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Class Information
Number: 429/413
Name: Chemistry: electrical current producing apparatus, product, and process >

Sub-classes under this class:

Class Number Class Name Patents
429/ Current producing cell, elements, subcombinations and compositions for use therewith and adjuncts 0
429/1 Having polarity safety feature 127
429/10 Having magnetic field feature 61
429/101 Fluid active material or two-fluid electrolyte combination having areas of nonmixture 529
429/11 Current production dependent upon temperature differential between a pair of electrodes 37
429/110 Deferred action type 48
429/12 Fuel cell, subcombination thereof or methods of operating 751
429/120 With heat exchange feature 678
429/121 Adjuncts in combination with or for connection to an external electrical electric current carrying member of a battery other than terminal protectors, e.g., terminal adapter, caps, lifters, etc. and connectors per se 325
429/122 Current producing cell, elements, subcombinations and compositions for use therewith and adjuncts 402
429/2 Having living matter, e.g., microorganism, etc. 75
429/3 Having pulse feature 28
429/4 With sonic or ultrasonic feature 21
429/47 Having earth feature 10
429/48 Preserving cell in storage feature 105
429/49 Regenerating, salvage or repair feature other than only addition of electrolyte to cell or electrically charging per se 211
429/5 Radio active material containing 37
429/50 Process of cell operation 356
429/53 Means externally releasing internal gas pressure from closed cell, i.e., valve etc. 365
429/57 Sealed cell having gas prevention or elimation means 247
429/6 With pressure equalizing means for liquid immersion operation 15
429/61 With control means responsive to battery condition sensing means 424
429/65 Terminal protector other than seal through casing 139
429/66 Having means to accommodate electrode expansion 163
429/67 Having movable mechanical means to provide relative motion between electrode and electrolyte 47
429/7 With nonbattery electrical component electrically connected within cell casing other than testing or indicating components 464
429/71 With system having means to move ventilating fluid 95
429/72 Having specified venting, feeding or circulation structure (other than feeding or filling for activating deferred action-type battery) 341
429/8 Having disparate nonelectrical function 49
429/9 Having diverse cells or diverse removable cells in a support means 259
429/90 With measuring, testing, or indicating means 359
429/94 Plural concentric or single coiled electrode 676
429/95 Having means for draining or removing electrolyte from a cell other than filler opening 28
429/96 Cell support for removable cell 537

Patents under this class:

Patent Number Title Of Patent Date Issued
8709668 Hydrogen generation device and fuel cell system Apr. 29, 2014
8691458 Fuel cell system Apr. 8, 2014
8685577 Fuel cell system and method of controlling the fuel cell system Apr. 1, 2014
8673511 Apparatus including sodium chlorate electrolysis cell connected by water cooled catalytic reactor to phosphoric acid fuel cell Mar. 18, 2014
8669013 Integrated hydromethanation fuel cell power generation Mar. 11, 2014
8663855 Fuel cell protection device Mar. 4, 2014
8663854 Fuel cell system with a compensation region for moistening and/or tempering Mar. 4, 2014
8657266 Separator roll membrane coating for fuel cell humidifier Feb. 25, 2014
8658322 Fuel cell system Feb. 25, 2014
8652694 Water recovery assembly for transferring water from fuel cell cathode exhaust Feb. 18, 2014
8642194 Fuel cell system Feb. 4, 2014
8623561 Acid dilution device in condenser of phosphoric acid fuel cell Jan. 7, 2014
8623564 Method for remedial action in the event of the failure of the primary air flow measurement device in a fuel cell system Jan. 7, 2014
8617753 Fuel cell system with voltage sensor Dec. 31, 2013
8614022 Solid oxide fuel cell Dec. 24, 2013
8614030 Fuel cell direct water injection Dec. 24, 2013
8603686 Method for remedial action in the event of the failure of the compressor bypass valve in a fuel cell system Dec. 10, 2013
8597806 Method for operating fuel cells with passive reactant supply Dec. 3, 2013
8580444 Hydrogen discharge system for fuel cell system Nov. 12, 2013
8580443 Method and arrangement for controlling anode recirculation for fuel cells using a steam jet ejector Nov. 12, 2013
8563180 SOFC hot box components Oct. 22, 2013
8563181 Fuel cell, method for operating fuel cell and fuel cell system Oct. 22, 2013
8557466 Fuel cell including separator with gas flow channels Oct. 15, 2013
8557459 Fuel cell system, method of stopping operation of the fuel cell system, and method of starting operation of the fuel cell system Oct. 15, 2013
8557454 Fuel cell system and reverse flow relief valve Oct. 15, 2013
8551664 Fuel cell humidifier diagnostic Oct. 8, 2013
8551665 Supply system and warning device for a fuel cell stack and method for controlling the supply system Oct. 8, 2013
8546029 Solid oxide fuel cell Oct. 1, 2013
8541139 Humidifier including an auxiliary humidifier utilzing electroosmosis Sep. 24, 2013
8524403 Water content estimation apparatus for fuel cell and fuel cell system Sep. 3, 2013
8518593 Method for controlling operation of fuel cell at low temperature Aug. 27, 2013
8507140 Hydrogen-recyclable fuel cell Aug. 13, 2013
8507137 Separator plate configuration for a fuel cell Aug. 13, 2013
8497042 Fuel cell system Jul. 30, 2013
8481218 Hydrogen exhaust system for fuel cell vehicle Jul. 9, 2013
8475964 Membrane-electrode assembly, fuel cell, and fuel cell system Jul. 2, 2013
8470479 Sensorless relative humidity control in a fuel cell application Jun. 25, 2013
8460833 Open type fuel cell system with unreacted material removing function Jun. 11, 2013
8450018 Method to automatically enable/disable stack reconditioning procedure based on fuel cell stack parameter estimation May. 28, 2013
8445147 Fuel humidifier assembly for use in high temperature fuel cell systems May. 21, 2013
8435689 Dual function heat exchanger for start-up humidification and facility heating in SOFC system May. 7, 2013
8431275 Water management of PEM fuel cell stacks using surface active agents Apr. 30, 2013
8431276 Using an effectiveness approach to model a fuel cell membrane humidification device Apr. 30, 2013
8431277 Fuel cell system and generation control device Apr. 30, 2013
8420270 Fuel cell system Apr. 16, 2013
8415060 In-vehicle fuel cell system Apr. 9, 2013
8408524 Apparatus for humidifying a gas flow Apr. 2, 2013
8404391 Method of operating polymer electrolyte fuel cell Mar. 26, 2013
8399142 Relative humidity profile control strategy for high current density stack operation Mar. 19, 2013
8384342 Fuel cell system and control method thereof Feb. 26, 2013

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