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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
7419732 Method for reducing degradation in a fuel cell Sep. 2, 2008
7419731 Fuel container with reticulated material Sep. 2, 2008
7416801 Warming device for fuel cell system Aug. 26, 2008
7416798 Apparatus and methods for generating water in a fuel cell system Aug. 26, 2008
7413823 Method for monitoring the discharge of media out of fuel cell, and a fuel cell system Aug. 19, 2008
7413822 Device and method to release the overpressure of a fuel cell coolant tank Aug. 19, 2008
7413821 Solid polymer electrolyte fuel cell assembly with gas passages in serial communication, and method of supplying reaction gas in fuel cell Aug. 19, 2008
7410712 Procedure for starting up a fuel cell system using a fuel purge Aug. 12, 2008
7410711 Fuel cell output characteristic estimation apparatus and output characteristic estimation method, fuel cell system and vehicle having the same, and fuel cell output control method and data sto Aug. 12, 2008
7410710 Firstout shutdown tracing for fuel processor control system Aug. 12, 2008
7407721 Direct oxidation fuel cell operating with direct feed of concentrated fuel under passive water management Aug. 5, 2008
7405013 Thermoelectric conversion of heat released during use of a power-plant or hydrogen storage material Jul. 29, 2008
7405012 Oscillating gas flow in fuel cells Jul. 29, 2008
7402355 Cooling method for fuel cell Jul. 22, 2008
7402353 Transient controls to improve fuel cell performance and stack durability Jul. 22, 2008
7402352 Fuel cell system and related startup method Jul. 22, 2008
7402351 Carboxylic acid-based ionomer fuel cells Jul. 22, 2008
7399544 Device for recuperating water in a power production unit comprising a fuel cell Jul. 15, 2008
7396604 Centrifugal compressor surge detection using a bi-directional MFM in a fuel cell system Jul. 8, 2008
7396602 Electrochemical generator and method for its utilisation Jul. 8, 2008
7396601 Flow control for multiple stacks Jul. 8, 2008
7395854 Systems and methods for controlling cooling fluid temperature in a fuel cell engine Jul. 8, 2008
7393603 Methods for fuel cell system optimization Jul. 1, 2008
7393602 Method to begin coolant circulation to prevent MEA overheating during cold start Jul. 1, 2008
7390585 Fuel cell system Jun. 24, 2008
7387849 Hydrogen recycle for solid oxide fuel cell Jun. 17, 2008
7381491 Maximizing PEM fuel cell power plant system efficiency at optimum system pressure Jun. 3, 2008
7381487 In-situ removal of electrolyte from gas oxidizer Jun. 3, 2008
7381486 Fuel cell system Jun. 3, 2008
7378170 Electric motive power system for a motor vehicle, and method for using a fuel-cell May. 27, 2008
7378165 System and method for providing electrical power to an equipment rack using a fuel cell May. 27, 2008
7374836 Fuel cell apparatus May. 20, 2008
7374834 Gas flow panels integrated with solid oxide fuel cell stacks May. 20, 2008
7368193 Temperature-based vehicle wakeup strategy to initiate fuel cell freeze protection May. 6, 2008
7368191 Electrode array for use in electrochemical cells May. 6, 2008
7361423 Fuel cell system and method for discharging reaction gas from fuel cell Apr. 22, 2008
7357015 Gas concentration sensor, hydrogen purification unit using this and fuel cell system Apr. 15, 2008
7354671 Fuel cell system having secondary cell Apr. 8, 2008
7354670 Fuel cell with fuel gas adjustment mechanism Apr. 8, 2008
7354669 Operation method and purging system for a hydrogen demand/delivery unit in a fuel cell system Apr. 8, 2008
7354668 Operation state determining apparatus and method for fuel cell Apr. 8, 2008
7349215 Aerogel/PTFE composite insulating material Mar. 25, 2008
7348082 Recursive Kalman filter for feedback flow control in PEM fuel cell Mar. 25, 2008
7344795 Fuel cell system and method of discontinuing same Mar. 18, 2008
7344788 Starting a fuel cell system using ambient air and a low voltage blower Mar. 18, 2008
7342793 Aerogel/PTFE composite insulating material Mar. 11, 2008
7338727 Method of operating a fuel cell to provide a heated and humidified oxidant Mar. 4, 2008
7335433 Vehicle with energy converter Feb. 26, 2008
7335430 Fuel cell system Feb. 26, 2008
7332236 Method and apparatus for controlling a combined heat and power fuel cell system Feb. 19, 2008

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