ClassID:

213501

H01M8/04582 - 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; Electric variables; Current of the individual fuel cell

Recent Application in this class:
#1
20260155410
2026-06-04

FUEL CELL SYSTEM

#2
20260066316
2026-03-05

METHOD FOR CONTROLLING ANODE PURGE VALVE OF FUEL CELL, DEVICE, MEDIUM, AND PRODUCT

#3
20260038857
2026-02-05

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

#4
20260027300
2026-01-29

MEDICAL DEVICE AND MEDICAL SYSTEM USING SAID MEDICAL DEVICE

#5
20250300205
2025-09-25

REGENERATIVE FUEL CELL SYSTEM

#6
20250253372
2025-08-07

METHODS AND SYSTEMS FOR OPTIMIZING LIFETIME OF FUEL CELL SYSTEM BASED ON ADJUSTMENT AND CONSTRAINT OF THERMOELECTRIC RATIO

#7
20250174689
2025-05-29

HYDROGEN CONSUMPTION SYSTEM

#8
20250149603
2025-05-08

METHOD OF CONTROLLING OPERATION OF FUEL CELL TRIPLE COGENERATION SYSTEM

#9
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

#10
20250030015
2025-01-23

DETERMINATION METHOD AND FUEL CELL SYSTEM

#11
20240313241
2024-09-19

FUEL CELL SYSTEM

#12
20240282992
2024-08-22

METHOD FOR REGENERATING A FUEL CELL

#13
20240222666
2024-07-04

FUEL CELL HYDROGEN MODULE

#14
20240186541
2024-06-06

METHOD AND SYSEM FOR HUMIDIFYING AN AIR SUPPLY OF A FUEL CELL FOR AIRCRAFT

#15
20240055632
2024-02-15

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

#16
20240030469
2024-01-25

ANODE POISON REDUCTION SYSTEM AND METHOD FOR FUEL CELL VEHICLE

#17
20240021856
2024-01-18

SYSTEMS AND METHODS OF USING AN ENERGY STORAGE DEVICE TO ASSIST AN EJECTOR

#18
20230402659
2023-12-14

BATTERY CONTROL SYSTEM AND METHOD OF FUEL CELL VEHICLE

#19
20230369617
2023-11-16

ENVIRONMENTAL CONTROL SYSTEM HAVING A FUEL CELL ASSEMBLY

#20
20230352711
2023-11-02

SYSTEM FOR SUPPLYING HYDROGEN AND METHOD FOR CONTROLLING THE SAME

#21
20230261218
2023-08-17

CATHODE CIRCULATION SYSTEM OF FUEL CELL AND ITS CONTROL METHOD

#22
20230261217
2023-08-17

ANODE RECOVERY SYSTEM OF FUEL CELL

#23
20230216072
2023-07-06

System and method for determining state of charge for an electric energy storage device

#24
20230170506
2023-06-01

SYSTEM AND METHOD FOR CONTROLLING POWER FOR FUEL CELL

#25
20230155147
2023-05-18

FUEL CELL SYSTEM AND METHOD FOR CONTROLLING THE SAME

#26
20230125311
2023-04-27

METHOD AND DEVICE FOR CONTROLLING DETERIORATION AVOIDANCE OPERATION OF FUEL CELL SYSTEM

#27
20230118048
2023-04-20

Fuel cell hydrogen module

#28
20220416279
2022-12-29

FUEL CELL SYSTEM

#29
20220416269
2022-12-29

Systems and methods of using an energy storage device to assist an ejector

#30
20220416264
2022-12-29

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

#31
20220384835
2022-12-01

Fuel Cell Array and Fuel Cell Inspection Method

#32
20220352533
2022-11-03

System and method for operating fuel cell

#33
20220293974
2022-09-15

Fuel cell system

#34
20220255097
2022-08-11

SELF-POWERED SYSTEM AND METHOD FOR POWER EXTRACTION AND MEASUREMENT OF ENERGY-GENERATOR UNITS

#35
20220246964
2022-08-04

Fuel cell system

#36
20220223891
2022-07-14

Fuel cell system

#37
20220200026
2022-06-23

OUTPUT VOLTAGE PREDICTION SYSTEM AND PREDICTION METHOD FOR FUEL CELL

#38
20220149400
2022-05-12

Device and method for online impedance spectrum measurement of vehicle-mounted hydrogen fuel cell

#39
20220085396
2022-03-17

Flow battery module

#40
20220069323
2022-03-03

METHOD AND APPARATUS FOR ASSESSING THE SUITABILITY OF A FUEL FOR USE IN A FUEL CELL

#41
20210376354
2021-12-02

Fuel cell system

#42
20210202975
2021-07-01

Fuel cell device and systems enabling cell-level repair

#43
20210184235
2021-06-17

Method for calculating voltage loss of fuel cell and system performing the same

#44
20210135261
2021-05-06

Fuel cell system

#45
20210119233
2021-04-22

Method for detecting a leak in an energy converter system

#46
20210075039
2021-03-11

System and method for determining state of charge for an electric energy storage device

#47
20210013530
2021-01-14

Method of predicting life of membrane electrode assembly of fuel cell for electric power generation

#48
20200408843
2020-12-31

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

#49
20200403256
2020-12-24

Fuel cell system

#50
20200403254
2020-12-24

METHOD AND DEVICE FOR FORECASTING SERVICE LIFE AND REMAINING LIFE OF FUEL CELL

#51
20200321637
2020-10-08

Fuel cell system

#52
20200235412
2020-07-23

Fuel cell system and refrigerant flow rate estimation method for the same

#53
20200215932
2020-07-09

Fuel cell vehicle and method for controlling the same

#54
20200203739
2020-06-25

Fuel cell system

#55
20200176793
2020-06-04

Regeneration of molten carbonate fuel cells for deep COcapture

#56
20200144642
2020-05-07

Hydrogen supply control system and control method for fuel cell

#57
20200144641
2020-05-07

System and method for determining state of charge for an electric energy storage device

#58
20190393526
2019-12-26

CLOSED LOOP CONTROL FOR FUEL CELL WATER MANAGEMENT

#59
20190296379
2019-09-26

Method for inspecting current leak of fuel cell

#60
20190273276
2019-09-05

Method and controller for operating power cells using multiple layers of control

#61
20190148750
2019-05-16

Method for calculating voltage loss of fuel cell and system performing the same

#62
20190049522
2019-02-14

Method for determining critical operating states in a fuel cell stack

#63
20190049521
2019-02-14

Method for determining critical operating states in a fuel cell stack

#64
20190020045
2019-01-17

REDOX FLOW BATTERY AND METHOD OF MEASURING STATE OF CHARGE THEREOF

#65
20180325429
2018-11-15

Method for transdermal measurement of volatile anesthetics

#66
20180323456
2018-11-08

Electrochemical cell and method of operation

#67
20180254499
2018-09-06

Fuel cell with oxygen adsorber and method of using the same

#68
20180251409
2018-09-06

High efficiency fuel cell

#69
20180248210
2018-08-30

Fuel cell system and fuel cell control method

#70
20180166717
2018-06-14

Method and apparatus for estimating hydrogen crossover loss of fuel cell system

#71
20180159158
2018-06-07

Fuel cell system

#72
20180151892
2018-05-31

Bipolar plate structure having optimized gas flow channels

#73
20180148851
2018-05-31

System and method for tuning an electrochemical cell stack

#74
20180148850
2018-05-31

System and method for tuning an electrochemical cell stack

#75
20180131024
2018-05-10

Apparatus for cleaning catalyst of a power cell

#76
20180048006
2018-02-15

Fuel cell internal state detection system and state detection method

#77
20180013162
2018-01-11

Microbial fuel cell, method of controlling and measuring the redox potential difference of the fuel cell

#78
20170373331
2017-12-28

STATE DETECTION DEVICE AND METHOD FOR FUEL CELL

#79
20170352904
2017-12-07

Fuel cell assembly and associated method of operation

#80
20170346117
2017-11-30

Fuel cell system and method of shutting down the same

#81
20170310142
2017-10-26

Fuel cell system

#82
20170214071
2017-07-27

Fuel cell unit and vehicle having fuel cell unit

#83
20170207470
2017-07-20

Electrochemical cell and method of operation

#84
20170104231
2017-04-13

Fuel cell system and performance improvement method of fuel cell system

#85
20170059663
2017-03-02

Diagnostic device

#86
20160380290
2016-12-29

Fuel cell system

#87
20160359187
2016-12-08

CELL MODULE

#88
20160351928
2016-12-01

Fuel cell system and control method for fuel cell system

#89
20160218382
2016-07-28

Non-invasive measurement method for controlling the functioning of a membrane fuel cell

#90
20160156049
2016-06-02

Method and apparatus for controlling fuel concentration of liquid fuel cell by sensor-less and voltage amplitude-control based feed-back control, and liquid fuel cell apparatus using the same

#91
20160144738
2016-05-26

System and method for power distribution of fuel cell hybrid vehicle

#92
20160133975
2016-05-12

Fuel cell system

#93
20160126574
2016-05-05

Fuel cell system and maximum power calculation method

#94
20160116541
2016-04-28

Fuel cell inspection method and manufacturing method

#95
20160107952
2016-04-21

High efficiency fuel cell

#96
20150244013
2015-08-27

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

#97
20150153418
2015-06-04

Method for determining critical operating states in a fuel cell stack

#98
20150140458
2015-05-21

Method and apparatus for cleaning catalyst of a power cell

#99
20150134277
2015-05-14

Method for checking the gas tightness of a fuel cell system

#100
20150024298
2015-01-22

System and method for tuning an electrochemical cell stack

#101
20150010837
2015-01-08

Fuel Cell System

#102
20140370414
2014-12-18

Internally controllable fuel cell

#103
20140295302
2014-10-02

Fuel cell monitoring device

#104
20140272653
2014-09-18

Flow Battery System and Method of SOC Determination

#105
20140239962
2014-08-28

FUEL CELL INSPECTION METHOD AND INSPECTION DEVICE

#106
20140162158
2014-06-12

Fuel cell bypass diode structures and attachment methods

#107
20140072834
2014-03-13

Power cell and power chip architecture

#108
20140030621
2014-01-30

Methods of operating fuel cells

#109
20130288147
2013-10-31

Method and regulation apparatus for regulating a fuel cell or a fuel cell stack

#110
20130103224
2013-04-25

Method for sequentially measuring impedance, measurement device, and fuel cell system

#111
20130093456
2013-04-18

Testing device for solid oxide fuel cell

#112
20130004870
2013-01-03

Fuel cell system and method for controlling electric current of same

#113
20120321976
2012-12-20

Controlling fuel cell

#114
20120315509
2012-12-13

Fuel cell bypass diode structures and attachment methods

#115
20120276466
2012-11-01

In-vehicle algorithm for fuel cell stack health quantification

#116
20120231356
2012-09-13

Fuel cell system controller

#117
20120191385
2012-07-26

METHOD FOR DETERMINING DETERIORATION OF FUEL CELL

#118
20120162842
2012-06-28

Shunt system for cells in a fuel cell stack

#119
20120145564
2012-06-14

Fuel cell evaluator and fuel cell evaluation method

#120
20120141897
2012-06-07

Start-up method for fuel cell

#121
20120045705
2012-02-23

FUEL CELL SYSTEM

#122
20110311890
2011-12-22

Open type fuel cell system with unreacted material removing function

#123
20110269039
2011-11-03

Apparatus and method for controlling variable power conditions in a fuel cell

#124
20110250520
2011-10-13

VARIABLE LOAD FUEL CELL

#125
20110229783
2011-09-22

Adaptive loading of a fuel cell

#126
20110151347
2011-06-23

Fuel cell system and fuel cell status detection method

#127
20110143244
2011-06-16

Start-up method for fuel cell

#128
20110104580
2011-05-05

Fuel cell system

#129
20110086284
2011-04-14

Method to reduce time until acceptable drive away in a fuel cell system

#130
20110076581
2011-03-31

Stack operation method aimed at cell reversal prevention

#131
20110076574
2011-03-31

Fuel cell system controller

#132
20110033760
2011-02-10

Micro gap flow through electrochemical devices with self adjusting reactive surfaces

#133
20110003220
2011-01-06

METHOD AND APPARATUS FOR THE DISCONNECTION OF A FUEL CELL

#134
20100316920
2010-12-16

Electrochemical energy generating apparatus and operating method thereof, and electrochemical device

#135
20100304260
2010-12-02

Fuel cell system and method of controlling fuel cell system

#136
20100297520
2010-11-25

ELECTROCHEMICAL ENERGY CONVERSION SYSTEM

#137
20100273074
2010-10-28

Fuel cell system and method for operating a fuel cell system

#138
20100248055
2010-09-30

Fuel cell system and method for limiting current thereof

#139
20100173211
2010-07-08

Fuel cell system and fuel cell power managing method

#140
20100159295
2010-06-24

ON-LINE REPLACEMENT OF DCFC TUBULAR ELEMENTS

#141
20100151341
2010-06-17

Fuel cell system

#142
20100151340
2010-06-17

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

#143
20100136447
2010-06-03

Fuel cell system

#144
20100112401
2010-05-06

Fuel cell system, electrode catalyst degradation judgment method, and moving body

#145
20100003549
2010-01-07

Fuel cell, fuel cell system, and control method of fuel cell system

#146
20090321265
2009-12-31

Methods for controlling catalytic processes, including the deposition of carbon based particles

#147
20090274937
2009-11-05

FUEL CELL SYSTEM WITH CIRCUIT MODULES

#148
20090274935
2009-11-05

Fuel Cell System Designed to Ensure Stability of Operation

#149
20090263683
2009-10-22

Method and device for improving the service life of a fuel cell at transitions in operation

#150
20090258257
2009-10-15

Fuel cell system having wet-state determination

#151
20090214765
2009-08-27

Fuel Cell Anode Structures For Voltage Reversal Tolerance

#152
20090197155
2009-08-06

Online low performing cell (LPC) prediction and detection of fuel cell system

#153
20090197125
2009-08-06

Method for maximum net power calculation for fuel cell system based on online polarization curve estimation

#154
20090130508
2009-05-21

Fuel cell system

#155
20090087702
2009-04-02

Fuel cell system

#156
20090068506
2009-03-12

DEVICE AND METHOD FOR MONITORING INTERNAL STATE OF FUEL CELL

#157
20080318089
2008-12-25

Fast locally resolved electrochemical impedance spectroscopy in polymer electrolyte fuel cells

#158
20080292920
2008-11-27

Methods of operating fuel cells

#159
20080176116
2008-07-24

Start-up method for fuel cell

#160
20080070075
2008-03-20

FUEL CELL SYSTEM

#161
20080042654
2008-02-21

Fuel cell diagnostic apparatus and diagnostic method

#162
20080032163
2008-02-07

Preventing corrosion during start up and shut down of a fuel cell

#163
20070287043
2007-12-13

Method and apparatus for controlling an array of power generators

#164
20070248848
2007-10-25

Power cell and power chip architecture

#165
20070227900
2007-10-04

PERFORMANCE ENHANCEMENT VIA WATER MANAGEMENT IN ELECTROCHEMICAL CELLS

#166
20070178343
2007-08-02

Fuel cell system and operating method thereof

#167
20070176762
2007-08-02

Fuel efficiency display device for fuel cell vehicle, and fuel efficiency displaying method for fuel cell vehicle

#168
20070148506
2007-06-28

METHOD OF CALCULATING FUEL CONCENTRATION IN A LIQUID FUEL CELL

#169
20070138005
2007-06-21

Electrochemical testing device

#170
20070116994
2007-05-24

Methods of operating fuel cells

#171
20060166058
2006-07-27

Fuel cell system ensuring stability of operation

#172
20060166052
2006-07-27

Accelerated testing method of rapidly evaluating lifespan of fuel cell

#173
20060141308
2006-06-29

Apparatus and method for variable conductance temperature control

#174
20060134473
2006-06-22

Methods for operating a fuel cell system under reduced load conditions

#175
20060110636
2006-05-25

Methods of operating fuel cells

#176
20060068237
2006-03-30

Integrated current sensors for a fuel cell stack

#177
20060029838
2006-02-09

Method of establishing connections between measuring electronics and fuel cell stack

#178
20060024551
2006-02-02

Array fuel cell reactors with a switching system

#179
20060024536
2006-02-02

Fuel cell system

#180
20050260471
2005-11-24

Electrical current measurement in a fuel cell

#181
20050208349
2005-09-22

Method for detecting undersupply of fuel gas and method for controlling fuel cell

#182
20050130021
2005-06-16

Fuel cell and power chip technology

#183
20050112419
2005-05-26

Controlling solid oxide fuel cell operation

#184
20050106426
2005-05-19

Method of monitoring a fuel cell unit

#185
20050068002
2005-03-31

Cell unit and power supply control method

#186
20050064251
2005-03-24

Electrochemical probe for screening multiple-cell arrays

#187
20050060876
2005-03-24

Fuel cell and power chip technology

#188
19046499
2025-08-05

Methods and systems for optimizing lifetime of fuel cell system based on adjustment and constraint of thermoelectric ratio

#189
16283454
2021-11-02

Method of controlling rate of hydrogen release from metastable hydrogen carriers

#190
15440370
2019-05-21

Method of controlling rate of hydrogen release from metastable hydrogen carriers