ClassID:

213455

H01M8/04238 - CPC Classification

Classification description:

Fuel cells; Manufacture thereof; Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells Depolarisation

Recent Application in this class:
#1
20240079620
2024-03-07

Electrolyte balancing strategies for flow batteries

#2
20220085398
2022-03-17

Electrolyte balancing strategies for flow batteries

#3
20210384535
2021-12-09

Fuel cell start up method

#4
20210036348
2021-02-04

Fuel cell and fuel cell stack

#5
20200328438
2020-10-15

Fuel cell start up method

#6
20200119376
2020-04-16

Fuel cell purging method

#7
20190372138
2019-12-05

Fuel cell start up method

#8
20190214664
2019-07-11

Cell reversal diagnostics for a fuel cell stack

#9
20190207236
2019-07-04

Electrolyte balancing strategies for flow batteries

#10
20190207232
2019-07-04

Overload Protection Device

#11
20190190046
2019-06-20

Fuel cell system and control method of fuel cell system

#12
20190140292
2019-05-09

System and method for controlling performance of fuel cell stack

#13
20180331382
2018-11-15

Method and system for improving the energy efficiency and for reconditioning of a vanadium flow battery

#14
20180248209
2018-08-30

METHOD AND APPARATUS FOR RECOVERING PERFORMANCE OF FUEL CELL STACK

#15
20180145356
2018-05-24

Fuel cell system

#16
20170352904
2017-12-07

Fuel cell assembly and associated method of operation

#17
20170279139
2017-09-28

Method for starting a fuel cell and fuel cell system

#18
20170250417
2017-08-31

Regeneration of flow battery electrode

#19
20170047600
2017-02-16

Fuel cell system and method for its operation

#20
20160344049
2016-11-24

Method and apparatus for recovering performance of fuel cell stack

#21
20160233531
2016-08-11

Electrolyte balancing strategies for flow batteries

#22
20160126574
2016-05-05

Fuel cell system and maximum power calculation method

#23
20150325872
2015-11-12

Systems and methods for mitigating carbon corrosion in a fuel cell system

#24
20150325871
2015-11-12

Procedure for detecting the state of permeability of the ion exchange polymer membrane of a fuel cell

#25
20150311548
2015-10-29

Integrated recirculating open cathode fuel cell system

#26
20150303500
2015-10-22

System and method for controlling performance of fuel cell stack

#27
20150303497
2015-10-22

Rejuvenation of automotive fuel cells

#28
20150295257
2015-10-15

Integrated recirculating fuel cell methods

#29
20150270565
2015-09-24

System and method for recovering output of fuel cell

#30
20150180070
2015-06-25

Fuel cell system

#31
20150118598
2015-04-30

Method for recovering fuel cell performance by using electrode reversal

#32
20150104721
2015-04-16

Performance recovery method for fuel cell stack

#33
20150086890
2015-03-26

Fuel cell system

#34
20150064509
2015-03-05

Fuel cell start up method

#35
20140170510
2014-06-19

System and method for recovering performance of fuel cell

#36
20140106251
2014-04-17

Fuel cell system and vehicle fuel cell system discharging method

#37
20140072887
2014-03-13

OXIDATION OF FUEL CELL ELECTRODE CONTAMINANTS

#38
20140065507
2014-03-06

Stack for simulating cell voltage reversal behavior in fuel cell

#39
20130309590
2013-11-21

Fuel cell system

#40
20130164640
2013-06-27

Operation method of polymer electrolyte fuel cell system and polymer electrolyte fuel cell system

#41
20130130142
2013-05-23

Flowing electrolyte battery with electric potential neutralization

#42
20130052548
2013-02-28

Process for operating a high temperature fuel cell stack

#43
20130017458
2013-01-17

FUEL CELL SYSTEM AND OPERATION METHOD THEREOF

#44
20120293110
2012-11-22

ELECTRODE, FUEL CELL AND BATTERY

#45
20120237843
2012-09-20

Electrochemical reactor, such as a fuel cell or an electrolyser, provided with a device for measuring a parameter of a gas specific to the operation of said reactor

#46
20120237800
2012-09-20

Preventing corrosion in a fuel cell

#47
20120214077
2012-08-23

Integrated recirculating fuel cell system

#48
20120162842
2012-06-28

Shunt system for cells in a fuel cell stack

#49
20120156581
2012-06-21

System and method for operating a high temperature fuel cell as a back-up power supply with reduced performance decay

#50
20120148929
2012-06-14

Methods of operating fuel cell stacks and systems

#51
20120094195
2012-04-19

Fuel cell system and scavenging method therefor

#52
20120045669
2012-02-23

Flowing electrolyte battery with electric potential neutralization

#53
20110256461
2011-10-20

FUEL CELL SYSTEM, ESTIMATION DEVICE OF AMOUNT OF ANODE GAS TO BE GENERATED AND ESTIMATION METHOD OF AMOUNT OF ANODE GAS TO BE GENERATED

#54
20110256460
2011-10-20

FUEL CELL POWER GENERATION SYSTEM AND METHOD FOR OPERATING THE SAME

#55
20110250516
2011-10-13

Method of shut-down and starting of a fuel cell

#56
20110236780
2011-09-29

Fuel cell system and method for controlling stoppage of fuel cell system

#57
20110129750
2011-06-02

DIRECT METHANOL FUEL CELL AND ELECTRONIC DEVICE

#58
20110097636
2011-04-28

Disconnecting Procedure For Fuel Cell Systems

#59
20110033759
2011-02-10

METHOD FOR OPERATING A FUEL CELL

#60
20110003220
2011-01-06

METHOD AND APPARATUS FOR THE DISCONNECTION OF A FUEL CELL

#61
20100330447
2010-12-30

Fuel cell system and method

#62
20100323255
2010-12-23

FUEL CELL SYSTEM SUITABLE FOR COMPLEX FUELS AND A METHOD OF OPERATION OF THE SAME

#63
20100279182
2010-11-04

Fuel cell system and method for removal of impurities from fuel cell electrodes

#64
20100239927
2010-09-23

Avoiding coolant slump into reactant fields during PEM fuel cell shutdown

#65
20100203405
2010-08-12

Fuel cell system and method of operating the fuel cell system

#66
20100136447
2010-06-03

Fuel cell system

#67
20100136445
2010-06-03

Fuel cell system with controlled stop process for a shut-down operation

#68
20100119887
2010-05-13

Fuel cell system and activation method for fuel cell

#69
20100112401
2010-05-06

Fuel cell system, electrode catalyst degradation judgment method, and moving body

#70
20100104900
2010-04-29

FUEL CELL POWER GENERATION SYSTEM

#71
20100092816
2010-04-15

Methods of removing contaminants from a fuel cell electrode

#72
20100075182
2010-03-25

Method for electrochemical activation of fuel cells

#73
20100068577
2010-03-18

Fuel cell system and method therefor

#74
20100028729
2010-02-04

FUEL CELL POWER PLANT INCLUDING A VARIABLE RESISTIVE DEVICE

#75
20100003551
2010-01-07

Method for operating a fuel cell system in a mode of reduced power output

#76
20100003546
2010-01-07

System and method for shorting a fuel cell stack

#77
20090274937
2009-11-05

FUEL CELL SYSTEM WITH CIRCUIT MODULES

#78
20090269628
2009-10-29

Fuel cell system, estimation device of amount of anode gas to be generated and estimation method of amount of anode gas to be generated

#79
20090263696
2009-10-22

Shutdown operations for a sealed anode fuel cell system

#80
20090263683
2009-10-22

Method and device for improving the service life of a fuel cell at transitions in operation

#81
20090253000
2009-10-08

System and method for operating a high temperature fuel cell as a back-up power supply with reduced performance decay

#82
20090197129
2009-08-06

Fuel cell system having decreased deterioration during initiation

#83
20090169929
2009-07-02

Fuel cell system, method of stopping operation of the fuel cell system, and method of starting operation of the fuel cell system

#84
20090169926
2009-07-02

Method for stopping power generation of fuel cell system and fuel cell system including power generation stopping unit

#85
20090155643
2009-06-18

Method for using a fuel cell comprising a regeneration step by lowering the temperature

#86
20090130508
2009-05-21

Fuel cell system

#87
20090123785
2009-05-14

FUEL CELL SYSTEM AND CONTROL METHOD THEREFOR

#88
20090110993
2009-04-30

Segmented solid oxide fuel cell stack and methods for operation and use thereof

#89
20090110988
2009-04-30

Fuel cell system and scavenging method therefor

#90
20090110969
2009-04-30

Method of operating a solid polymer electrolyte fuel cell and aging apparatus

#91
20090092868
2009-04-09

Fuel cell system and control method thereof

#92
20090035630
2009-02-05

Fuel cell system and shutdown method of the same

#93
20080241619
2008-10-02

FUEL CELL APPARATUS

#94
20080226952
2008-09-18

PROCESSES FOR ACTIVATING MEMBRANE ELECTRODE ASSEMBLIES

#95
20080220294
2008-09-11

Individual cell shorting during startup and shutdown using an integrated switch

#96
20080206610
2008-08-28

Method of Operating an Electrochemical Device Including Mass Flow and Electrical Parameter Controls

#97
20080182139
2008-07-31

Algorithm for online adaptive polarization curve estimation of a fuel cell stack

#98
20080038602
2008-02-14

Method for mitigating cell degradation due to startup and shutdown via cathode re-circulation combined with electrical shorting of stack

#99
20080026268
2008-01-31

Fuel Cell System and Method

#100
20080026262
2008-01-31

Method of improving fuel cell performance by removing at least one metal oxide contaminant from a fuel cell electrode

#101
20070275275
2007-11-29

FUEL CELL ANODE PURGE SYSTEMS AND METHODS

#102
20070207356
2007-09-06

Fuel cell system with warming-up and method of operating the same

#103
20070184314
2007-08-09

Fuel cell system

#104
20070154743
2007-07-05

Micro-energy re-activating method to recover PEM fuel cell performance

#105
20070099062
2007-05-03

Fuel cell system suitable for complex fuels and a method of operation of the same

#106
20070042243
2007-02-22

Apparatus and method for controlling a fuel cell using the rate of voltage recovery

#107
20070042242
2007-02-22

Fuel electrode of solid polymer electrolyte fuel cell

#108
20060251957
2006-11-09

Flowing electrolyte battery with electric potential neutralization

#109
20060249399
2006-11-09

Cleaning (de-poisining) PEMFC electrodes from strongly adsorbed species on the catalyst surface

#110
20060166051
2006-07-27

Method and device to improve operation of a fuel cell

#111
20060115700
2006-06-01

Fuel cell system and method of detecting failure in a fuel gas channel of fuel cell system

#112
20060093879
2006-05-04

Procedure for starting up a fuel cell system having an anode exhaust recycle loop

#113
20060057447
2006-03-16

Fuel cell system

#114
20060035118
2006-02-16

Method for detecting a gas leak in a pem fuel cell

#115
20060014060
2006-01-19

Fuel cell characteristic recovery method and apparatus

#116
20050287404
2005-12-29

Fuel cell system and method for removal of impurities from fuel cell electrodes

#117
20050249985
2005-11-10

Hybrid power source

#118
20050136298
2005-06-23

Methods of treating fuel cells and fuel cell systems

#119
20050136293
2005-06-23

Cell maintenance device for fuel cell stacks

#120
20050123809
2005-06-09

Methods of removing contaminants from a fuel cell electrode

#121
20050074649
2005-04-07

Fuel cell voltage control