ClassID:

213518

H01M8/04708 - 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; Temperature of fuel cell reactants

Recent Application in this class:
#1
20260142210
2026-05-21

FUEL CELL PLATE

#2
20260135130
2026-05-14

FUEL CELL SYSTEM INCLUDING SILICON SPECIES TRAPPING MATERIAL OR SILICON SPECIES TOLERANT CATALYST AND METHOD OF OPERATING THEREOF

#3
20260128332
2026-05-07

METHOD AND SYSTEM FOR CONTROLLING WATER BALANCE IN METAL-AIR ELECTROCHEMICAL CELLS

#4
20260106188
2026-04-16

GAS SUPPLY APPARATUS

#5
20260094850
2026-04-02

PEM FUEL CELL STACK

#6
20260091708
2026-04-02

COORDINATED OPTIMIZATION METHOD AND SYSTEM FOR HYDROGEN FUEL CELL VEHICLE, DEVICE, AND MEDIUM

#7
20260066320
2026-03-05

METHOD FOR GENERATING POWER OR PRODUCING HYDROGEN AND ENERGY CONVERSION SYSTEM

#8
20260058177
2026-02-26

SYSTEMS AND METHODS FOR FUEL CELL CATHODE EXHAUST HUMIDITY CONTROL

#9
20250372668
2025-12-04

FUEL CELL SYSTEM FOR GENERATING ELECTRICAL ENERGY

#10
20250316734
2025-10-09

FUEL CELL SYSTEM AND METHOD FOR CONTROLLING THE SAME

#11
20250316725
2025-10-09

Fuel Cell Air Recirculation System and Control Method

#12
20250260029
2025-08-14

FUEL CELL SYSTEM

#13
20250239635
2025-07-24

FUEL CELL SYSTEM

#14
20250192202
2025-06-12

Electrochemical Reactor, Electrochemical Reactor Systems, Processes for Electrochemical Reactions, and Methods Using Same

#15
20250140885
2025-05-01

SYSTEMS AND METHODS FOR EFFICIENT ELECTRICAL GENERATION FROM LIQUID FUELS

#16
20250140881
2025-05-01

FUEL CELL SYSTEM, AND TANK SYSTEM FOR A FUEL CELL SYSTEM

#17
20250115167
2025-04-10

WORK VEHICLE, WORK VEHICLE CONTROL DEVICE, AND CONTROL METHOD

#18
20250070196
2025-02-27

TESTING APPARATUS AND TESTING SYSTEM FOR FUEL CELL STACK

#19
20250038238
2025-01-30

TUNABLE REDOX FLOW BATTERY

#20
20250038237
2025-01-30

MIXED MEDIA DESULFURIZATION SYSTEMS AND FUEL CELL SYSTEMS INCLUDING THE SAME

#21
20250038227
2025-01-30

FUEL CELL SYSTEM GLOW PLUG

#22
20250030023
2025-01-23

FUEL CELL SYSTEM AND METHOD FOR OPERATING A FUEL CELL SYSTEM

#23
20250006963
2025-01-02

METHOD OF OPERATING A FUEL CELL SYSTEM IN FUEL CELL MODE

#24
20240363875
2024-10-31

POWER GENERATION SYSTEM

#25
20240359904
2024-10-31

HYDROGEN TEMPERATURE CONTROLLING SYSTEM, REFRIGERATED CONTAINING DEVICE, AND DIVISIONAL TEMPERATURE CONTROLLING METHOD FOR THE REFRIGERATED CONTAINING DEVICE

#26
20240290997
2024-08-29

SYSTEMS AND METHODS FOR REDUCING COSTS AND PARASITIC LOADS WHEN USING AN EJECTOR WITH A FUEL CELL

#27
20240274853
2024-08-15

INTEGRATED ELECTROLYTE REBALANCING WITH FLOW BATTERY POWER MODULES

#28
20240266578
2024-08-08

Fuel cell system

#29
20240258543
2024-08-01

INTEGRATED NOISE ATTENUATING VOLUME FOR FUEL CELL SYSTEM

#30
20240234759
2024-07-11

METHOD FOR CONTROLLING A DRYING PROCESS OF A FUEL CELL SYSTEM

#31
20240213581
2024-06-27

Fuel cell-battery system and control method thereof

#32
20240194910
2024-06-13

FUEL CELL SYSTEM AND HYDROGEN TANK TEMPERATURE CONTROLLING METHOD THEREOF

#33
20240128483
2024-04-18

HYDROGEN RECIRCULATION PUMP HEATING AND SEALING ASSEMBLIES AND METHODS

#34
20240105978
2024-03-28

FUEL CELL SYSTEM AND METHOD OF CONTROLLING SAME

#35
20240047725
2024-02-08

FUEL CELL MODULE ASSEMBLY AND SYSTEMS USING SAME

#36
20230387433
2023-11-30

Controlling PEMFC stack flooding

#37
20230335763
2023-10-19

Fuel cell temperature control

#38
20230299322
2023-09-21

FUEL CELL SYSTEM

#39
20230253582
2023-08-10

HEAT INSULATION STRUCTURE FOR HIGH-TEMPERATURE REACTION ROOM

#40
20230234714
2023-07-27

Systems and method of operating a fuel cell assembly

#41
20230159324
2023-05-25

HYDROGEN RELEASE/STORAGE SYSTEM, HYDROGEN RELEASE/STORAGE METHOD, AMMONIA PRODUCTION EQUIPMENT, GAS TURBINE, FUEL CELL, AND STEEL MILL

#42
20230138892
2023-05-04

Relight of a propulsion system with a fuel cell

#43
20230030199
2023-02-02

Air supply system and air supply method for fuel cell

#44
20230028759
2023-01-26

Reversible fuel cell system architecture

#45
20220407092
2022-12-22

Fuel cell system with a combined fuel evaporation and cathode gas heater unit and its method of operation

#46
20220328853
2022-10-13

METHOD AND DEVICE FOR DETECTING INTERNAL CARBON DEPOSITION OF A SOLID OXIDE FUEL CELL SYSTEM

#47
20220320553
2022-10-06

Method of determining degradation of fuel cell stack, and fuel cell vehicle equipped with the fuel cell stack

#48
20220181721
2022-06-09

Fuel cell-battery system and control method thereof

#49
20220178498
2022-06-09

POWER SUPPLY

#50
20220169149
2022-06-02

Fuel cell system

#51
20220059856
2022-02-24

Fuel cell system containing water injector and method of operating the same

#52
20220052362
2022-02-17

FUEL CELL ACTIVATION METHOD AND APPARATUS

#53
20220052359
2022-02-17

Fuel cell system

#54
20220045344
2022-02-10

SOLID OXIDE FUEL CELL WITH WATER RECYCLE

#55
20210376351
2021-12-02

Method for temperature control of a solid oxide electrochemical system having integrated heating means

#56
20210376350
2021-12-02

Fuel cell system

#57
20210367246
2021-11-25

Fuel cell system

#58
20210362620
2021-11-25

Fuel cell system

#59
20210336283
2021-10-28

Fuel cell system

#60
20210313607
2021-10-07

Fuel cell system and method

#61
20210265645
2021-08-26

Power management server, power management system, and power management method

#62
20210262662
2021-08-26

Control method for a catalytic combustion apparatus and a catalytic combustion system

#63
20210218040
2021-07-15

High-efficiency heat exchanger for temperature control system of fuel cell and processing device thereof

#64
20210194022
2021-06-24

Fuel cell system and purge method therefor

#65
20210167407
2021-06-03

Regulation of a controlled variable of a conditioning unit of a reactant of a fuel cell with ascertainment of an actual value of the controlled variable

#66
20210159534
2021-05-27

Fuel cell module assembly and systems using same

#67
20210143459
2021-05-13

Fuel cell system

#68
20210135255
2021-05-06

Freight vehicle

#69
20210131348
2021-05-06

Plant and plant operation method

#70
20210075041
2021-03-11

Fuel cell temperature distribution control system, fuel cell, and temperature distribution control method

#71
20210005909
2021-01-07

PORTABLE DEVICE FOR PRODUCING HYDROGEN, AND USE THEREOF

#72
20200388862
2020-12-10

Fuel cell system and fuel cell system warm-up method

#73
20200365916
2020-11-19

Fuel cell system and method for warming up fuel cell system

#74
20200295388
2020-09-17

METHOD FOR QUICKLY HEATING A FUEL CELL SYSTEM

#75
20200274175
2020-08-27

Fuel cell system and fuel cell vehicle

#76
20200266460
2020-08-20

Fuel cell system and fuel cell system control method

#77
20200243885
2020-07-30

Fuel cell system containing water injector and method of operating the same

#78
20200243881
2020-07-30

Fuel cell arrangement having a vortex tube, fuel cell system and vehicle having a fuel cell arrangement

#79
20200220184
2020-07-09

Power supply system and control method therefor

#80
20200168935
2020-05-28

Solid oxide fuel cell system configured for higher hydrocarbon fuels

#81
20200112037
2020-04-09

System and method for heat exchange between gaseous fuel tank and heat transfer medium

#82
20200099076
2020-03-26

FUEL CELL SYSTEM INCLUDING SULFUR OXIDATION SUBSYSTEM AND METHOD OF OPERATING THE SAME

#83
20200091529
2020-03-19

Fuel cell system

#84
20200075971
2020-03-05

Fuel cell secondary power and thermal management systems

#85
20200028190
2020-01-23

High efficiency solid oxide fuel cell—internal combustion engine hybrid power system

#86
20200020963
2020-01-16

Integrated fuel cell systems

#87
20190393520
2019-12-26

Thermal management system for fuel cell vehicle

#88
20190379073
2019-12-12

Fuel cell system

#89
20190359355
2019-11-28

Advanced cooling for cryogenic powered vehicles

#90
20190356009
2019-11-21

FUEL CELL SYSTEM

#91
20190356002
2019-11-21

EXTERNAL MIXER-EDUCTOR-OXIDIZER AND MODULE CONNECTIONS THEREOF

#92
20190312288
2019-10-10

Fuel cell system

#93
20190245226
2019-08-08

Methods for transitioning a fuel cell system between modes of operation

#94
20190245225
2019-08-08

Methods for transitioning a fuel cell system between modes of operation

#95
20190245223
2019-08-08

Controlled gas conditioning for a reaction gas of a fuel cell

#96
20190245221
2019-08-08

Methods for transitioning a fuel cell system between modes of operation

#97
20190245220
2019-08-08

Methods for Transitioning a Fuel Cell System between Modes of Operation

#98
20190221876
2019-07-18

Moving body

#99
20190221864
2019-07-18

Electrochemical cells with improved fluid flow design

#100
20190214660
2019-07-11

Fuel cell system including inductive heating element and method of using same

#101
20190161870
2019-05-30

Systems, devices, and methods employing electrochemical processing of hydrofluoroolefins

#102
20190148748
2019-05-16

System and method for fuel cell stack temperature control

#103
20190148743
2019-05-16

FUEL CELL SYSTEM INCLUDING HEAT EXCHANGER USING BURNER OFF-GAS

#104
20190137571
2019-05-09

Fuel cell stack prediction utilizing IHOS

#105
20190115604
2019-04-18

Fuel cell module

#106
20190081335
2019-03-14

Cooling and humidifying device and fuel cell system having the same

#107
20190081334
2019-03-14

Internal light off mechanism for solid oxide fuel cell system startup using a spark ignitor

#108
20190036132
2019-01-31

FUEL CELL SYSTEM

#109
20180287172
2018-10-04

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

#110
20180233753
2018-08-16

Thermal management system for fuel cell vehicle

#111
20180226667
2018-08-09

METHOD FOR OPERATING A FUEL CELL SYSTEM AND ADJUSTING A RELATIVE HUMIDITY OF A CATHODE OPERATING GAS DURING A HEATING PHASE

#112
20180226659
2018-08-09

FUEL CELL WITH THERMAL ENERGY STORAGE FOR FLEXIBILITY IN HYBRIDS

#113
20180131018
2018-05-10

SOFC system and method which maintain a reducing anode environment

#114
20180108922
2018-04-19

Fuel cell system and method of running fuel cell system

#115
20180076472
2018-03-15

Integrated fuel cell systems

#116
20180048003
2018-02-15

Fuel cell system and control method for fuel cell system

#117
20170317365
2017-11-02

METHOD FOR OPERATING A FUEL CELL SYSTEM

#118
20170288240
2017-10-05

Fuel cell power generation module

#119
20170250415
2017-08-31

Method for controlling fuel cell system

#120
20170214069
2017-07-27

Fuel cell system and control method for fuel cell system

#121
20170200965
2017-07-13

Electrolyte-circulating battery

#122
20170133698
2017-05-11

Method of decontaminating a fuel reactant stream for a fuel cell

#123
20170069925
2017-03-09

Temperature measuring method

#124
20170062888
2017-03-02

Metal air battery having thermal management structure

#125
20170051685
2017-02-23

Engine systems and methods of operating an engine

#126
20170047597
2017-02-16

Fuel cell cogeneration system, method of starting operation of the fuel cell cogeneration system, and method of operating the fuel cell cogeneration system

#127
20160380477
2016-12-29

Alternating current uninterruptible power supply system

#128
20160293983
2016-10-06

Operation control method and system of fuel cell

#129
20160149247
2016-05-26

Fuel cell system

#130
20160141692
2016-05-19

Fuel cell stack and steam reformer systems and methods

#131
20160049671
2016-02-18

Fuel cell system and control method therefor

#132
20150303499
2015-10-22

Solid oxide fuel cell power plant with an anode recycle loop turbocharger

#133
20150244005
2015-08-27

Alternative path cooling of a high temperature fuel cell

#134
20150221997
2015-08-06

Temperature control system for a high-temperature battery or a high-temperature electrolyzer

#135
20150221961
2015-08-06

Fuel cell system and control method thereof

#136
20150050576
2015-02-19

FUEL CELL SYSTEM AND METHOD OF CONTROLLING CONCENTRATION OF FUEL

#137
20150024294
2015-01-22

FUEL CELL DEVICE AND METHOD FOR OPERATING A FUEL CELL DEVICE

#138
20150017559
2015-01-15

System and method for cooling an aircraft fuel cell system

#139
20150004510
2015-01-01

High temperature steam electrolysis facility (HTSE) with allothermal hydrogen production

#140
20150004504
2015-01-01

Integrated gas management device for a fuel cell system

#141
20150004503
2015-01-01

FUEL CELL SYSTEM

#142
20140342259
2014-11-20

Fuel cell system

#143
20140329156
2014-11-06

Heated ejector assembly for a fuel cell

#144
20140186733
2014-07-03

FUEL CELL SYSTEM WITH ANODE RECYCLING

#145
20140186729
2014-07-03

High temperature fuel cell system with integrated heat exchanger network

#146
20130337354
2013-12-19

Power generation system and method of operating the same

#147
20130302708
2013-11-14

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

#148
20130260266
2013-10-03

Fast MEA break-in and voltage recovery

#149
20130244126
2013-09-19

HIGH-TEMPERATURE OPERATING FUEL CELL MODULE, AND HIGH-TEMPERATURE OPERATING FUEL CELL SYSTEM

#150
20130183600
2013-07-18

FUEL CELL DEVICE

#151
20130171533
2013-07-04

Method and arrangement to control operating conditions in fuel cell device

#152
20130149625
2013-06-13

Fuel cell system

#153
20130149618
2013-06-13

Fuel cell system

#154
20130022888
2013-01-24

Fuel cell cooling system with coupling out of heat

#155
20120178008
2012-07-12

Fuel cell system and method of controlling reaction condition of fuel in fuel cell

#156
20120064422
2012-03-15

Fuel cell system and control method thereof

#157
20120034536
2012-02-09

Fluidized bed contaminant separator and water-control loop for a fuel reactant stream of a fuel cell

#158
20110294024
2011-12-01

Humidification Unit for Providing a Carrier Gas Containing a Fuel, and Fuel Cell with Such a Humidification Unit

#159
20110223500
2011-09-15

MCFC POWER GENERATION SYSTEM AND METHOD FOR OPERATING SAME

#160
20110177404
2011-07-21

FUEL CARTRIDGE OF FUEL CELL AND METHOD FOR OPERATING FUEL CARTRIDGE

#161
20110129746
2011-06-02

Thermal management system for high-temperature fuel cell

#162
20110077839
2011-03-31

System and method to operate a fuel cell in the exhaust of an internal combustion engine

#163
20110059376
2011-03-10

Method for generating a gas which may be used for startup and shutdown of a fuel cell

#164
20110045367
2011-02-24

Fuel Cell Supply System, Fuel Cell System and Method of Operating the Same

#165
20110045366
2011-02-24

Fuel cell system

#166
20100304260
2010-12-02

Fuel cell system and method of controlling fuel cell system

#167
20100285379
2010-11-11

Transitioning an electrochemical cell stack between a power producing mode and a pumping mode

#168
20100190082
2010-07-29

Fuel cell with air channel actuator

#169
20100124678
2010-05-20

Fuel cell feed systems

#170
20100104908
2010-04-29

Fuel cell system and operating method thereof

#171
20100035095
2010-02-11

Fuel cell system

#172
20100015483
2010-01-21

Reaction gas temperature and humidity regulating module for fuel cell stack

#173
20100003562
2010-01-07

FUEL CELL SYSTEM WITH DEVICE FOR CATHODE INLET AIR PREHEATING

#174
20090274934
2009-11-05

Fuel cell system and starting method therefor

#175
20090263680
2009-10-22

Alternative path cooling of a high temperature fuel cell

#176
20090258261
2009-10-15

Fuel cell system and method of controlling the same

#177
20090253007
2009-10-08

Method and apparatus for anode oxidation prevention and cooling of a solid-oxide fuel cell stack

#178
20090130497
2009-05-21

Fuel cell system and starting method therefor

#179
20090075127
2009-03-19

METHOD FOR MEASURING HIGH-FREQUENCY RESISTANCE OF FUEL CELL IN A VEHICLE

#180
20090061270
2009-03-05

Fuel cell system and method of operating the fuel cell system

#181
20090004514
2009-01-01

Method of selecting non-humidification operation condition of proton exchange membrane fuel cell

#182
20080280171
2008-11-13

Hydrogen Generation Device, Operation Method Thereof, and Fuel Cell System

#183
20080226956
2008-09-18

Cold start compressor control and mechanization in a fuel cell system

#184
20080152965
2008-06-26

Technique and apparatus to determine an initial reactant stoichiometric ratio for a fuel cell system

#185
20080081238
2008-04-03

Water transfer efficiency improvement in a membrane humidifier by reducing dry air inlet temperature

#186
20080026273
2008-01-31

Fuel cell system and control method therefor

#187
20070281193
2007-12-06

Multiple pressure regime control to minimize RH excursions during transients

#188
20070269694
2007-11-22

Temperature zones in a solid oxide fuel cell auxiliary power unit

#189
20070259227
2007-11-08

Fuel cell system and control method therefor

#190
20070243428
2007-10-18

Method of commencing operation of an electrochemical fuel cell stack from freeze-start conditions

#191
20070190377
2007-08-16

System and method to operate a fuel cell in the exhaust of an internal combustion engine

#192
20070178367
2007-08-02

Direct oxidation fuel cell and method for operating direct oxidation fuel cell system

#193
20070154755
2007-07-05

Apparatus for measuring an electrical characteristic of an electrochemical device

#194
20070104989
2007-05-10

Apparatus and method for heat exchange of liquid fuel type fuel cell system

#195
20070099045
2007-05-03

FUEL CELL DEVICE CAPABLE OF ADJUSTING OPERATIONAL PARAMETERS

#196
20070059566
2007-03-15

Warm-up apparatus for fuel cell

#197
20070026278
2007-02-01

Fuel cell system and charge amount adjustment method for energy storage

#198
20070006530
2007-01-11

Hydrogen generating device and method

#199
20060263653
2006-11-23

Management via dynamic water holdup estimator in a fuel cell

#200
20060263652
2006-11-23

Fuel cell system relative humidity control

#201
20060251939
2006-11-09

High temperature fuel cell system with integrated heat exchanger network

#202
20060251933
2006-11-09

Arrangement and method for the generation of water on board an aircraft

#203
20060199051
2006-09-07

Combined heat and power system

#204
20060166058
2006-07-27

Fuel cell system ensuring stability of operation

#205
20060134480
2006-06-22

A SENSOR ASSEMBLY FOR MEASURING HUMIDITY, PRESSURE AND TEMPERATURE

#206
20060127713
2006-06-15

Temperature zones in a solid oxide fuel cell auxiliary power unit

#207
20060099469
2006-05-11

Control apparatus to improve start-up time in a PEM fuel cell power module

#208
20060093881
2006-05-04

Fuel-cell evaluation equipment

#209
20050252281
2005-11-17

System and method for treating process fluids delivered to an electrochemical cell stack

#210
20050211842
2005-09-29

Arrangement and method for the generation of water on board an aircraft

#211
20050158610
2005-07-21

Reversing air flow across a cathode for a fuel cell

#212
20050079395
2005-04-14

Integrated fuel cell hybrid power plant with controlled oxidant flow for combustion of spent fuel

#213
20050079393
2005-04-14

Method and system for controlling constant temperature for fuel cells

#214
20050077364
2005-04-14

Temperature/humidity control system for a fuel cell stack and a method thereof

#215
20050075816
2005-04-07

System and method for controlling a fuel cell testing device

#216
18055081
2023-10-10

Fuel cell system including air inlet baffle and method of operating thereof

#217
17075451
2022-11-08

Power management system and method of operating the same

#218
16893850
2023-08-29

Thermal management of a solid oxide fuel cell system

#219
15440534
2021-01-12

Power management system utilizing metastable hydrogen carrier and method of operating the same

#220
13567162
2015-07-14

Solid oxide fuel cell power plant with an anode recycle loop turbocharger