ClassID:

213534

H01M8/04828 - CPC Classification

Classification description:

Fuel cells; Manufacture thereof; Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids; Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled Humidity; Water content

Sub-classes:
Recent Application in this class:
#1
20260135129
2026-05-14

FUEL CELL SYSTEM AND OPERATING METHOD FOR A FUEL CELL SYSTEM

#2
20260121090
2026-04-30

VEHICLE FUEL CELL WAKEUP TO CONDITION OPERATIONAL STRATEGY

#3
20260031376
2026-01-29

METHOD AND ASSOCIATED APPARATUS FOR CONTROLLING THE POWER OF A FUEL CELL STACK

#4
20260005270
2026-01-01

Fuel Cell Vehicle

#5
20250343252
2025-11-06

CONDENSATE WATER DRAIN CONTROL SYSTEM AND CONTROL METHOD FOR FUEL CELL

#6
20250192211
2025-06-12

FUEL CELL SYSTEM AND FUEL CELL SYSTEM CONTROL METHOD

#7
20250192207
2025-06-12

FUEL CELL POWER SYSTEM

#8
20250121739
2025-04-17

PROACTIVE ENERGY AND THERMAL MANAGEMENT FOR FUEL CELL VEHICLE

#9
20250105320
2025-03-27

DYNAMIC FUEL CELL STACK SWITCHING

#10
20250070194
2025-02-27

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

#11
20250038232
2025-01-30

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

#12
20250030029
2025-01-23

APPARATUS FOR CONTROLLING AMMONIA FUEL CELL VEHICLE AND METHOD FOR CONTROLLING THE SAME

#13
20240413361
2024-12-12

MOISTURE-GENERATING DEVICE FOR A FUEL CELL, AND METHOD FOR OPERATING A MOISTURE-GENERATING DEVICE

#14
20240313242
2024-09-19

FUEL CELL SYSTEM CAPABLE OF ADJUSTING BYPASS FLOW RATE

#15
20240266561
2024-08-08

Cooling method for operating a fuel-cell system

#16
20240186550
2024-06-06

FUEL CELL CONTROL PROGRAM AND FUEL CELL SYSTEM

#17
20240170699
2024-05-23

Antioxidant Liquid for Fuel Cell and Method of Charging Same

#18
20240105976
2024-03-28

FUEL CELL SYSTEM

#19
20240079617
2024-03-07

SYSTEMS AND METHODS FOR CONTROLLING AIR FLOW AT A FUEL CELL

#20
20240072277
2024-02-29

FUEL CELL SYSTEM

#21
20230402628
2023-12-14

Residual Water Drain System and Method of Fuel Cell Vehicle

#22
20230378496
2023-11-23

SYSTEM AND METHOD OF DRAINING RESIDUAL WATER OF A FUEL CELL FOR A VEHICLE

#23
20230317981
2023-10-05

Fuel Cell Cooling

#24
20230268531
2023-08-24

HIGH-TEMPERATURE ANION-EXCHANGE MEMBRANE FUEL CELL

#25
20230081424
2023-03-16

SYSTEM FOR DISCHARGING RESIDUAL WATER IN FUEL CELL STACK AND METHOD OF CONTROLLING DISCHARGE OF RESIDUAL WATER

#26
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

#27
20230056450
2023-02-23

FUEL CELL REGENERATION

#28
20230051038
2023-02-16

RECIRCULATION SYSTEM AND SUPPLY SYSTEM COMPRISING SAID SYSTEM

#29
20230024443
2023-01-26

EVAPORATION WATER TANK FOR A FUEL CELL DEVICE AND THE USE THEREOF IN A FUEL CELL DEVICE

#30
20230012347
2023-01-12

FUEL CELL SYSTEM

#31
20220416270
2022-12-29

Fuel cell system with a vibration generator, and method for operating a fuel cell system with a vibration generator

#32
20220384824
2022-12-01

Fuel cell system

#33
20220320540
2022-10-06

FUEL CELL SYSTEM AND CONDENSATE WATER STORAGE DEVICE

#34
20220244319
2022-08-04

Method and apparatus for simultaneous detection of a plurality of parameters of a plurality of membrane electrode assemblies of fuel cell stack

#35
20220166036
2022-05-26

Fuel cell vehicle and method of operating the same

#36
20220140369
2022-05-05

Fuel Cell System

#37
20220029181
2022-01-27

Fuel cell vehicle with a water system

#38
20210376365
2021-12-02

Direct isopropanol fuel cell

#39
20210344027
2021-11-04

Method for controlling humidity in a fuel cell

#40
20210273245
2021-09-02

Humidifier and motor vehicle with a fuel cell device having a humidifier

#41
20210234179
2021-07-29

Fuel cell based power generator

#42
20210226238
2021-07-22

Fuel cell system

#43
20210202967
2021-07-01

Fuel cell system and control method of fuel cell system

#44
20210066738
2021-03-04

Method for operating a fuel cell device

#45
20210050610
2021-02-18

Molten carbonate fuel cell anode exhaust post-processing for carbon dioxide capture

#46
20200313210
2020-10-01

Shutdown control method and shutdown control system of fuel cell

#47
20200295389
2020-09-17

Fuel cell based power generator

#48
20200280082
2020-09-03

Fuel cell system and control method

#49
20200280081
2020-09-03

Apparatus and system for discharging water of fuel cell

#50
20200136158
2020-04-30

CONDENSATE WATER DRAIN CONTROL SYSTEM AND CONTROL METHOD FOR FUEL CELL

#51
20200119375
2020-04-16

Method and system for removing residual water in fuel cell stack

#52
20200036016
2020-01-30

Humidifier

#53
20190393526
2019-12-26

CLOSED LOOP CONTROL FOR FUEL CELL WATER MANAGEMENT

#54
20190372142
2019-12-05

Controller for estimating relative humidity and condensed water, and method for controlling condensed water drain using the same

#55
20190372141
2019-12-05

Controller for estimating relative humidity and condensed water, and method for controlling condensed water drain using the same

#56
20190363384
2019-11-28

Controller for estimating relative humidity and condensed water, and method for controlling condensed water drain using the same

#57
20190356004
2019-11-21

Fuel cell system

#58
20190351784
2019-11-21

Vehicle power plant to conserve water

#59
20190305342
2019-10-03

Preventing the formation of black ice as a result of exhaust water from motor vehicles

#60
20190245227
2019-08-08

Method of diagnosing level sensor failure in fuel cell water trap and control unit using the same

#61
20190173107
2019-06-06

Fuel cell system and control method for fuel cell system

#62
20190157695
2019-05-23

Fuel cell system and method of controlling fuel cell system

#63
20190157693
2019-05-23

Diagnostic system, fuel cell system having a diagnostic system, and method for determining cathode gas contamination

#64
20190148755
2019-05-16

Direct isopropanol fuel cell

#65
20190140298
2019-05-09

High efficiency fuel cell system with hydrogen and syngas export

#66
20190140297
2019-05-09

CARBON DIOXIDE SEPARATOR, FUEL CELL SYSTEM INCLUDING SAME, AND METHOD OF OPERATING THE FUEL CELL SYSTEM

#67
20190140295
2019-05-09

Molten carbonate fuel cell anode exhaust post-processing for carbon dioxide

#68
20190131638
2019-05-02

Method for diagnosing water-containing state of fuel cell stack

#69
20190103615
2019-04-04

Fuel cell system

#70
20190081340
2019-03-14

Wet state control method for fuel cell system and wet state control device for the same

#71
20190081339
2019-03-14

Fuel cell system and control method thereof

#72
20190036145
2019-01-31

FUEL CELL

#73
20190020086
2019-01-17

Anaerobic aluminum-water electrochemical cell

#74
20190020085
2019-01-17

Anaerobic aluminum-water electrochemical cell

#75
20190020084
2019-01-17

Anaerobic aluminum-water electrochemical cell

#76
20190020083
2019-01-17

Anaerobic aluminum-water electrochemical cell

#77
20190006687
2019-01-03

METHOD OF AND APPARATUS FOR ACTIVATING FUEL CELL

#78
20180358635
2018-12-13

Gas supply, conditioning, and discharge systems and methods

#79
20180351184
2018-12-06

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

#80
20180316028
2018-11-01

Fuel cell system and humidifier therefor

#81
20180301724
2018-10-18

Fuel cell system and control method therefor

#82
20180294491
2018-10-11

Fuel cell vehicle

#83
20180287235
2018-10-04

Anaerobic aluminum-water electrochemical cell

#84
20180210019
2018-07-26

Multichannel fuel cell test station

#85
20180183081
2018-06-28

Fuel cell system and method of controlling the same

#86
20180034071
2018-02-01

Fuel cell having oxygen selective membrane

#87
20180026280
2018-01-25

Fuel cell system with cathode purging

#88
20170365868
2017-12-21

Fuel cell system and method of controlling the same

#89
20170346106
2017-11-30

Device intended to generate electricity from a planar fuel cell cooled by air flow

#90
20170338499
2017-11-23

Method of running-in operation of fuel cell

#91
20170324105
2017-11-09

METHOD FOR CONTROLLING A FUEL CELL

#92
20170301935
2017-10-19

APPARATUS AND METHOD FOR CONTROLLING FUEL CELL STACK

#93
20170297451
2017-10-19

Method and system for controlling air flow supplied to vehicle fuel cell

#94
20170244337
2017-08-24

POWER SUPPLY SYSTEM, APPARATUS, AND CONTROL METHOD

#95
20170244336
2017-08-24

Power supply system, apparatus, and control method combining a first control signal and a second control signal

#96
20170244122
2017-08-24

Low-temperature startup method for fuel cell system

#97
20170179512
2017-06-22

Method for the predictive operation of a fuel cell or a high-voltage accumulator

#98
20170162889
2017-06-08

Fuel cell and control method for the same

#99
20170155159
2017-06-01

Fuel cell device having a water-transferring anode gas path, and method for operating a fuel cell

#100
20170149077
2017-05-25

Fuel cell system and control method for fuel cell system

#101
20170110750
2017-04-20

Direct isopropanol fuel cell

#102
20170092972
2017-03-30

Relative humidity estimators for fuel cell stack ports

#103
20170077534
2017-03-16

Fuel cell regulation using loss recovery systems

#104
20170033379
2017-02-02

Metal-air battery, vehicle system comprising the metal-air battery, and method of operating the metal-air battery

#105
20160380294
2016-12-29

Fuel cell system and emergency stop method

#106
20160380283
2016-12-29

Fuel cell system

#107
20160359181
2016-12-08

Apparatus and method for controlling air supply into fuel cell stack

#108
20160301091
2016-10-13

Controller for estimating relative humidity and condensed water, and method for controlling condensed water drain using the same

#109
20160293983
2016-10-06

Operation control method and system of fuel cell

#110
20160248111
2016-08-25

Carbon dioxide separator, fuel cell system including same, and method of operating the fuel cell system

#111
20160190613
2016-06-30

Fuel cell system and method of controlling operation of fuel cell

#112
20160181637
2016-06-23

Fuel cell system

#113
20160164126
2016-06-09

Device and method for monitoring dryness of fuel cell stack

#114
20160149243
2016-05-26

Energy saving method in combined system of bioethanol producing device and solid oxide fuel cell

#115
20160149237
2016-05-26

Apparatus and method for preventing moisture condensation

#116
20160141688
2016-05-19

Fuel cell system and dryness degree acquisition method

#117
20160141656
2016-05-19

Fuel cell system and control method therefor

#118
20160072138
2016-03-10

FUEL CELL SYSTEM

#119
20160064759
2016-03-03

Hybrid fuel cell

#120
20160036076
2016-02-04

Method of operating fuel cell system with performance recovery control

#121
20150380755
2015-12-31

FUEL CELL SYSTEM AND FUEL CELL VEHICLE

#122
20150349358
2015-12-03

Fuel cell system and control method for the same

#123
20150325865
2015-11-12

Method for operating a fuel cell system

#124
20150270565
2015-09-24

System and method for recovering output of fuel cell

#125
20150207159
2015-07-23

Fuel cell system and control method thereof

#126
20150171444
2015-06-18

Fuel cell system

#127
20150024295
2015-01-22

Humidity control method including AC impedance measurement for fuel cell and a fuel cell system

#128
20140370413
2014-12-18

Fuel cell water drain valve control with vehicle tilt compensation

#129
20140349206
2014-11-27

Heat recovery apparatus based on fuel cell and operating method thereof

#130
20140349201
2014-11-27

Fuel cell assembly and method of control

#131
20140335430
2014-11-13

Fuel cell system and operating method therefor

#132
20140272630
2014-09-18

Cathode humidification unit adapting degradation factor

#133
20140236535
2014-08-21

Apparatus and method for softsensing fuel cell system

#134
20140186726
2014-07-03

Method to diagnose fuel cell humidification problems

#135
20140162160
2014-06-12

Fuel cell failure prediction apparatus

#136
20140162152
2014-06-12

Control system for a sealed coolant flow field fuel cell power plant having a water reservoir

#137
20140147759
2014-05-29

Vehicle application for air storage cathode carbon loss estimation

#138
20140127598
2014-05-08

Reforming system, fuel cell system, and its operation method

#139
20140113207
2014-04-24

Fuel cell system for generating energy and water

#140
20140093796
2014-04-03

Wet state control device for fuel cell

#141
20140051000
2014-02-20

Fuel cell system

#142
20140023947
2014-01-23

Solid oxide fuel cell device

#143
20140023946
2014-01-23

Solid oxide fuel cell device

#144
20140011105
2014-01-09

Reverse flow relief valve for a fuel cell system

#145
20130295477
2013-11-07

Fuel cell system including a fuel cell and a controller for controlling water vapor amount or average flow rate of a fuel gas

#146
20130295475
2013-11-07

System and method for controlling fuel cell module

#147
20130252116
2013-09-26

Model Based Approach For In-Situ WVTD Degradation Detection In Fuel Cell Vehicles

#148
20130157161
2013-06-20

Fuel cell system and control method for fuel cell system

#149
20130065150
2013-03-14

Fuel cell system

#150
20130057292
2013-03-07

Fuel cell system

#151
20130045429
2013-02-21

Solid Oxide Fuel Cell System

#152
20130022884
2013-01-24

Three-way diverter assembly for a fuel cell system

#153
20120308905
2012-12-06

Fuel cell system and control method of same

#154
20120251909
2012-10-04

Pressure-based liquid level detection and control for a fuel cell stack assembly

#155
20120219872
2012-08-30

FUEL CELL SYSTEM AND METHOD OF CONTROLLING FUEL CELL SYSTEM

#156
20120148927
2012-06-14

Controller for estimating relative humidity and condensed water, and method for controlling condensed water drain using the same

#157
20120135324
2012-05-31

DEVICE FOR REMOVING GENERATED WATER

#158
20120100445
2012-04-26

Fuel cell system and method of operating fuel cell system

#159
20120094196
2012-04-19

Hybrid fuel cell

#160
20120082913
2012-04-05

System and method for determining a state of operational readiness of a fuel cell backup system of a nuclear reactor system

#161
20120082912
2012-04-05

System and method for maintaining and establishing operational readiness in a fuel cell backup system of a nuclear reactor system

#162
20120082911
2012-04-05

System and method for maintaining and establishing operational readiness in a fuel cell backup system of a nuclear reactor system

#163
20120070751
2012-03-22

Closed loop type fuel cell system

#164
20120058404
2012-03-08

Fuel cell system

#165
20120040260
2012-02-16

FUEL CELL SYSTEM AND WATER DRAINING METHOD FOR FUEL CELL SYSTEM

#166
20120015263
2012-01-19

Method and apparatus for determining humidity states of individual cells in a fuel cell, method and apparatus for controlling humidity states of individual cells in a fuel cell, and a fuel cell system

#167
20110269046
2011-11-03

Fuel cell system

#168
20110236781
2011-09-29

FUEL CELL COOLING

#169
20110196554
2011-08-11

Method and Control Unit for Automatic Selection of an Operating Mode for a Vehicle With Fuel Cells

#170
20110143233
2011-06-16

FUEL CELL SYSTEM AND CONTROL METHOD THEREFOR

#171
20110104580
2011-05-05

Fuel cell system

#172
20110091780
2011-04-21

In-situ fuel cell stack reconditioning

#173
20110033763
2011-02-10

Fuel cell system and reverse flow relief valve

#174
20110003215
2011-01-06

Fuel cell system capable of drying a fuel cell in a short time after a system stop instruction is used

#175
20100323260
2010-12-23

Fuel cell system for impedance measurement and scavenging processing

#176
20100304237
2010-12-02

Reforming system, fuel cell system, and its operation method

#177
20100291446
2010-11-18

Fuel cell system

#178
20100273082
2010-10-28

Structure and method for optimizing system efficiency when operating an SOFC system with alcohol fuels

#179
20100248048
2010-09-30

Fuel cell system having controllable water feed flow rate

#180
20100227242
2010-09-09

Fuel cell system, and operation method for fuel cell

#181
20100221632
2010-09-02

Method and Apparatus for Forming a Wetting Nominal Value for a Fuel Cell Unit

#182
20100221622
2010-09-02

Operation method at the time of load increase of fuel cell system

#183
20100221621
2010-09-02

Operation method at the time of load reduction of fuel cell system

#184
20100203407
2010-08-12

Fuel cell system with regeneration of electrode activity during start or stop

#185
20100190076
2010-07-29

TWO STAGE, HFR-FREE FREEZE PREPARATION SHUTDOWN STRATEGY

#186
20100190071
2010-07-29

Fuel cell system and operating method therefor

#187
20100190070
2010-07-29

Fuel cell system

#188
20100188108
2010-07-29

Liquid water sensor signal conditioning circuit for use in PEM fuel cells

#189
20100167133
2010-07-01

SOLID OXIDE FUEL CELL SYSTEM

#190
20100159340
2010-06-24

Fuel cell stack with stoichiometry determination in individual cells

#191
20100124681
2010-05-20

Fuel cell system comprising fuel cell stack, and method for producing fuel cell stack

#192
20100119899
2010-05-13

FUEL CELL SYSTEM

#193
20100112387
2010-05-06

FUEL CELL MOTOR VEHICLE AND CONTROL METHOD THEREFOR

#194
20100086811
2010-04-08

Controlling an amount of liquid within a fuel cell

#195
20100077783
2010-04-01

Solid oxide fuel cell assisted air conditioning system

#196
20100047635
2010-02-25

Hydrating A Reactant Flow Of An Electrochemical Stack

#197
20100015482
2010-01-21

Fuel cell system

#198
20090317676
2009-12-24

Three-way diverter assembly for a fuel cell system

#199
20090305099
2009-12-10

Startup reliability using HFR measurement

#200
20090305088
2009-12-10

MODIFIED STARTUP STRATEGY TO IMPROVE STARTUP RELIABILITY AFTER EXTENDED OFF TIME

#201
20090263687
2009-10-22

Fuel Cell System Having Hydrogen Generating Apparatus

#202
20090214909
2009-08-27

Fuel cell with anode exhaust recirculation means

#203
20090142630
2009-06-04

Fuel cell apparatus

#204
20090123802
2009-05-14

FUEL CELL HAVING MOISTURE SENSOR DEVICE

#205
20090081523
2009-03-26

FUEL CELL COVER

#206
20090061269
2009-03-05

Fuel cell system and control method therefor

#207
20080248340
2008-10-09

Fuel cell system

#208
20080226956
2008-09-18

Cold start compressor control and mechanization in a fuel cell system

#209
20080187787
2008-08-07

Fuel cell stack end cell control methodology

#210
20080152959
2008-06-26

Methods for fuel cell system optimization

#211
20080138692
2008-06-12

FUEL CELL APPARATUS

#212
20080113232
2008-05-15

Fuel Cell System

#213
20080050626
2008-02-28

Control strategy to prevent humidity cycling in a fuel cell

#214
20080044693
2008-02-21

Fuel cell system and method for controlling current

#215
20080038605
2008-02-14

Electronic equipment having fuel cell with gaseous water discharging section

#216
20070196709
2007-08-23

Fuel cell system and control method of same

#217
20070141410
2007-06-21

Direct oxidation fuel cell system

#218
20070072016
2007-03-29

METHODS AND APPARATUS FOR IMPROVING THE COLD STARTING CAPABILITY OF A FUEL CELL

#219
20070048581
2007-03-01

Fuel cell system

#220
20070042248
2007-02-22

EXTINGUISHING SYSTEM FOR FUEL CELL

#221
20060240299
2006-10-26

Fuel cell vehicle and water discharging method for fuel cell vehicle

#222
20060222924
2006-10-05

Prevention of flooding of fuel cell stack

#223
20060201247
2006-09-14

RELATIVE HUMIDITY SENSOR ENCLOSED WITH FORMED HEATING ELEMENT

#224
20060141299
2006-06-29

Detecting and handling a fault condition in a fuel cell system

#225
20060134472
2006-06-22

Summer and winter mode operation of fuel cell stacks

#226
20060115693
2006-06-01

Test station for a fuel cell power module

#227
20060088742
2006-04-27

Fuel cell system for scavenging signal pressure line for regulator

#228
20060068240
2006-03-30

Fuel cell system

#229
20060052916
2006-03-09

Gasoline fuel cell power system transient control

#230
20060014062
2006-01-19

Method and apparatus for level control in a water tank of a fuel reformer

#231
20050287402
2005-12-29

AC impedance monitoring of fuel cell stack

#232
20050227125
2005-10-13

Transient controls to improve fuel cell performance and stack durability

#233
20050214605
2005-09-29

Fuel cell system and method of discontinuing same

#234
20050142400
2005-06-30

Safe purging of water from fuel cell stacks