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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:

Patent Number Title Of Patent Date Issued
7575822 Method of optimizing operating efficiency of fuel cells Aug. 18, 2009
7572530 SORFC power and oxygen generation method and system Aug. 11, 2009
7572529 Method and system for starting up fuel cell stack at subzero temperatures, and method of designing fuel cell stack Aug. 11, 2009
7569296 Method for operating vehicle-mounted fuel cell stack Aug. 4, 2009
7569293 Methods and systems for efficient operation of integrated fuel cell-fuel reformer systems Aug. 4, 2009
7569292 Solid oxide fuel cell Aug. 4, 2009
7569290 Flat panel direct methanol fuel cell and method for making the same Aug. 4, 2009
7565224 Energy distribution network Jul. 21, 2009
7563529 Energy storage system Jul. 21, 2009
7563525 Electric reaction technology for fuels processing Jul. 21, 2009
7563524 Fuel cell system Jul. 21, 2009
7560188 Nickel-metal hydride rechargeable battery Jul. 14, 2009
7560183 Control of RH conditions in electrochemical conversion assembly Jul. 14, 2009
7560182 Reaction gas supply apparatus and method for fuel cell Jul. 14, 2009
7560181 Fuel cell system and method of operating the same Jul. 14, 2009
7560179 Fuel cell apparatus and method for controlling fuel Jul. 14, 2009
7557532 Voltage supplying apparatus using a fuel cell Jul. 7, 2009
7556880 Compositional and structural gradients for fuel cell electrode materials Jul. 7, 2009
7556874 Fuel cell temperature control by evaporative cooling Jul. 7, 2009
7553575 Fuel cell humidification system and method Jun. 30, 2009
7553569 Dynamic cathode gas control for a fuel cell system Jun. 30, 2009
7553568 High efficiency load-following solid oxide fuel cell systems Jun. 30, 2009
7550218 Apparatus for producing water onboard of a craft driven by a power plant Jun. 23, 2009
7550214 Fuel cell system and fuel cell operating method Jun. 23, 2009
7544430 Online detection of stack crossover rate for adaptive hydrogen bleed strategy Jun. 9, 2009
7537848 Method for model based exhaust mixing control in a fuel cell application May. 26, 2009
7537847 Fuel cell system and method for operating same May. 26, 2009
7534511 Thermal control of fuel cell for improved cold start May. 19, 2009
7534510 Fuel compositions May. 19, 2009
7532987 Fuel-cell power generation system and control method therefor May. 12, 2009
7531264 Fuel cell stack with even distributing gas manifolds May. 12, 2009
7531259 Fuel cell cooling and water management system May. 12, 2009
7531258 Fuel cell system and method for discharging reaction gas from fuel cell May. 12, 2009
7531253 Method for monitoring the operational state of a fuel cell stack May. 12, 2009
7527882 Method for detecting undersupply of fuel gas and method for controlling fuel cell May. 5, 2009
7526346 Nonlinear thermal control of a PEM fuel cell stack Apr. 28, 2009
7525072 Heated O-ring Apr. 28, 2009
7524571 Method for controlling nitrogen fraction in a fuel cell Apr. 28, 2009
7520916 Partial pressure swing adsorption system for providing hydrogen to a vehicle fuel cell Apr. 21, 2009
7519453 Energy distribution network Apr. 14, 2009
7514166 Reduction of SOFC anodes to extend stack lifetime Apr. 7, 2009
7514165 Fuel cell system fluid recovery Apr. 7, 2009
7507488 System and method for drying a fuel cell stack at system shutdown Mar. 24, 2009
7504168 Systems for controlling operation of a fuel cell electricity generating system responsive to detection of abnormalities Mar. 17, 2009
7494730 Apparatus for cooling fuel cell Feb. 24, 2009
7491459 Polymer electrolyte fuel cell Feb. 17, 2009
7491455 Method to startup a fuel cell stack without battery derived compressor power Feb. 17, 2009
7488547 Fuel cell, components and systems Feb. 10, 2009
7485388 Fuel cell Feb. 3, 2009
7485382 Parallel stack antifreeze system Feb. 3, 2009

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