fuel cell system with sensor Sep. 24, 2002
6451465 Method for operating a combustor in a fuel cell system Sep. 17, 2002
6451466 Functional integration of multiple components for a fuel cell power plant Sep. 17, 2002
6451471 Conductivity fuel cell collector plate and method of fabrication Sep. 17, 2002
6447940 Evaporation control method for liquid fuel in fuel cell system Sep. 10, 2002
6444337 Fuel cell with low cathodic polarization and high power density Sep. 3, 2002
6444338 Fuel cell system with improved startability Sep. 3, 2002
6440594 Aerosol feed direct methanol fuel cell Aug. 27, 2002
6440595 Fuel cell system Aug. 27, 2002
6436561 Methanol tailgas combustor control method Aug. 20, 2002
6436562 Fuel-cell engine stream conditioning system Aug. 20, 2002
6432177 Air filter assembly for low temperature catalytic processes Aug. 13, 2002
6428915 Apparatus for regulating humidity of process air in fuel cell system Aug. 6, 2002
6428916 Coolant treatment system for a direct antifreeze cooled fuel cell assembly Aug. 6, 2002
6428917 Regulating the maximum output current of a fuel cell stack Aug. 6, 2002
6428918 Fuel cell power systems, direct current voltage converters, fuel cell power generation methods, power conditioning methods and direct current power conditioning methods Aug. 6, 2002
6426158 Method of diluting hydrogen gas exhausted from a fuel cell Jul. 30, 2002

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