ClassID:

213489

H01M8/04492 - 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 the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function Humidity; Ambient humidity; Water content

Sub-classes:
Recent Application in this class:
#1
20260128330
2026-05-07

FUEL CELL SYSTEM, VEHICLE & METHOD FOR SUPPRESSING MIST FORMATION

#2
20260058174
2026-02-26

SEALING AIR AND PURGE SUPPLY IN A FUEL CELL SYSTEM VIA AN AIR RESERVOIR

#3
20260048685
2026-02-19

METHOD AND SYSTEM FOR CONTROLLING A FUEL CELL ELECTRIC VEHICLE UNDER A POWER CONSERVATION MODE

#4
20260038856
2026-02-05

SYSTEMS AND METHODS FOR MULTI-INPUT CATHODE LOOP CONTROL FOR FUEL CELLS

#5
20250385287
2025-12-18

SAFETY ELEMENT, CLEAN AIR DUCT AND CATHODE AIR FILTER OF FUEL CELL SYSTEM

#6
20250343252
2025-11-06

CONDENSATE WATER DRAIN CONTROL SYSTEM AND CONTROL METHOD FOR FUEL CELL

#7
20250329761
2025-10-23

INTERMITTENT EXHAUST GAS RECIRCULATION DURING OPERATION OF A FUEL CELL SYSTEM

#8
20250316732
2025-10-09

FUEL CELL SYSTEM WITH RADIATOR AND CONTROL METHOD THEREOF

#9
20250316726
2025-10-09

Fuel Cell System and Control Method Thereof

#10
20250309293
2025-10-02

ENERGY GENERATION SYSTEM

#11
20250273709
2025-08-28

FUEL CELL SYSTEM

#12
20250260031
2025-08-14

FUEL CELL SYSTEM

#13
20250201876
2025-06-19

ADAPTIVE PURGING FOR A FUEL CELL SYSTEM

#14
20250192211
2025-06-12

FUEL CELL SYSTEM AND FUEL CELL SYSTEM CONTROL METHOD

#15
20250174685
2025-05-29

FUEL CELL SYSTEM

#16
20250132368
2025-04-24

FUEL CELL MODULE

#17
20250112255
2025-04-03

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

#18
20250105322
2025-03-27

SYSTEMS AND METHODS OF FUEL CELL HUMIDIFIER LEAK DETECTION

#19
20250105320
2025-03-27

DYNAMIC FUEL CELL STACK SWITCHING

#20
20250070207
2025-02-27

METHOD FOR COOLING A FUEL CELL SYSTEM AND FUEL CELL SYSTEM

#21
20250062374
2025-02-20

VEHICLE WITH FUEL CELL CONTROL SYSTEM AND MODES OF OPERATION

#22
20250046838
2025-02-06

METHOD FOR DIAGNOSING THE OPERATING STATUS OF A FUEL CELL SYSTEM, METHOD FOR CONTROLLING A FUEL CELL SYSTEM, AND A FUEL CELL SYSTEM

#23
20250023069
2025-01-16

FUEL CELL SYSTEM

#24
20250006962
2025-01-02

A METHOD FOR DETERMINING A STARTING SEQUENCE FOR A FUEL CELL ARRANGEMENT COMPRISING A PLURALITY OF FUEL CELL SYSTEMS BASED ON SHUTDOWN DURATION TIME

#25
20240413358
2024-12-12

COGENERATION SYSTEM

#26
20240405236
2024-12-05

FUEL CELL STACK SENSOR AND A METHOD FOR OPERATING THE SAME

#27
20240387843
2024-11-21

ION ANALYSIS DEVICE AND FUEL CELL EVALUATION SYSTEM

#28
20240282987
2024-08-22

System for Generating Electricity and Hydrogen

#29
20240258542
2024-08-01

FUEL CELL SYSTEM AND METHOD FOR DETERMINING NO-LOAD OPERATION STATE THEREOF

#30
20240194908
2024-06-13

METHOD FOR PURGING A REACTANT CHAMBER

#31
20240170770
2024-05-23

LITHIUM-AIR BATTERY-BASED POWER SUPPLY APPARATUS AND CONTROL METHOD THEREOF

#32
20240120515
2024-04-11

FUEL CELL SYSTEM

#33
20240113312
2024-04-04

FUEL CELL SYSTEM AND METHOD FOR DRAINING CONDENSATE WATER THEREOF

#34
20240105976
2024-03-28

FUEL CELL SYSTEM

#35
20240079617
2024-03-07

SYSTEMS AND METHODS FOR CONTROLLING AIR FLOW AT A FUEL CELL

#36
20240072274
2024-02-29

Computer-implemented method for estimating a state of health of a humidifier of a fuel cell system for a vehicle

#37
20240072273
2024-02-29

COMPUTER-IMPLEMENTED METHOD FOR DETERMINING A DEGRADATION STATE OF A TURBO AND/OR A HUMIDIFIER OF A FUEL CELL SYSTEM

#38
20240021849
2024-01-18

AIRCRAFT FLUID RELEASE SYSTEM

#39
20240006638
2024-01-04

FUEL CELL SYSTEM

#40
20230395832
2023-12-07

FUEL CELL POWER GENERATION SYSTEM AND CONTROL METHOD OF FUEL CELL POWER GENERATION SYSTEM

#41
20230369618
2023-11-16

FUEL CELL CONTROL COMMAND DEVICE

#42
20230369617
2023-11-16

ENVIRONMENTAL CONTROL SYSTEM HAVING A FUEL CELL ASSEMBLY

#43
20230361324
2023-11-09

FUEL CELL STACK HAVING A SENSOR, AND METHOD USED FOR PRODUCING A FUEL CELL STACK HAVING THE SENSOR

#44
20230317988
2023-10-05

FUEL CELL SYSTEM

#45
20230268524
2023-08-24

HUMIDIFIER FOR FUEL CELL

#46
20230223570
2023-07-13

Fuel cell system and method for controlling the same

#47
20230170502
2023-06-01

PURGE SYSTEMS AND METHODS IN A FUEL CELL SYSTEM

#48
20230163334
2023-05-25

CATALYST DETERIORATION SUPPRESSION DEVICE

#49
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

#50
20230054074
2023-02-23

Method of controlling fuel cell

#51
20230051038
2023-02-16

RECIRCULATION SYSTEM AND SUPPLY SYSTEM COMPRISING SAID SYSTEM

#52
20230045498
2023-02-09

Fuel cell stack, fuel cell device and motor vehicle with a fuel cell device

#53
20220416270
2022-12-29

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

#54
20220416264
2022-12-29

METHOD OF MONITORING AND REPLACING FUEL CELL STACKS WITHIN A FUEL CELL STACK ASSEMBLY

#55
20220336830
2022-10-20

Water removing system and method of fuel cell vehicle using impedance

#56
20220320540
2022-10-06

FUEL CELL SYSTEM AND CONDENSATE WATER STORAGE DEVICE

#57
20220311029
2022-09-29

Method of operating water electrolysis and electricity generating system

#58
20220223889
2022-07-14

INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING SYSTEM, AND PROGRAM

#59
20220216490
2022-07-07

Controlling purge operation for fuel cell assembly

#60
20220106060
2022-04-07

HEALTH ASSESSMENT AND MONITORING SYSTEM AND METHOD FOR CLEAN FUEL ELECTRIC VEHICLES

#61
20210367260
2021-11-25

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

#62
20210313604
2021-10-07

Fuel cell system

#63
20210202975
2021-07-01

Fuel cell device and systems enabling cell-level repair

#64
20210091396
2021-03-25

Failure detection processing method

#65
20210028474
2021-01-28

Apparatus and method for controlling emergency driving for fuel cell vehicle

#66
20200408843
2020-12-31

Electric energy supply system having at least one cell element and motor vehicle

#67
20200358114
2020-11-12

Water removing system and method of fuel cell vehicle using impedance

#68
20200321637
2020-10-08

Fuel cell system

#69
20200317061
2020-10-08

Fuel cell vehicle

#70
20200168927
2020-05-28

Method of outputting a water level of a capacitive level sensor for a water trap of a fuel cell system

#71
20200161671
2020-05-21

FUEL CELL SYSTEM CONTAINING HUMIDITY SENSOR AND METHOD OF OPERATING THEREOF

#72
20200147514
2020-05-14

Atmospheric water generator for extracting water droplets from ambient air

#73
20200136159
2020-04-30

Method to control maximum current for a fuel cell

#74
20200136158
2020-04-30

CONDENSATE WATER DRAIN CONTROL SYSTEM AND CONTROL METHOD FOR FUEL CELL

#75
20200119375
2020-04-16

Method and system for removing residual water in fuel cell stack

#76
20200036020
2020-01-30

Water detection device and power generation cell

#77
20200036018
2020-01-30

Fuel cell system

#78
20190393526
2019-12-26

CLOSED LOOP CONTROL FOR FUEL CELL WATER MANAGEMENT

#79
20190372142
2019-12-05

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

#80
20190372141
2019-12-05

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

#81
20190363384
2019-11-28

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

#82
20190356005
2019-11-21

Fuel cell system and method for controlling the same

#83
20190348698
2019-11-14

Method and molten salt electrolytic cell for implementing a hydrogen fuel, sustainable, closed clean energy cycle on a large scale

#84
20190288313
2019-09-19

Fuel cell system and control method of fuel cell system

#85
20190245227
2019-08-08

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

#86
20190181465
2019-06-13

Fuel cell control method and control system

#87
20190173108
2019-06-06

Power supply device, apparatus, and control method

#88
20190157695
2019-05-23

Fuel cell system and method of controlling fuel cell system

#89
20190140297
2019-05-09

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

#90
20190140288
2019-05-09

Fuel cell system containing humidity sensor and method of operating thereof

#91
20190137571
2019-05-09

Fuel cell stack prediction utilizing IHOS

#92
20190115605
2019-04-18

Fuel cell system

#93
20190081340
2019-03-14

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

#94
20190018067
2019-01-17

Artificial intelligent fuel cell system

#95
20180342746
2018-11-29

Method of controlling an ignition of a fuel cell vehicle

#96
20180294494
2018-10-11

Fuel cell system

#97
20180294491
2018-10-11

Fuel cell vehicle

#98
20180269503
2018-09-20

Fuel cell system controller and associated method

#99
20180183081
2018-06-28

Fuel cell system and method of controlling the same

#100
20180126865
2018-05-10

Technique of diagnosing fuel cell stack

#101
20180053952
2018-02-22

State detection device and method for fuel cell

#102
20170358809
2017-12-14

Electric power supply system, mobile object, and electric power supply method

#103
20170352904
2017-12-07

Fuel cell assembly and associated method of operation

#104
20170352897
2017-12-07

Cooling system for fuel cells

#105
20170346112
2017-11-30

Gas and condensed water discharge system for fuel cell system and control method thereof

#106
20170346106
2017-11-30

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

#107
20170309935
2017-10-26

Power distribution method and system for fuel cell vehicle

#108
20170200959
2017-07-13

Method and system for eliminating reverse current decay in fuel cells

#109
20170179510
2017-06-22

Fuel cell and fuel cell system

#110
20170170501
2017-06-15

Fuel cell system and method of controlling the same

#111
20170162888
2017-06-08

Power generator having fuel cell and membrane conduits

#112
20170104231
2017-04-13

Fuel cell system and performance improvement method of fuel cell system

#113
20170077534
2017-03-16

Fuel cell regulation using loss recovery systems

#114
20160372768
2016-12-22

Method for cold-start of fuel cell stack

#115
20160344080
2016-11-24

Metal air battery having air purification module and method of operating the metal air battery

#116
20160301091
2016-10-13

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

#117
20160276685
2016-09-22

BATTERY, METHOD OF SWITCHING HYDROGEN STORAGE CONTAINER, AND RECORDING MEDIUM

#118
20160276684
2016-09-22

Fuel cell and abnormality determination method

#119
20160276682
2016-09-22

Fuel cell humidification device and fuel cell motorcycle

#120
20160248111
2016-08-25

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

#121
20160211536
2016-07-21

System and method for controlling fuel cell of vehicle

#122
20160172693
2016-06-16

Perceiving method and system of stack state for fuel cell system

#123
20160164126
2016-06-09

Device and method for monitoring dryness of fuel cell stack

#124
20160141688
2016-05-19

Fuel cell system and dryness degree acquisition method

#125
20160141674
2016-05-19

FUEL CELL SYSTEM AND METHOD OF RECOVERYING CELL VOLTAGE THEREOF

#126
20160141668
2016-05-19

Fuel cell system and start-up method thereof

#127
20160141656
2016-05-19

Fuel cell system and control method therefor

#128
20160126566
2016-05-05

Fuel cell system

#129
20160111736
2016-04-21

Fuel cell system programmed for improved air compressor control

#130
20160087293
2016-03-24

Ventilation apparatus and control method thereof

#131
20160087289
2016-03-24

Gas and condensed water discharge system for fuel cell system and control method thereof

#132
20160079619
2016-03-17

Humidification apparatus for fuel cell system

#133
20160064756
2016-03-03

Fuel cell system and method of controlling the fuel cell system

#134
20160036077
2016-02-04

Apparatus and method for managing fuel cell vehicle system

#135
20160036075
2016-02-04

Device for adjusting hollow fiber membrane density for humidification device of fuel cell

#136
20160006060
2016-01-07

Method of controlling operation of fuel cell system

#137
20150380755
2015-12-31

FUEL CELL SYSTEM AND FUEL CELL VEHICLE

#138
20150372328
2015-12-24

Operation method of fuel cell system and fuel cell system

#139
20150362560
2015-12-17

System and method for diagnosing state of fuel cell stack and controlling fuel cell system

#140
20150349358
2015-12-03

Fuel cell system and control method for the same

#141
20150325865
2015-11-12

Method for operating a fuel cell system

#142
20150311547
2015-10-29

Fuel cell cathode balance of plant freeze strategy

#143
20150295258
2015-10-15

Ascertaining fuel cell inlet humidity by means of pressure sensors, and a mass flow rate-dependent control of the humidifier bypass

#144
20150244013
2015-08-27

Control device of fuel cell, fuel cell system and control method of fuel cell

#145
20150244010
2015-08-27

Method and apparatus for diagnosing state of fuel cell system

#146
20150194684
2015-07-09

Cooling system for fuel cells

#147
20150171446
2015-06-18

Fuel cell system and driving control method thereof

#148
20150171444
2015-06-18

Fuel cell system

#149
20150125767
2015-05-07

Fuel cell system and control method for the same

#150
20150064589
2015-03-05

Fuel cell system and its control method

#151
20150024295
2015-01-22

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

#152
20150004506
2015-01-01

Fuel cell system

#153
20140370413
2014-12-18

Fuel cell water drain valve control with vehicle tilt compensation

#154
20140349206
2014-11-27

Heat recovery apparatus based on fuel cell and operating method thereof

#155
20140335430
2014-11-13

Fuel cell system and operating method therefor

#156
20140295302
2014-10-02

Fuel cell monitoring device

#157
20140220470
2014-08-07

Fuel cell system for calculating fuel cell temperature based on water content and internal impedance thereof, and method for controlling the same

#158
20140186735
2014-07-03

Method of operating fuel cell system

#159
20140186726
2014-07-03

Method to diagnose fuel cell humidification problems

#160
20140162152
2014-06-12

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

#161
20140162151
2014-06-12

Humidification control method for fuel cell

#162
20140159738
2014-06-12

Method and apparatus for diagnosing fault within fuel cell stack

#163
20140120436
2014-05-01

Fuel cell humidification management method and system

#164
20140113207
2014-04-24

Fuel cell system for generating energy and water

#165
20140080023
2014-03-20

Apparatus and method for managing stationary fuel cell system

#166
20140080022
2014-03-20

Apparatus and method for managing fuel cell vehicle system

#167
20140051000
2014-02-20

Fuel cell system

#168
20130252116
2013-09-26

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

#169
20130149628
2013-06-13

METHOD OF ESTIMATING AMIOUNT OF LIQUID WATER IN FUEL CELL, METHOD OF ESTIMATING AMOUNT OF LIQUID WATER DISCHARGED FROM FUEL CELL, ESTIMATION APPARATUS OF LIQUID WATER AMOUNT IN FUEL CELL AND FUEL CELL SYSTEM

#170
20130089797
2013-04-11

Anode purge and drain valve strategy for fuel cell system

#171
20130084509
2013-04-04

Apparatus including fuel cell and electrolyzer and method for controlling fuel cell operating conditions of the apparatus

#172
20130065150
2013-03-14

Fuel cell system

#173
20130065088
2013-03-14

INTEGRATED STARTER ELEMENT FOR A FUEL CELL IN A HANDHELD DEVICE

#174
20130052931
2013-02-28

Device and method for enhanced air circulation

#175
20130052545
2013-02-28

Fuel cell system with calculation of liquid water volume

#176
20130045429
2013-02-21

Solid Oxide Fuel Cell System

#177
20130040217
2013-02-14

Fuel cell system and control method for the same

#178
20130029235
2013-01-31

Fuel cell system and method of controlling the fuel cell system

#179
20130022884
2013-01-24

Three-way diverter assembly for a fuel cell system

#180
20120328965
2012-12-27

Power generator having fuel cell and membrane conduits

#181
20120308905
2012-12-06

Fuel cell system and control method of same

#182
20120292183
2012-11-22

Stand-Alone Water Detection Device That Includes a Hydrogen Source

#183
20120288776
2012-11-15

Fuel cell system and control method for fuel cell system

#184
20120270126
2012-10-25

Fuel cell system and control method thereof

#185
20120251910
2012-10-04

Method for controlling fuel cell system with in-stop-mode power generating process and startup process

#186
20120248872
2012-10-04

Electric power supply system

#187
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

#188
20120148927
2012-06-14

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

#189
20120141899
2012-06-07

Method of controlling water content of fuel cell and fuel cell system

#190
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

#191
20120058408
2012-03-08

Fuel cell systems with a cover and related methods

#192
20120058404
2012-03-08

Fuel cell system

#193
20120040260
2012-02-16

FUEL CELL SYSTEM AND WATER DRAINING METHOD FOR FUEL CELL SYSTEM

#194
20120021321
2012-01-26

Fuel cell system

#195
20120019255
2012-01-26

Stack-powered fuel cell monitoring device with prioritized arbitration

#196
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

#197
20120003557
2012-01-05

Fuel cell system and start-up control method therefor

#198
20110274993
2011-11-10

Fuel cell system

#199
20110183223
2011-07-28

Fuel cell system and method of controlling fuel cell system

#200
20110171558
2011-07-14

Fuel cell

#201
20110143233
2011-06-16

FUEL CELL SYSTEM AND CONTROL METHOD THEREFOR

#202
20110104580
2011-05-05

Fuel cell system

#203
20110091780
2011-04-21

In-situ fuel cell stack reconditioning

#204
20110076582
2011-03-31

Method to improve fuel cell system performance using cell voltage prediction of fuel cell stack

#205
20100304244
2010-12-02

Solid oxide fuel cell device

#206
20100273082
2010-10-28

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

#207
20100266917
2010-10-21

Fuel cell systems with maintenance hydration by displacement of primary power

#208
20100248058
2010-09-30

FUEL CELL MODULE

#209
20100239930
2010-09-23

Fuel cell system and method of controlling the same

#210
20100239929
2010-09-23

FUEL CELL SYSTEM

#211
20100221622
2010-09-02

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

#212
20100221621
2010-09-02

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

#213
20100209808
2010-08-19

Fuel cell and electrode powder constituting the catalytic layer thereof

#214
20100203409
2010-08-12

Fuel cell system and its control method

#215
20100203407
2010-08-12

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

#216
20100203405
2010-08-12

Fuel cell system and method of operating the fuel cell system

#217
20100190071
2010-07-29

Fuel cell system and operating method therefor

#218
20100190070
2010-07-29

Fuel cell system

#219
20100183930
2010-07-22

Method for controlling a water based fuel reformer

#220
20100179774
2010-07-15

METHOD FOR EVALUATING DURABILITY OF UNIT CELL, DEVICE FOR EVALUATING DURABILITY, PROGRAM FOR EVALUATING DURABILITY, AND UNIT CELL OF FUEL CELL

#221
20100173210
2010-07-08

Fuel cell system and control method of the system

#222
20100167144
2010-07-01

Fuel cell system and operation method thereof

#223
20100167133
2010-07-01

SOLID OXIDE FUEL CELL SYSTEM

#224
20100124681
2010-05-20

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

#225
20100119898
2010-05-13

FUEL CELL SYSTEM

#226
20100104896
2010-04-29

Device and method for augmenting the useful life of an energy storage device

#227
20100068574
2010-03-18

Fuel cell system and power supply control method

#228
20100047635
2010-02-25

Hydrating A Reactant Flow Of An Electrochemical Stack

#229
20100040915
2010-02-18

Hydrogen generator, fuel cell system and their operating methods

#230
20100003561
2010-01-07

Fuel cell system

#231
20090317677
2009-12-24

Device and method for enhanced air circulation

#232
20090317676
2009-12-24

Three-way diverter assembly for a fuel cell system

#233
20090305088
2009-12-10

MODIFIED STARTUP STRATEGY TO IMPROVE STARTUP RELIABILITY AFTER EXTENDED OFF TIME

#234
20090297894
2009-12-03

Rehydration of fuel cells

#235
20090269635
2009-10-29

Fuel cell system capable of reducing deterioration of fuel cell

#236
20090269632
2009-10-29

APPARATUS AND METHOD FOR MOISTURIZING A GAS FLOW FLOWING TO A FUEL CELL

#237
20090258257
2009-10-15

Fuel cell system having wet-state determination

#238
20090208786
2009-08-20

FUEL CELL SYSTEM

#239
20090191435
2009-07-30

Covers for electrochemical cells and related methods

#240
20090169934
2009-07-02

Fuel cell system

#241
20090155651
2009-06-18

Fuel cell system and generation control device

#242
20090142633
2009-06-04

Fuel cell system and mobile article

#243
20090110970
2009-04-30

Fuel cell system, control method therefor, and movable body

#244
20090061269
2009-03-05

Fuel cell system and control method therefor

#245
20090061263
2009-03-05

FUEL CELL SYSTEM AND METHOD FOR ESTIMATING OUTPUT CHARACTERISTIC OF FUEL CELL

#246
20090038867
2009-02-12

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