ClassID:

213481

H01M8/04432 - 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 Pressure differences, e.g. between anode and cathode

Recent Application in this class:
#1
20260074247
2026-03-12

FUEL CELL ADAPTIVE PURGE DRAIN VALVE CONTROL

#2
20260045526
2026-02-12

SYSTEM FOR REBALANCING A PRESSURE DIFFERENTIAL IN A FUEL CELL USING GAS INJECTION

#3
20260018637
2026-01-15

GAS FLOW RATE MEASUREMENT FOR REDOX FLOW BATTERY SYSTEMS AND OTHER CLOSED SYSTEMS AND METHODS OF MAKING AND USING

#4
20250372679
2025-12-04

APPARATUS FOR VEHICLE CONTROL AND METHOD THEREOF

#5
20250349871
2025-11-13

FUEL CELL SYSTEM

#6
20250343252
2025-11-06

CONDENSATE WATER DRAIN CONTROL SYSTEM AND CONTROL METHOD FOR FUEL CELL

#7
20250329760
2025-10-23

FUEL CELL SYSTEM AND METHOD FOR STARTING A FUEL CELL SYSTEM

#8
20250329759
2025-10-23

METHOD FOR DIAGNOSING SEALING STATE OF FUEL CELL AND FUEL CELL SYSTEM

#9
20250300207
2025-09-25

FUEL CELL SYSTEM

#10
20250192204
2025-06-12

FUEL CELL SYSTEM DUST DETECTION AND EXHAUST

#11
20250174686
2025-05-29

SYSTEMS AND METHODS FOR IN SITU CALIBRATION OF FUEL CELL SENSOR

#12
20250132359
2025-04-24

HYDROGEN PURGE SYSTEM AND METHOD FOR CONTROLLING THE SAME

#13
20250070323
2025-02-27

METAL-AIR BATTERY SYSTEM

#14
20250030023
2025-01-23

FUEL CELL SYSTEM AND METHOD FOR OPERATING A FUEL CELL SYSTEM

#15
20250015324
2025-01-09

FUEL CELL SYSTEM

#16
20240222666
2024-07-04

FUEL CELL HYDROGEN MODULE

#17
20240063411
2024-02-22

Hydrogen-producing fuel cell systems and methods of operating the same

#18
20240055632
2024-02-15

Device and Method for Checking the Inertization State of a Fuel Provision System

#19
20240039020
2024-02-01

FUEL CELL SYSTEM AND METHOD OF CONTROLLING SAME

#20
20240021854
2024-01-18

HYDROGEN SUPPLY SYSTEM FOR FUEL CELL AND CONTROL METHOD THEREOF

#21
20230327149
2023-10-12

Fuel cell with protection from pressure imbalance

#22
20230268524
2023-08-24

HUMIDIFIER FOR FUEL CELL

#23
20230261222
2023-08-17

METHOD FOR CHECKING AT LEAST ONE SENSOR WITHIN THE ANODE PATH OF A FUEL CELL SYSTEM

#24
20230246210
2023-08-03

SYSTEMS AND METHODS TO OPTIMIZE A FUEL RECIRCULATION LOOP IN A FUEL CELL STACK

#25
20230170502
2023-06-01

PURGE SYSTEMS AND METHODS IN A FUEL CELL SYSTEM

#26
20230142846
2023-05-11

FLOW CHANNELS FOR OPTIMAL OR IMPROVED DELIVERY OF FLUID TO POROUS ELECTROCHEMICAL / CHEMICAL MEDIA

#27
20230118048
2023-04-20

Fuel cell hydrogen module

#28
20230077327
2023-03-16

SYSTEMS AND METHODS TO MEASURE OR CONTROL FUEL CELL STACK EXCESS HYDROGEN FLOW USING EJECTOR MIXING STATE

#29
20230023222
2023-01-26

BOIL-OFF GAS TREATMENT SYSTEM AND METHOD FOR FUEL CELL ELECTRIC VEHICLE

#30
20220399554
2022-12-15

Fuel cell control system for vehicles

#31
20220359892
2022-11-10

FUEL CELL SYSTEM AND METHOD FOR PURGING A FUEL CELL SYSTEM

#32
20220278344
2022-09-01

Fuel cell system and method for adjusting a fuel cell system

#33
20220190370
2022-06-16

Fuel cell system

#34
20220069324
2022-03-03

Energy system and method for line pressure monitoring

#35
20220037688
2022-02-03

Fuel cell mount apparatus

#36
20210399318
2021-12-23

SYSTEM FOR REBALANCING A PRESSURE DIFFERENTIAL IN A FUEL CELL USING GAS INJECTION

#37
20210344023
2021-11-04

Method for controlling a fuel cell

#38
20210265647
2021-08-26

Method of inspection for erroneous assembly of fuel cell stacks

#39
20210175524
2021-06-10

Fuel cell with protection from pressure imbalance

#40
20210143458
2021-05-13

Fuel cell system and method for detecting abnormality of fuel cell system

#41
20210119233
2021-04-22

Method for detecting a leak in an energy converter system

#42
20210091397
2021-03-25

Apparatus for controlling driving of fuel cell vehicle and method thereof

#43
20210083310
2021-03-18

Regeneration of flow battery

#44
20210075036
2021-03-11

Fuel cell system

#45
20210036352
2021-02-04

Electrochemical cell and method of using same

#46
20200168932
2020-05-28

Method of equalizing the pressure drop of fuel cell columns

#47
20200161682
2020-05-21

Pressure control system and control method of fuel cell stack

#48
20200161671
2020-05-21

FUEL CELL SYSTEM CONTAINING HUMIDITY SENSOR AND METHOD OF OPERATING THEREOF

#49
20200136158
2020-04-30

CONDENSATE WATER DRAIN CONTROL SYSTEM AND CONTROL METHOD FOR FUEL CELL

#50
20200119378
2020-04-16

Fuel cell hydrogen supply fault diagnosis system and method

#51
20200058947
2020-02-20

FUEL CELL SYSTEM FOR AN AIRCRAFT

#52
20190334186
2019-10-31

Method for determining the sealing tightness of a fuel cell stack

#53
20190288310
2019-09-19

Method and system for estimating hydrogen concentration of fuel cell

#54
20190260049
2019-08-22

Fuel cell system and method of controlling fuel cell system

#55
20190260048
2019-08-22

Fuel cell system and control method of fuel cell system

#56
20190237785
2019-08-01

Fuel cell system

#57
20190229355
2019-07-25

Method and apparatus for controlling water flooding failure in fuel cell dual-stack system

#58
20190165405
2019-05-30

Systems, devices, and methods employing electrochemical processing with oxygen as carrier gas

#59
20190067715
2019-02-28

Method and system for controlling hydrogen purging of fuel cell

#60
20190036139
2019-01-31

Fuel cell system and control device

#61
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

#62
20190006688
2019-01-03

Hydrogen supply method for fuel cell system

#63
20180375129
2018-12-27

Fuel cell system with anode degradation reduction control

#64
20180366749
2018-12-20

Method for controlling fuel cell system and fuel cell system

#65
20180358640
2018-12-13

Fuel cell system and control method for fuel cell system

#66
20180351184
2018-12-06

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

#67
20180309144
2018-10-25

Method for controlling air flow in a fuel cell power system

#68
20180287172
2018-10-04

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

#69
20180269504
2018-09-20

Fuel cell system and control method therefor

#70
20180241052
2018-08-23

Valve unit

#71
20180034078
2018-02-01

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

#72
20170352899
2017-12-07

Fuel cell system with cathode bypass valve and control method for fuel cell system

#73
20170069923
2017-03-09

Fuel cell ventilation systems

#74
20170062850
2017-03-02

Anode-cathode supply device

#75
20170040626
2017-02-09

Use of neural network and EIS signal analysis to quantify H2 crossover in-situ in operating PEM cells

#76
20160336608
2016-11-17

Method for operating fuel cell system

#77
20160197366
2016-07-07

Systems and methods for detecting leaks in a fuel cell system

#78
20160133975
2016-05-12

Fuel cell system

#79
20160133962
2016-05-12

Fuel cell system and vehicle equipped with fuel cell

#80
20160126570
2016-05-05

Combined power generation system and unit, method, and program for controlling the same

#81
20160013500
2016-01-14

Method and apparatus for detecting defects of fuel cell membrane-electrode assembly

#82
20150244009
2015-08-27

Back-up fuel cell electric generator comprising a compact manifold body, and methods of managing the operation thereof

#83
20150221966
2015-08-06

Manufacturing method of fuel cell, fuel cell and fuel cell system

#84
20150162629
2015-06-11

Fuel cell system

#85
20150030956
2015-01-29

Cell stack device, fuel cell module, fuel cell device, and method of fabricating cell stack device

#86
20150004511
2015-01-01

Method for controlling air flow in a fuel cell power system

#87
20140212779
2014-07-31

Method for controlling fuel cell system

#88
20140154603
2014-06-05

Fuel cell apparatus and fuel cell system

#89
20130323618
2013-12-05

Pressure-regulating device for a system of fuel-cell stacks

#90
20130034782
2013-02-07

Fuel Cell System and Method of Operating the fuel Cell System

#91
20130014729
2013-01-17

Fuel supply control device and fuel supply system

#92
20120276460
2012-11-01

Fuel cell system and method of stopping fuel cell system

#93
20120270127
2012-10-25

Method for detecting the permeability state of the ion exchanger polymer membrane of a fuel cell

#94
20120202131
2012-08-09

Fuel cell system and control method for fuel cell system

#95
20120189935
2012-07-26

FUEL CELL SYSTEM AND METHOD FOR OPERATING FUEL CELL SYSTEM

#96
20120135326
2012-05-31

Back-up fuel cell electric generator comprising a compact manifold body, and methods of managing the operation thereof

#97
20120070757
2012-03-22

Fuel cell vehicle

#98
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

#99
20110183223
2011-07-28

Fuel cell system and method of controlling fuel cell system

#100
20110143230
2011-06-16

Fuel cell system

#101
20110123885
2011-05-26

Fuel cell system and gas control method

#102
20110059382
2011-03-10

Anode loop pressure control in PEM fuel cell system

#103
20110045374
2011-02-24

FUEL CELL SYSTEM

#104
20100304263
2010-12-02

Valve having valve element displaced by at least one of a movement of a diaphragm and a movement of an actuator, and fuel cell using the valve

#105
20100190079
2010-07-29

Method and algorithm to detect frozen anode pressure sensor

#106
20100167143
2010-07-01

Fuel cell system, and control method for fuel cell

#107
20100136440
2010-06-03

FUEL CELL APPARATUS AND FUEL CELL SYSTEM

#108
20100112383
2010-05-06

Diagnostic to determine a valve/line freeze-up or failure in a fuel cell bleed manifold unit

#109
20100095589
2010-04-22

REFORMER HAVING A CATALYTIC DEVICE AND A HEAT EXCHANGER AND METHOD FOR OPERATING A REFORMER

#110
20100047646
2010-02-25

Fuel cell system and fuel cell vehicle

#111
20100047643
2010-02-25

FUEL CELL SYSTEM

#112
20100028726
2010-02-04

Method for supplying fuel gas to a gas chamber of a fuel cell and fuel cell

#113
20090325012
2009-12-31

ALKALINE FUEL CELL SYSTEM

#114
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

#115
20090239105
2009-09-24

Fuel battery system, method for detecting gas leakage in such system, and mobile object

#116
20090117417
2009-05-07

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

#117
20090110971
2009-04-30

Method of stopping a solid polymer type fuel cell system

#118
20090104478
2009-04-23

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

#119
20090047564
2009-02-19

Electrical Power Consuming Installation Using a Fuel Cell and Method of Supplying One Such Installation

#120
20090011299
2009-01-08

Fuel cell system for repressing reservoir water backflow

#121
20080311433
2008-12-18

Fuel Cell System and Method for Determining Deterioration of Impurity Removal Member

#122
20080220303
2008-09-11

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

#123
20080187791
2008-08-07

Fuel cell system and scavenging method therefor

#124
20080166611
2008-07-10

Fuel cell system with control of the pressure of the reactants within the system

#125
20080160360
2008-07-03

Fuel cell purge cycle apparatus and method

#126
20080145720
2008-06-19

Online detection of stack crossover rate for adaptive hydrogen bleed strategy

#127
20080145714
2008-06-19

Fuel Cell System and Related Method

#128
20080118793
2008-05-22

Fluid flow pulsing for increased stability in PEM fuel cell

#129
20080038608
2008-02-14

Fuel cell system and method for controlling same

#130
20080038593
2008-02-14

Fuel cell system with pressure regulator and method for driving same

#131
20070292726
2007-12-20

Fuel Cell System And Method For Inspecting Gas Leakage Of Same

#132
20070196709
2007-08-23

Fuel cell system and control method of same

#133
20070172714
2007-07-26

Fuel cell power generating apparatus

#134
20070160879
2007-07-12

Methods for controlling fluid delivery in a micro fuel cell system

#135
20070116992
2007-05-24

Anode loop pressure control in PEM fuel cell system

#136
20070111062
2007-05-17

Fuel cell device capable of outputting a signal representing a residual capacity, method for outputting a signal representing a residual capacity of a fuel cell device, and electronic device capable of detecting a residual capacity of a fuel cell device

#137
20070077472
2007-04-05

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

#138
20070026276
2007-02-01

Fuel cell system and control method of fuel cell system

#139
20070026269
2007-02-01

Relief valve, method of manufacturing relief valve, and fuel cell

#140
20060280976
2006-12-14

Fuel cell system

#141
20060263665
2006-11-23

Fuel cell apparatus and methods

#142
20060263655
2006-11-23

Fuel cell apparatus and methods

#143
20060210849
2006-09-21

Fuel cell system and gas control method

#144
20060029848
2006-02-09

Method and system for controlling fluid delivery in a fuel cell

#145
20060019136
2006-01-26

Fuel cell stack temperature control system and method

#146
20060008689
2006-01-12

Fuel cell system

#147
20050263393
2005-12-01

System and method of performing electrochemical tests of solid oxide fuel cells

#148
20050260463
2005-11-24

Fluid flow pulsing for increased stability in PEM fuel cell

#149
20050221147
2005-10-06

Valve having valve element displaced by at least one of a movement of a diaphragm and a movement of an actuator, and fuel cell using the valve

#150
20050208358
2005-09-22

Solid polymer type fuel cell system for power generation

#151
20050175872
2005-08-11

Fuel cell flooding detection

#152
20050136301
2005-06-23

Monitoring fuel cells using RFID devices

#153
20050118475
2005-06-02

Reaction gas supply apparatus and method for fuel cell