ClassID:

213477

H01M8/04402 - 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; Pressure; Ambient pressure; Flow of anode exhausts

Recent Application in this class:
#1
20260149016
2026-05-28

FUEL CELL SYSTEM

#2
20260038853
2026-02-05

FUEL CELL SYSTEM AND CONTROL METHOD OF FUEL CELL SYSTEM

#3
20260018639
2026-01-15

ARTIFICIAL PHOTOSYNTHESIS ENERGY SYSTEMS AND METHODS

#4
20250336992
2025-10-30

COMBINED PREDICTION METHOD FOR PROTON EXCHANGE MEMBRANE (PEM) DEVICE, APPARATUS, MEDIUM, AND PRODUCT

#5
20250192198
2025-06-12

EJECTOR FOR FUEL CELL AND FUEL CELL

#6
20250030020
2025-01-23

DIAGNOSIS SYSTEMS AND METHODS FOR FUEL CELL ASSEMBLIES

#7
20240347747
2024-10-17

FUEL CELL SYSTEM

#8
20240332573
2024-10-03

FUEL CELL SYSTEM

#9
20240055633
2024-02-15

METHOD FOR DETERMINING THE LENGTH AND/OR VOLUME OF THE PURGE PATH WITHIN A FUEL CELL SYSTEM

#10
20230378493
2023-11-23

HYDROGEN POWERED FUEL CELL SYSTEM INCLUDING CONDENSER AND METHOD OF OPERATING THE SAME USING PRESSURE CONTROL

#11
20230378489
2023-11-23

FUEL CELL SYSTEM

#12
20230361321
2023-11-09

FUEL CELL POWER SYSTEM INCLUDING AIR FLOW CONTROL AND METHOD OF OPERATING THEREOF

#13
20230327149
2023-10-12

Fuel cell with protection from pressure imbalance

#14
20230299316
2023-09-21

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

#15
20230197994
2023-06-22

Reforming catalyst pattern for fuel cell operated with enhanced COutilization

#16
20230051038
2023-02-16

RECIRCULATION SYSTEM AND SUPPLY SYSTEM COMPRISING SAID SYSTEM

#17
20220407091
2022-12-22

SOFC cooling system, fuel cell and hybrid vehicle

#18
20220352532
2022-11-03

FUEL CELL SYSTEM AND FLYING OBJECT INCLUDING THE FUEL CELL SYSTEM

#19
20220320546
2022-10-06

System and methods for monitoring and controlling emissions from fuel cell engines

#20
20220102743
2022-03-31

Electrochemical cell system

#21
20210399320
2021-12-23

DETERMINING THE MASS FLOW OF AN EXHAUST GAS CONSTITUENT OF A FUEL CELL

#22
20210367248
2021-11-25

Fuel-cell hydrogen recycling means

#23
20210257634
2021-08-19

Method of detecting degradation of membrane electrode assembly in fuel cell system

#24
20210175530
2021-06-10

Method for treating hydrogen-containing and oxygen-containing residual gases of fuel cells, and residual gas treatment system

#25
20210175524
2021-06-10

Fuel cell with protection from pressure imbalance

#26
20210075045
2021-03-11

Fuel cell system and opening/closing method for discharge valve

#27
20210013529
2021-01-14

Fuel cell system and method for controlling fuel cell system

#28
20200343568
2020-10-29

Method for releasing a fuel cell system and fuel cell system

#29
20200321637
2020-10-08

Fuel cell system

#30
20200313211
2020-10-01

Fuel cell comprising a pressure regulating device and method for regulating pressure

#31
20200266463
2020-08-20

Method for operating a fuel cell

#32
20200256756
2020-08-13

METHOD AND SYSTEM FOR DETECTING A LEAK IN A FLUID SYSTEM

#33
20200185737
2020-06-11

Purge circuit of a fuel cell

#34
20200176800
2020-06-04

Reforming catalyst pattern for fuel cell operated with enhanced COutilization

#35
20200176796
2020-06-04

Methods and systems for controlling water imbalance in an electrochemical cell

#36
20200176789
2020-06-04

Operation of molten carbonate fuel cells with enhanced COutilization

#37
20200161671
2020-05-21

FUEL CELL SYSTEM CONTAINING HUMIDITY SENSOR AND METHOD OF OPERATING THEREOF

#38
20200144644
2020-05-07

FUEL CELL SYSTEM

#39
20200036018
2020-01-30

Fuel cell system

#40
20200014047
2020-01-09

Fuel cell system

#41
20190356004
2019-11-21

Fuel cell system

#42
20190267646
2019-08-29

Fuel cell system and method of controlling fuel cell

#43
20190260042
2019-08-22

Fuel cell system and control method thereof

#44
20190198900
2019-06-27

Fuel cell system, mobile object, and exhaust gas discharge control method

#45
20190173111
2019-06-06

Fuel cell system

#46
20190044166
2019-02-07

PRESSURE CONTROL SYSTEM, FUEL CELL ASSEMBLY AND USE OF SAID CONTROL SYSTEM

#47
20190036140
2019-01-31

Fuel cell system

#48
20190036133
2019-01-31

Method for determining a content of a gas component in a gas mixture conveyed in a recirculating manner via a fuel cell

#49
20180375131
2018-12-27

Measuring method and measuring apparatus for determining the recirculation rate

#50
20180316029
2018-11-01

Fuel cell architectures, monitoring systems, and control logic for characterizing fluid flow in fuel cell stacks

#51
20180301719
2018-10-18

Motor vehicle with a fuel cell

#52
20180287172
2018-10-04

System for electrolysing water (SOEC) or fuel-cell stack (SOFC) operating under pressure, the regulation of which is improved

#53
20180272888
2018-09-27

Fuel cell system for vehicle

#54
20180166716
2018-06-14

Fuel cell system and control method of fuel cell system

#55
20180151902
2018-05-31

FUEL CELL SYSTEM

#56
20180151897
2018-05-31

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

#57
20180006319
2018-01-04

Fuel cell system and control method thereof

#58
20170373334
2017-12-28

Fuel cell system

#59
20170250421
2017-08-31

Method of detecting abnormality in pressure sensor and fuel cell system

#60
20170162886
2017-06-08

Fuel cell system

#61
20170092972
2017-03-30

Relative humidity estimators for fuel cell stack ports

#62
20170062848
2017-03-02

Process control for integrated hydrogen storage in fuel cell energy storage system

#63
20170012306
2017-01-12

Purge circuit of a fuel cell

#64
20160197366
2016-07-07

Systems and methods for detecting leaks in a fuel cell system

#65
20160141678
2016-05-19

Fuel cell system and a method of detecting a hydrogen gas leak

#66
20160141672
2016-05-19

Fuel cell system and method for discharging fluid in the system

#67
20160141660
2016-05-19

Fuel cell system and control method therefor

#68
20160141659
2016-05-19

Fuel cell system

#69
20160141656
2016-05-19

Fuel cell system and control method therefor

#70
20160133975
2016-05-12

Fuel cell system

#71
20160133972
2016-05-12

Fuel cell system

#72
20160133970
2016-05-12

Fuel cell system and control method of fuel cell system

#73
20150303496
2015-10-22

Power generation system and method for cooling fuel cell exhaust in power generation system

#74
20150221961
2015-08-06

Fuel cell system and control method thereof

#75
20150118586
2015-04-30

Method of operating a fuel cell

#76
20140295302
2014-10-02

Fuel cell monitoring device

#77
20140162171
2014-06-12

Anode leak location detection

#78
20140147771
2014-05-29

Fuel cell, a portable electronic device and a method of manufacturing a fuel cell reservoir

#79
20140033801
2014-02-06

Diagnosing injector failure via stack voltage response analysis

#80
20140026633
2014-01-30

Extremum seeking algorithm in a variable time interval to detect anode pressure sensor stuck failure in a fuel cell system

#81
20130252124
2013-09-26

System and method for activating fuel cells

#82
20130089797
2013-04-11

Anode purge and drain valve strategy for fuel cell system

#83
20130071767
2013-03-21

Fuel cell system

#84
20130022886
2013-01-24

System and method for detecting a fuel cell anode gas composition

#85
20130017465
2013-01-17

LEAKAGE DIAGNOSTIC FOR A FUEL CELL SYSTEM IN IDLE-STOP MODE

#86
20120328911
2012-12-27

System and method for optimizing efficiency and power output from a vanadium redox battery energy storage system

#87
20120291522
2012-11-22

Gas sensor

#88
20120107706
2012-05-03

Fuel cell system and control method at starting in the fuel cell system

#89
20120064422
2012-03-15

Fuel cell system and control method thereof

#90
20120052408
2012-03-01

Membrane permeation adjustment in PEM fuel cell

#91
20120040264
2012-02-16

HYDROGEN CONCENTRATION SENSOR UTILIZING CELL VOLTAGE RESULTING FROM HYDROGEN PARTIAL PRESSURE DIFFERENCE

#92
20120015268
2012-01-19

Fuel cell system, control method for the fuel cell system, and electric vehicle equipped with the fuel cell system

#93
20110250518
2011-10-13

Utilization-based fuel cell monitoring and control

#94
20110165486
2011-07-07

METHOD AND A CONTROL ARRANGEMENT FOR A FUEL CELL DEVICE

#95
20110086279
2011-04-14

FLUID COOLING APPARATUS FOR A FUEL CELL DEVICE AND FUEL CELL SYSTEM

#96
20110033765
2011-02-10

CONSUMPTION-BASED FUEL CELL MONITORING AND CONTROL

#97
20100255386
2010-10-07

Method and system for anode gas recirculation in fuel cells

#98
20100248060
2010-09-30

Fuel cell system and hydrogen leak judgment method in the system

#99
20100248059
2010-09-30

FUEL CELL UNIT AND FUEL CELL STACK

#100
20100190075
2010-07-29

System and method for observing anode fluid composition during fuel cell start-up

#101
20100178578
2010-07-15

System and method for detecting a fuel cell anode gas composition

#102
20100173214
2010-07-08

Controller for fuel cell operation

#103
20100167098
2010-07-01

FUEL CELL SYSTEM AND TRANSPORTATION EQUIPMENT INCLUDING THE SAME

#104
20100151340
2010-06-17

FUEL CELL IN-PLANE STATE ESTIMATING SYSTEM AND FUEL CELL IN-PLANE STATE ESTIMATING METHOD

#105
20100129689
2010-05-27

System and method for activating fuel cell

#106
20100129688
2010-05-27

Methods of operating fuel cell stacks and systems related thereto

#107
20100112387
2010-05-06

FUEL CELL MOTOR VEHICLE AND CONTROL METHOD THEREFOR

#108
20100055523
2010-03-04

FUEL CELL SYSTEM

#109
20100015484
2010-01-21

Fuel cell system

#110
20090280366
2009-11-12

Anode loop observer for fuel cell systems

#111
20090258260
2009-10-15

Fuel cell system and method for calculating circulation ratio in the same

#112
20090197129
2009-08-06

Fuel cell system having decreased deterioration during initiation

#113
20090155651
2009-06-18

Fuel cell system and generation control device

#114
20090145678
2009-06-11

Fuel cell vehicle

#115
20090136793
2009-05-28

HYDROGEN SUPPLY FOR A FUEL CELL SYSTEM

#116
20090117417
2009-05-07

Method for model based exhaust mixing control in a fuel cell application

#117
20090104478
2009-04-23

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

#118
20090098426
2009-04-16

Fuel cell operation system and valve open amount calculation method in the fuel cell operation system

#119
20090081491
2009-03-26

Method for fast and reliable fuel cell system start-ups

#120
20080305373
2008-12-11

Vaporizer and power generation apparatus and electronic equipment in which vaporizer is provided

#121
20080280176
2008-11-13

Fuel cell system with voltage sensor

#122
20080261092
2008-10-23

Fuel Cell System

#123
20080220303
2008-09-11

Fuel cell system supply having a measuring device and a control device

#124
20080171242
2008-07-17

Reformer, Method for Controlling Pump in Fuel Cell System, and Control Unit

#125
20080152972
2008-06-26

Fuel cell start-up control system

#126
20080145714
2008-06-19

Fuel Cell System and Related Method

#127
20080118793
2008-05-22

Fluid flow pulsing for increased stability in PEM fuel cell

#128
20080038593
2008-02-14

Fuel cell system with pressure regulator and method for driving same

#129
20070251297
2007-11-01

Method and apparatus for controlling mass flow rate of recycled anode tail gas in solid oxide fuel cell system

#130
20070224473
2007-09-27

Gas leak detection device and fuel cell system

#131
20070218327
2007-09-20

Failure diagnostic device for discharge valve

#132
20070207355
2007-09-06

Fuel cell system and gas leak determination method for fuel cell system

#133
20070207353
2007-09-06

Cascaded fuel cell stack operation with anode gas recirculation

#134
20070202367
2007-08-30

Fuel cell system and fuel cell system failure judgment method

#135
20070196709
2007-08-23

Fuel cell system and control method of same

#136
20070166485
2007-07-19

Fuel cell system and control method of fuel cell system

#137
20070141418
2007-06-21

Fuel cell system control device

#138
20070082240
2007-04-12

Abnormality detecting device of fuel cell system

#139
20070077472
2007-04-05

Fuel cell system and method of discharging gas from the fuel cell system

#140
20070048571
2007-03-01

Fuel cell system

#141
20070031711
2007-02-08

Fuel-cell system and method for scavenging fuel cell

#142
20070026276
2007-02-01

Fuel cell system and control method of fuel cell system

#143
20060286418
2006-12-21

Fuel cell system for setting predetermined operation state when substitutional value control is impossible

#144
20060280976
2006-12-14

Fuel cell system

#145
20060263651
2006-11-23

Relative humidity profile control strategy for high current density stack operation

#146
20060210853
2006-09-21

Fuel cell system

#147
20060207669
2006-09-21

Valve structure and control techniques

#148
20060166060
2006-07-27

Fuel cell system and gas leak detection method

#149
20060068240
2006-03-30

Fuel cell system

#150
20060003205
2006-01-05

Fuel cell system, mobile unit equipped with the system, and control method for the fuel cell system

#151
20050266285
2005-12-01

Utilization-based fuel cell monitoring and control

#152
20050266284
2005-12-01

Consumption-based fuel cell monitoring and control

#153
20050260463
2005-11-24

Fluid flow pulsing for increased stability in PEM fuel cell

#154
20050214605
2005-09-29

Fuel cell system and method of discontinuing same

#155
20050158614
2005-07-21

System and method for optimizing efficiency and power output from a vanadium redox battery energy storage system

#156
20050136301
2005-06-23

Monitoring fuel cells using RFID devices

#157
20050129993
2005-06-16

Purging anode channels of a fuel cell stack

#158
20050115150
2005-06-02

Hydrogen gas station, fuel cell system, and hydrogen gas rate accounting device

#159
20050100768
2005-05-12

Fuel cell system and method for discharging reaction gas from fuel cell

#160
20050075816
2005-04-07

System and method for controlling a fuel cell testing device

#161
20050037247
2005-02-17

Fuel cell system and method for removal of water from fuel cells

#162
20050029107
2005-02-10

Electrochemical cell system output control method and apparatus

#163
20050008905
2005-01-13

Method and apparatus for regulating electrical power output of a fuel cell system

#164
16181965
2020-03-17

Methods and systems for controlling water imbalance in an electrochemical cell