ClassID:

213447

H01M8/04179 - CPC Classification

Classification description:

Fuel cells; Manufacture thereof; Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids; Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal by purging or increasing flow or pressure of reactants

Recent Application in this class:
#1
20260112665
2026-04-23

FUEL CELL SYSTEM

#2
20260074248
2026-03-12

FUEL CELL SYSTEM CONTROL USING CELL VOLTAGE MONITORING

#3
20260074247
2026-03-12

FUEL CELL ADAPTIVE PURGE DRAIN VALVE CONTROL

#4
20260066327
2026-03-05

FUEL CELL MODULE

#5
20250391892
2025-12-25

FUEL CELL SYSTEM, RECIRCULATION ASSEMBLY FOR A FUEL CELL SYSTEM, AND METHOD FOR COOLING A DRIVE DEVICE OF A RECIRCULATION FAN IN A FUEL CELL SYSTEM

#6
20250372673
2025-12-04

FUEL CELL POWER GENERATION SYSTEM AND CONTROL METHOD THEREOF

#7
20250329763
2025-10-23

Fuel Cell Exhaust Separation System and Control Method

#8
20250329761
2025-10-23

INTERMITTENT EXHAUST GAS RECIRCULATION DURING OPERATION OF A FUEL CELL SYSTEM

#9
20250304036
2025-10-02

CONTROL APPARATUS FOR FUEL CELL ELECTRIC VEHICLE

#10
20250300199
2025-09-25

FUEL CELL HYDROGEN GAS CIRCUIT DEVICE AND CONTROL METHOD THEREOF

#11
20250296481
2025-09-25

WADING CONTROL METHOD OF FUEL CELL VEHICLE AND WADING SYSTEM OF FUEL CELL VEHICLE

#12
20250215993
2025-07-03

FLUID CONTROL DEVICE

#13
20250132362
2025-04-24

METHOD FOR DRYING A FUEL CELL, AND FUEL CELL SYSTEM

#14
20250105319
2025-03-27

METHOD FOR OPERATING A FUEL CELL SYSTEM, AND CONTROL DEVICE

#15
20250096287
2025-03-20

FUEL CELL SYSTEM AND WATER DRAINING METHOD OF FUEL CELL SYSTEM

#16
20250087725
2025-03-13

METHOD FOR OPERATING A FUEL CELL SYSTEM, AND A CONTROL UNIT

#17
20250070194
2025-02-27

METHOD FOR OPERATING A FUEL CELL DEVICE, AND FUEL CELL DEVICE

#18
20240356051
2024-10-24

MEDIA COMBINING DEVICE AND METHOD FOR DETECTING THE FUEL CONTENT IN MULTIPLE FUEL-CELL SYSTEMS

#19
20240322301
2024-09-26

MOISTURE AND CARBON DIOXIDE MANAGEMENT SYSTEM IN ELECTROCHEMICAL CELLS

#20
20240322206
2024-09-26

FUEL CELL SYSTEM

#21
20240291005
2024-08-29

FUEL CELL SYSTEM AND METHOD FOR PROVIDING ELECTRICAL ENERGY

#22
20240282985
2024-08-22

PRESSURE SENSOR CONTAINING ICE MITIGATING FEATURE AND ELECTROCHEMICAL SYSTEM USING THE SAME

#23
20240258536
2024-08-01

FUEL CELL SYSTEM

#24
20240142054
2024-05-02

GAS MANAGEMENT APPARATUS, AND METHOD FOR CONDITIONING ANODE GAS OF A FUEL CELL

#25
20240128482
2024-04-18

SYSTEMS AND METHODS FOR OPTIMIZING AN EJECTOR DESIGN TO INCREASE OPERATING RANGE

#26
20240120515
2024-04-11

FUEL CELL SYSTEM

#27
20240088411
2024-03-14

CONDENSATE WATER DRAIN CONTROL SYSTEM AND METHOD FOR FUEL CELLS

#28
20240072277
2024-02-29

FUEL CELL SYSTEM

#29
20240072275
2024-02-29

FUEL CELL SYSTEM

#30
20240047786
2024-02-08

Moisture and carbon dioxide management system in electrochemical cells

#31
20240014420
2024-01-11

FUEL CELL FLUID DISCHARGE SYSTEM, A FUEL CELL SYSTEM, AND A METHOD FOR DISCHARGING BYPRODUCTS PRODUCED DURING FUEL CELL OPERATION

#32
20230411654
2023-12-21

FUEL CELL PURGE SYSTEM BASED ON TILT LOCATION

#33
20230327149
2023-10-12

Fuel cell with protection from pressure imbalance

#34
20230282865
2023-09-07

Fuel Cell Heat Treatment Method and Apparatus

#35
20230268525
2023-08-24

PREDICTIVE FREEZE PREPARATION SCHEDULING FOR FUEL CELL PROPULSION SYSTEM

#36
20230261216
2023-08-17

FUEL CELL SYSTEM

#37
20230197994
2023-06-22

Reforming catalyst pattern for fuel cell operated with enhanced COutilization

#38
20230170502
2023-06-01

PURGE SYSTEMS AND METHODS IN A FUEL CELL SYSTEM

#39
20230074636
2023-03-09

APPARATUS AND METHOD FOR ESTIMATING AN AMOUNT OF CONDENSED WATER IN AN ANODE OF A FUEL CELL SYSTEM AND METHOD OF CONTROLLING A DRAIN VALVE USING SAME

#40
20230043105
2023-02-09

Fuel cell system and exhaust gas treatment device

#41
20230024605
2023-01-26

Air control valve for fuel cell

#42
20220384825
2022-12-01

METHOD FOR ACTUATING A METERING VALVE

#43
20220336830
2022-10-20

Water removing system and method of fuel cell vehicle using impedance

#44
20220328852
2022-10-13

Fuel cell system and condensate water storage device

#45
20220320537
2022-10-06

Fuel cell system and method for removing water from the fuel cell system

#46
20220311029
2022-09-29

Method of operating water electrolysis and electricity generating system

#47
20220302476
2022-09-22

Fuel cell system and method of controlling the system

#48
20220293976
2022-09-15

Water discharge optimization for fuel cell vehicles

#49
20220285707
2022-09-08

Control systems and methods to meet fuel cell fuel demand

#50
20220285704
2022-09-08

CO2-NEUTRAL OR NEGATIVE TRANSPORTATION ENERGY STORAGE SYSTEMS

#51
20220231312
2022-07-21

System for estimating amount of purge of fuel cell, and system and method for estimating hydrogen concentration of fuel cell using the same

#52
20220190363
2022-06-16

Fuel cell system and method of controlling same

#53
20220166039
2022-05-26

System and method for fuel supply control for a fuel cell

#54
20220102743
2022-03-31

Electrochemical cell system

#55
20220059854
2022-02-24

Flushing system and method for monitoring same

#56
20220029181
2022-01-27

Fuel cell vehicle with a water system

#57
20210376346
2021-12-02

Fuel cell system

#58
20210376344
2021-12-02

Fuel cell system and control method of the same

#59
20210367260
2021-11-25

Fuel cell stack, fuel cell system, and method for controlling fuel cell stack

#60
20210367250
2021-11-25

Fuel cell system

#61
20210367248
2021-11-25

Fuel-cell hydrogen recycling means

#62
20210367247
2021-11-25

CONDENSATE WATER DRAIN CONTROL SYSTEM AND METHOD FOR FUEL CELLS

#63
20210344027
2021-11-04

Method for controlling humidity in a fuel cell

#64
20210344023
2021-11-04

Method for controlling a fuel cell

#65
20210305599
2021-09-30

Method of operating fuel cell system

#66
20210249715
2021-08-12

Moisture and carbon dioxide management system in electrochemical cells

#67
20210249671
2021-08-12

Fuel cell power system for an unmanned surface vehicle

#68
20210234180
2021-07-29

Multiple injection fuel cell and operating method thereof

#69
20210202967
2021-07-01

Fuel cell system and control method of fuel cell system

#70
20210202965
2021-07-01

FUEL CELL SYSTEM AND METHOD FOR PURGING AND REMOVING WATER DURING START AND STOP PROCESS THEREOF

#71
20210194022
2021-06-24

Fuel cell system and purge method therefor

#72
20210175524
2021-06-10

Fuel cell with protection from pressure imbalance

#73
20210143454
2021-05-13

Fuel cell system and method of operating the fuel cell system at low temperature

#74
20210057771
2021-02-25

REDOX FLOW BATTERY

#75
20210028474
2021-01-28

Apparatus and method for controlling emergency driving for fuel cell vehicle

#76
20210028471
2021-01-28

METHOD FOR REGULATING THE HUMIDITY OF A MEMBRANE OF A FUEL CELL

#77
20210020971
2021-01-21

Closed anode fuel cell startup method

#78
20210020969
2021-01-21

System for estimating amount of purge of fuel cell, and system and method for estimating hydrogen concentration of fuel cell using the same

#79
20210013529
2021-01-14

Fuel cell system and method for controlling fuel cell system

#80
20200384892
2020-12-10

Fuel cell vehicle and liquid state estimation method

#81
20200358115
2020-11-12

Valve

#82
20200358114
2020-11-12

Water removing system and method of fuel cell vehicle using impedance

#83
20200331353
2020-10-22

Fuel cell vehicle and control method of fuel cell vehicle

#84
20200328447
2020-10-15

Method for producing high-purity electrolyte for vanadium redox flow battery using catalytic reactor

#85
20200317061
2020-10-08

Fuel cell vehicle

#86
20200303751
2020-09-24

Water discharge control system and method for fuel cell

#87
20200259194
2020-08-13

METHOD FOR REMOVING PRODUCT WATER FROM A FUEL CELL

#88
20200251760
2020-08-06

Hydrogen supply system low pressure state estimator

#89
20200243886
2020-07-30

Fuel cell system and method of controlling fuel cell system

#90
20200185739
2020-06-11

Fuel cell system

#91
20200185737
2020-06-11

Purge circuit of a fuel cell

#92
20200176800
2020-06-04

Reforming catalyst pattern for fuel cell operated with enhanced COutilization

#93
20200176796
2020-06-04

Methods and systems for controlling water imbalance in an electrochemical cell

#94
20200176789
2020-06-04

Operation of molten carbonate fuel cells with enhanced COutilization

#95
20200153010
2020-05-14

Fuel cell system and method for controlling the same

#96
20200153006
2020-05-14

Fuel cell purge systems and related processes

#97
20200144640
2020-05-07

FUEL CELL SYSTEM

#98
20200127307
2020-04-23

Fuel cell system

#99
20200075974
2020-03-05

Closed anode fuel cell startup method

#100
20200006792
2020-01-02

Fuel cell system and method for inferring wet state of fuel cell

#101
20190356005
2019-11-21

Fuel cell system and method for controlling the same

#102
20190356004
2019-11-21

Fuel cell system

#103
20190312289
2019-10-10

System comprising a fuel-cell stack, and associated control method

#104
20190260045
2019-08-22

Fuel cell system and method of controlling the same

#105
20190245253
2019-08-08

Moisture and carbon dioxide management system in electrochemical cells

#106
20190237784
2019-08-01

Anode bleed control in a fuel cell stack

#107
20190162790
2019-05-30

Fuel cell stack cell voltage sensor diagnostic

#108
20190074526
2019-03-07

Fuel cell system and control device therefor, and control method for fuel cell system

#109
20190006686
2019-01-03

Fuel cell power system for an unmanned surface vehicle

#110
20180351184
2018-12-06

FUEL CELL, CONTROL METHOD FOR FUEL CELL, AND COMPUTER READABLE RECORDING MEDIUM

#111
20180323451
2018-11-08

Concave fuel cell knock out drain

#112
20180301721
2018-10-18

Fuel cell system

#113
20180294497
2018-10-11

Fuel cell system and method thereof

#114
20180294493
2018-10-11

Fuel cell system and method of controlling the same

#115
20180277867
2018-09-27

TIME-CONTROLLED CARTRIDGE HEATER FOR FUEL CELL KNOCK OUT DRAIN

#116
20180277863
2018-09-27

Fuel cell system and remaining water purging control method

#117
20180241052
2018-08-23

Valve unit

#118
20180205100
2018-07-19

Fuel cell system

#119
20180175415
2018-06-21

Closed anode fuel cell startup method

#120
20180175413
2018-06-21

CELL FRAME FOR FUEL CELL

#121
20180166720
2018-06-14

Fuel cell system and secondary battery diagnosis method

#122
20180151897
2018-05-31

Fuel cell system with valve control for discharging anode off gas, and method of operating the same

#123
20180138529
2018-05-17

Fuel cell purge systems and related processes

#124
20180048003
2018-02-15

Fuel cell system and control method for fuel cell system

#125
20180034078
2018-02-01

Method of controlling fuel cell system by comparing pressures in fuel gas path

#126
20180026281
2018-01-25

KNOCK-OUT VALVE WITH AN EXTENSION TUBE FOR FUEL CELL PURGING

#127
20180026280
2018-01-25

Fuel cell system with cathode purging

#128
20180026279
2018-01-25

TOROIDAL SCAVENGED RESERVOIR FOR FUEL CELL PURGE LINE SYSTEM

#129
20180006319
2018-01-04

Fuel cell system and control method thereof

#130
20180006318
2018-01-04

Fuel cell system

#131
20170373334
2017-12-28

Fuel cell system

#132
20170346115
2017-11-30

Fuel cell and method for operating the same

#133
20170346113
2017-11-30

Control valve, fuel cell exhaust assembly and fuel cell

#134
20170346103
2017-11-30

Fuel cell with purge manifold

#135
20170331129
2017-11-16

Fuel cell system

#136
20170324102
2017-11-09

FUEL CELL SYSTEM

#137
20170324101
2017-11-09

PROACTIVE ANODE FLOODING REMEDIATION

#138
20170317364
2017-11-02

Fuel cell system and method for switching off a fuel cell stack

#139
20170250416
2017-08-31

FUEL CELL CONTROL METHOD AND FUEL CELL SYSTEM

#140
20170187052
2017-06-29

Hydrogen purging device and method for fuel cell system

#141
20170133694
2017-05-11

Single-interface connector assembly for hearing device fuel cell power pack

#142
20170117562
2017-04-27

Fuel cell device with a flushing gas path

#143
20170012306
2017-01-12

Purge circuit of a fuel cell

#144
20160380291
2016-12-29

Process for supplying a fuel cell having alternate supply and purge phases

#145
20160380283
2016-12-29

Fuel cell system

#146
20160380282
2016-12-29

Fuel cell system

#147
20160377342
2016-12-29

System and method for high pressure, passive condensing of water from hydrogen in a reversible solid oxide fuel cell system

#148
20160322832
2016-11-03

Multimode charging device and method

#149
20160322657
2016-11-03

FUEL CELL SYSTEM AND CONTROL METHOD

#150
20160308227
2016-10-20

Multiple injection fuel cell

#151
20160276683
2016-09-22

Method for preparing to start a fuel cell system

#152
20160276682
2016-09-22

Fuel cell humidification device and fuel cell motorcycle

#153
20160268614
2016-09-15

Fuel cell purge line system

#154
20160240875
2016-08-18

Anode bleed control in a fuel cell stack

#155
20160221433
2016-08-04

Piping member for fuel cell and fuel cell vehicle equipped therewith

#156
20160197362
2016-07-07

Exhaust gas system and motor vehicle having an exhaust gas system

#157
20160156046
2016-06-02

Fuel cell system and control method of fuel cell system

#158
20160149242
2016-05-26

Fuel cell system and method of controlling fuel cell system

#159
20160141905
2016-05-19

Power supply system and voltage control method for fuel cell

#160
20160141686
2016-05-19

Fuel cell system

#161
20160141682
2016-05-19

Power supply system and voltage control method of fuel cell

#162
20160141671
2016-05-19

Water drainage device for fuel cell, fuel cell system, moving body and control method of fuel cell system

#163
20160141670
2016-05-19

Fuel cell system and control method of the same

#164
20160141660
2016-05-19

Fuel cell system and control method therefor

#165
20160141659
2016-05-19

Fuel cell system

#166
20160141656
2016-05-19

Fuel cell system and control method therefor

#167
20160141655
2016-05-19

Method of discharging water from fuel cell and fuel cell system

#168
20160133963
2016-05-12

Residual water scavenging processing method in fuel cell system and fuel cell system

#169
20160111736
2016-04-21

Fuel cell system programmed for improved air compressor control

#170
20160099478
2016-04-07

Methods relating to monitoring fuel cells

#171
20160087293
2016-03-24

Ventilation apparatus and control method thereof

#172
20160043411
2016-02-11

Fuel cell having perforated flow field

#173
20150311547
2015-10-29

Fuel cell cathode balance of plant freeze strategy

#174
20150214561
2015-07-30

Fuel cell system and control method thereof

#175
20150125773
2015-05-07

Electronic apparatus, control method and program thereof, and battery for operating electronic apparatus

#176
20150099202
2015-04-09

Power generation system

#177
20150099200
2015-04-09

Freeze preparation for a fuel cell system

#178
20150056531
2015-02-26

Fuel cell system

#179
20150056527
2015-02-26

HYDROGEN PURGING DEVICE AND METHOD FOR FUEL CELL SYSTEM

#180
20150030946
2015-01-29

Apparatus and method for fuel cell start from freezing without melting ice

#181
20150010838
2015-01-08

Fuel cell system and method of operating the same

#182
20140335430
2014-11-13

Fuel cell system and operating method therefor

#183
20140287334
2014-09-25

Fuel cell system and the operating method thereof

#184
20140170518
2014-06-19

Pulsating operation method and system for fuel cell system

#185
20140134508
2014-05-15

Fuel cell system and method for controlling fuel cell system

#186
20140093803
2014-04-03

Fuel cell system

#187
20140011105
2014-01-09

Reverse flow relief valve for a fuel cell system

#188
20130295482
2013-11-07

HYDROGEN SUPPLY SYSTEM FOR FUEL CELL WITH INTEGRATED MANIFOLD BLOCK

#189
20130189595
2013-07-25

Fuel cell system capable of performing gas purge to adjust amount of water therein

#190
20130157087
2013-06-20

Flow battery system with standby mode

#191
20130130135
2013-05-23

Fuel cell system and humidification device of the same

#192
20130122386
2013-05-16

Method to generate H2-exhaust sensor test pulse using electrically controlled pressure regulator

#193
20130089797
2013-04-11

Anode purge and drain valve strategy for fuel cell system

#194
20130071767
2013-03-21

Fuel cell system

#195
20130065150
2013-03-14

Fuel cell system

#196
20130034787
2013-02-07

Fuel cell system

#197
20120325677
2012-12-27

ELECTROCHEMISTRY METHOD HAVING IMPROVED EFFICIENCY AND ASSOCIATED ELECTROCHEMICAL REACTOR SUCH AS A HIGH TEMPERATURE ELECTROLYSER (EHT)

#198
20120288778
2012-11-15

Method of controlling fuel cell system

#199
20120282536
2012-11-08

Device and method for controlling fuel cell system having oxygen concentration transient reduction

#200
20120237844
2012-09-20

Method for Operating a Fuel Cell System

#201
20120171590
2012-07-05

CONTROL DEVICE AND CONTROL METHOD FOR FUEL CELL SYSTEM

#202
20120141898
2012-06-07

Fuel cell system

#203
20120123620
2012-05-17

PURGING DEVICE AND METHOD FOR IMPROVING COLD-STARTABILITY OF FUEL CELL

#204
20120003551
2012-01-05

Fuel cell with purge manifold

#205
20110313606
2011-12-22

Moving body with fuel cells mounted thereon

#206
20110313605
2011-12-22

Moving body with fuel cells mounted thereon

#207
20110281186
2011-11-17

APPARATUS AND METHOD FOR FUEL CELL START FROM FREEZING WITHOUT MELTING ICE

#208
20110274998
2011-11-10

Fuel cell system and method for controlling same

#209
20110262821
2011-10-27

Delivery head for a fuel cell

#210
20110244350
2011-10-06

Fuel cell system

#211
20110229784
2011-09-22

Flow regulator for fuel cell

#212
20110200903
2011-08-18

Fuel cell stack with improved resistance to flooding

#213
20110183228
2011-07-28

Bipolar plates and electrochemical cells employing the same

#214
20110183223
2011-07-28

Fuel cell system and method of controlling fuel cell system

#215
20110183220
2011-07-28

METHOD OF PURGING FOR FUEL CELL

#216
20110165484
2011-07-07

Fuel cell system with mechanical check valve

#217
20110129747
2011-06-02

Fuel cell device having a liquid soak up region

#218
20110104580
2011-05-05

Fuel cell system

#219
20110048837
2011-03-03

Hydrogen exhaust system for fuel cell vehicle

#220
20110045366
2011-02-24

Fuel cell system

#221
20110045365
2011-02-24

Method for removing residual water from fuel cell

#222
20110033763
2011-02-10

Fuel cell system and reverse flow relief valve

#223
20110008695
2011-01-13

FUEL CELL SYSTEM AND METHOD OF CONTROLLING A FUEL CELL SYSTEM

#224
20100330448
2010-12-30

Fuel cell power plant having improved operating efficiencies

#225
20100297518
2010-11-25

Fuel cell system including an air pressure-driven ejector

#226
20100266911
2010-10-21

Fuel cell system with scavenging means and control unit thereof

#227
20100261093
2010-10-14

Fuel cell system with anode off-gas dilution device

#228
20100261087
2010-10-14

Fuel cell having perforated flow field

#229
20100248043
2010-09-30

Hydrogen Fuel Cell Water Knock Out Device and Method of Use

#230
20100227242
2010-09-09

Fuel cell system, and operation method for fuel cell

#231
20100227238
2010-09-09

Fuel cell system and water discharge control method for the system

#232
20100212979
2010-08-26

Fuel cell-equipped vehicle and control method for fuel cell-equipped vehicle

#233
20100209791
2010-08-19

FUEL CELL SYSTEM

#234
20100190078
2010-07-29

Shutdown strategy for enhanced water management

#235
20100190071
2010-07-29

Fuel cell system and operating method therefor

#236
20100167174
2010-07-01

FUEL CELL SYSTEM

#237
20100167144
2010-07-01

Fuel cell system and operation method thereof

#238
20100167141
2010-07-01

Apparatus and method for acceleratively activating fuel cell

#239
20100136448
2010-06-03

System and method for optimizing fuel cell purge cycles

#240
20100112410
2010-05-06

Freeze tolerant introduction of hydrogen to cathode exhaust in a fuel cell system

#241
20100068570
2010-03-18

FUEL CELL SYSTEM

#242
20100028738
2010-02-04

Fuel cell system

#243
20100015484
2010-01-21

Fuel cell system

#244
20090325031
2009-12-31

FUEL CELL SYSTEM

#245
20090286116
2009-11-19

FUEL CELL SYSTEM AND CONTROL METHOD THEREOF

#246
20090263695
2009-10-22

APPARATUS FOR GENERATING HYDROGEN AND FUEL CELL POWER GENERATION SYSTEM HAVING THE SAME

#247
20090258257
2009-10-15

Fuel cell system having wet-state determination

#248
20090226783
2009-09-10

Fuel cell system

#249
20090208789
2009-08-20

System and method for purging water from a fuel cell stack

#250
20090197141
2009-08-06

Exhaust fuel diluting mechanism and fuel cell system with the exhaust fuel diluting mechanism

#251
20090191437
2009-07-30

Fuel cell system

#252
20090155636
2009-06-18

Water management for a fuel cell

#253
20090117432
2009-05-07

Water removal features for PEMfc stack manifolds

#254
20090104478
2009-04-23

Method for controlling the pressure in an anode of a fuel cell, and a fuel cell

#255
20090087696
2009-04-02

Hydrogen fuel feeding system and fuel cell system

#256
20090047551
2009-02-19

METHODS OF OPERATING FUEL CELL SYSTEMS HAVING A HUMIDIFICATION DEVICE

#257
20090035614
2009-02-05

Fuel cell system and method for operating the same

#258
20090023022
2009-01-22

Electronic apparatus, control method and program thereof, and battery for operating electronic apparatus

#259
20090011302
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