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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
6890490 Hydrogen absorbing tank apparatus May. 10, 2005
6890671 Fuel mixing control for fuel cell power plants operating on multiple fuels May. 10, 2005
6890674 Methods and apparatuses for managing fluids in a fuel cell system May. 10, 2005
6890675 Method of operating a fuel cell system, and fuel cell system operable accordingly May. 10, 2005
6887596 Portable disposable fuel-battery unit for a fuel cell system May. 3, 2005
6887598 Control system and method for starting a frozen fuel cell May. 3, 2005
6887599 Procedure for starting up a fuel cell system using a fuel purge May. 3, 2005
6887608 Fuel cell system and related operating method May. 3, 2005
6887609 Fuel cell system and method for operating the fuel cell system May. 3, 2005
6884528 Cogeneration system for a fuel cell Apr. 26, 2005
6884529 Method of heating up a solid polymer electrolyte fuel cell system Apr. 26, 2005
6884530 Method of improving the performance of a direct feed fuel cell Apr. 26, 2005
6884532 Fuel cell system and method for operating the fuel cell system Apr. 26, 2005
6884533 Utilization based power plant control system Apr. 26, 2005
6884534 Electronic by-pass control of gas around the humidifier to the fuel cell stack Apr. 26, 2005
6881507 Method and apparatus for measuring the mass flow of hydrogen in a fuel cell Apr. 19, 2005
6881508 Apparatus and method for controlling a fuel cell system Apr. 19, 2005
6878471 Process for the regeneration of reforming catalysts Apr. 12, 2005
6878472 Air mass flow controller Apr. 12, 2005
6874352 Method and apparatus for locating internal transfer leaks within fuel cell stacks Apr. 5, 2005
6875530 Fuel cell and method of operating the same Apr. 5, 2005
6875539 Combination liquid dispenser and electrochemical cell Apr. 5, 2005
6872379 Method for the reformation of fuels, in particular heating oil Mar. 29, 2005
6872480 Method for operating a fuel cell battery Mar. 29, 2005
6869580 Pyrolysis-based fuel processing method and apparatus Mar. 22, 2005
6869704 Enhancement of electrochemical cell performance Mar. 22, 2005
6869705 Method and device for recovering water from a fuel cell Mar. 22, 2005
6869709 Fuel cell system with improved humidification system Mar. 22, 2005
6866950 Methods and apparatuses for gas separation by pressure swing adsorption with partial gas product feed to fuel cell power source Mar. 15, 2005
6864000 Shutdown procedure to improve startup at sub-freezing temperatures Mar. 8, 2005
6864001 Tetramethyl orthocarbonate fuel cells and systems and methods related thereto Mar. 8, 2005
6864002 Fuel cell system and method for producing electrical energy Mar. 8, 2005
6861167 Fuel cell resuscitation method and apparatus Mar. 1, 2005
6858335 Fuel cell power systems and methods of operating fuel cell power systems Feb. 22, 2005
6858336 Procedure for shutting down a fuel cell system using air purge Feb. 22, 2005
6858337 Reversible fuel cell power plant Feb. 22, 2005
6855442 Fuel cell and method of operating same Feb. 15, 2005
6855447 Fuel cell current collector Feb. 15, 2005
6846585 Method for quick start-up of a fuel processing system using controlled staged oxidation Jan. 25, 2005
6846586 Fuel cell system Jan. 25, 2005
6847518 Membrane electrode assembly for polymer electrolyte fuel cell Jan. 25, 2005
6844094 Gas-supplying apparatus for fuel cell Jan. 18, 2005
6844102 Aqueous based electrolyte slurry for MCFC and method of use Jan. 18, 2005
6841277 Method for operating a fuel cell plant and fuel cell plant Jan. 11, 2005
6841278 Fuel cell performance recovery by cyclic oxidant starvation Jan. 11, 2005
6841279 Fuel cell system Jan. 11, 2005
6841281 Fuel cell system and microorganism inhibiting method Jan. 11, 2005
6841285 Impregnation of ion-exchange membranes to improve electrochemical fuel cell performance Jan. 11, 2005
6841286 Fuel cell system Jan. 11, 2005
6841387 Ex-situ PEM fuel cell testing: towards visualizing gas diffusion Jan. 11, 2005

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