ClassID:

213446

H01M8/04171 - CPC Classification

Classification description:

Fuel cells; Manufacture thereof; Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids; Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal using adsorbents, wicks or hydrophilic material

Recent Application in this class:
#1
20260081188
2026-03-19

SEPARATOR USED IN FUEL CELL, AND FUEL CELL

#2
20260074252
2026-03-12

SYSTEMS AND METHODS FOR CAPTURING CARBON DIOXIDE USING A MOLTEN CARBONATE FUEL CELL

#3
20250309293
2025-10-02

ENERGY GENERATION SYSTEM

#4
20240387842
2024-11-21

POWER-GENERATING ELEMENT, POWER-GENERATING APPARATUS, AND POWER-GENERATING METHOD

#5
20240356050
2024-10-24

WATER RECOVERY SYSTEM FOR FUEL CELLS

#6
20240332569
2024-10-03

ELECTROCHEMICAL CELL HUMIDITY STABILIZATION SYSTEM

#7
20230299316
2023-09-21

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

#8
20230118977
2023-04-20

Membrane electrode assembly for redox flow battery applications

#9
20230077343
2023-03-16

Water recovery system for fuel cells

#10
20220407097
2022-12-22

System and method for increasing the efficiency for a solid oxide fuel cell system

#11
20220352531
2022-11-03

Method for operating a fuel cell system, and fuel cell system

#12
20220311024
2022-09-29

Water electrolysis and electricity generating system

#13
20220278348
2022-09-01

Fuel cell stack

#14
20220231308
2022-07-21

WET SPRAYED COATINGS FOR INTERCONNECTS FOR SOEC AND SOFC

#15
20220140354
2022-05-05

FUEL CELL ELECTRODE WITH CATALYSTS GROWN IN SITU ON ORDERED STRUCTURE MICROPOROUS LAYER AND METHOD FOR PREPARING MEMBRANE ELECTRODE ASSEMBLY

#16
20200388864
2020-12-10

Vehicle having a fuel cell system, and method for treating a fluid emerging from the fuel cell system

#17
20200147514
2020-05-14

Atmospheric water generator for extracting water droplets from ambient air

#18
20200014045
2020-01-09

System and method for increasing the efficiency for a solid oxide fuel cell system

#19
20190280318
2019-09-12

WATER RECAPTURE/RECYCLE SYSTEM IN ELECTROCHEMICAL CELLS

#20
20190165389
2019-05-30

WATER MANAGEMENT SYSTEM IN ELECTROCHEMICAL CELLS WITH VAPOR RETURN COMPRISING AIR ELECTRODES

#21
20190123363
2019-04-25

Via designs for removing water in fuel cell stacks

#22
20180269508
2018-09-20

Membrane electrode assembly

#23
20180248212
2018-08-30

FUEL CELL FOR OPTIMISING AIR HUMIDIFICATION

#24
20170350216
2017-12-07

Downhole power supply device

#25
20170309926
2017-10-26

Fuel cell and motor vehicle

#26
20170263950
2017-09-14

Proton exchange membrane fuel cell with stepped channel bipolar plate

#27
20170233878
2017-08-17

Electrochemical hydrogen pump

#28
20170179505
2017-06-22

Humidifier with an integrated water separator for a fuel cell system, fuel cell system including a humidifier, and vehicle including same

#29
20170117600
2017-04-27

Electrochemical battery maintaining oxygen concentration by air recirculation

#30
20170033379
2017-02-02

Metal-air battery, vehicle system comprising the metal-air battery, and method of operating the metal-air battery

#31
20170012333
2017-01-12

Electrochemical battery and method of operating the same

#32
20160293978
2016-10-06

Water management system in electrochemical cells with vapor return comprising air electrodes

#33
20160087293
2016-03-24

Ventilation apparatus and control method thereof

#34
20160043411
2016-02-11

Fuel cell having perforated flow field

#35
20160013509
2016-01-14

Fuel cell stack and fuel cell system

#36
20150288003
2015-10-08

Isolating water transport plates from elastomer seals

#37
20150221963
2015-08-06

Method for forming channels on diffusion media for a membrane humidifier

#38
20150147664
2015-05-28

Method of operating a fuel cell in confined space

#39
20150086895
2015-03-26

Fuel cell

#40
20140356739
2014-12-04

Polymer electrolyte fuel cell with a recess is formed downstream of a gas lead-out port

#41
20140227615
2014-08-14

Water recapture/recycle system in electrochemical cells

#42
20140162152
2014-06-12

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

#43
20140087277
2014-03-27

Wicking layer for managing moisture distribution in a fuel cell

#44
20130330643
2013-12-12

Fuel-cell stack comprising an anode chamber comprising in the anode chamber an area for condensing and removing water and method for condensing and removing water formed in said chamber

#45
20130316075
2013-11-28

Method of preparing cathode for fuel having two kinds of water-repellency

#46
20130056080
2013-03-07

Adjustable air flow bypass in a water vapor transfer assembly to reduce beginning of life water transfer variation

#47
20130034798
2013-02-07

Fuel cell water management arrangement

#48
20130004875
2013-01-03

GAS-LIQUID SEPARATOR AND FUEL CELL SYSTEM HAVING THE SAME

#49
20120321989
2012-12-20

Membrane/electrode assembly for polymer electrolyte fuel cell and process for producing cathode for polymer electrolyte fuel cell

#50
20120178014
2012-07-12

Reaction layer for fuel cell

#51
20120148926
2012-06-14

FUEL CELL DEHUMIDIFICATION SYSTEM AND METHOD

#52
20120141914
2012-06-07

Gas Diffusion Layer Member For Solid Polymer Fuel Cells, and Solid Polymer Fuel Cell

#53
20120135324
2012-05-31

DEVICE FOR REMOVING GENERATED WATER

#54
20120135323
2012-05-31

LOW-TEMPERATURE FUEL CELL HAVING AN INTEGRATED WATER MANAGEMENT SYSTEM FOR PASSIVELY DISCHARGING PRODUCT WATER

#55
20120111967
2012-05-10

Hollow-fiber membrane module for moisture exchange

#56
20120070752
2012-03-22

Method for forming channels on diffusion media for a membrane humidifier

#57
20120021309
2012-01-26

FUEL CELL SYSTEM

#58
20120009490
2012-01-12

Ring of fuel cells with a hydrogen generator

#59
20110223497
2011-09-15

FUEL CELL

#60
20110183238
2011-07-28

Fuel cell

#61
20110171564
2011-07-14

Reversible superhydrophilic-superhydrophobic coating for fuel cell bipolar plates and method of making the same

#62
20110159399
2011-06-30

POWER GENERATION CELL FOR FUEL BATTERY

#63
20110159383
2011-06-30

SOLID POLYMER ELECTROLYTE FUEL CELL

#64
20110151352
2011-06-23

Gas diffusion layer

#65
20110151349
2011-06-23

DOUBLE-ELECTROLYTE FUEL-CELL

#66
20110143221
2011-06-16

Method of chemical treatment of fuel cell plate surface to modify wettability of flow field channels

#67
20110129747
2011-06-02

Fuel cell device having a liquid soak up region

#68
20110117465
2011-05-19

FUEL CELL

#69
20110104582
2011-05-05

TAILORING LIQUID WATER PERMEABILITY OF DIFFUSION LAYERS IN FUEL CELL STACKS

#70
20110091779
2011-04-21

PEM fuel cell stack inlet water regulation system

#71
20110076590
2011-03-31

BIPOLAR PLATE FOR FUEL CELL AND FUEL CELL

#72
20110059381
2011-03-10

Fuel cell system

#73
20110053011
2011-03-03

PEM fuel cell stack inlet water regulation system

#74
20110024295
2011-02-03

Electrochemical cell

#75
20110003225
2011-01-06

RECHARGING VALVE FOR A FUEL CELL

#76
20110003217
2011-01-06

WICKING LAYER FOR MANAGING MOISTURE DISTRIBUTION IN A FUEL CELL

#77
20110003216
2011-01-06

FUEL CELL AND FUEL CELL SYSTEM

#78
20100310947
2010-12-09

System and method for managing fuel cell operating conditions in a mobile communication device

#79
20100297519
2010-11-25

Cathode for fuel cell

#80
20100297477
2010-11-25

Microbial fuel cell cathode assembly

#81
20100285386
2010-11-11

HIGH POWER FUEL STACKS USING METAL SEPARATOR PLATES

#82
20100261087
2010-10-14

Fuel cell having perforated flow field

#83
20100239958
2010-09-23

Hydrophilic/hydrophobic patterned surfaces and methods of making and using the same

#84
20100227244
2010-09-09

Membrane-electrode assembly for fuel cell and fuel cell stack with the same

#85
20100209808
2010-08-19

Fuel cell and electrode powder constituting the catalytic layer thereof

#86
20100196798
2010-08-05

FUEL CELL SYSTEM

#87
20100183954
2010-07-22

WATER MANAGEMENT IN A FUEL CELL

#88
20100173220
2010-07-08

POLYMER ELECTROLYTE FUEL CELL

#89
20100167153
2010-07-01

FUEL CELL APPARATUS

#90
20100159299
2010-06-24

Passive fuel cell assembly

#91
20100136462
2010-06-03

Conductive and hydrophilic coating for PEMFC bipolar plate

#92
20100086826
2010-04-08

Fuel cell

#93
20100081025
2010-04-01

Material design to enable high mid-temperature performance of a fuel cell with ultrathin electrodes

#94
20100077783
2010-04-01

Solid oxide fuel cell assisted air conditioning system

#95
20100068565
2010-03-18

VARIABLE FUEL PRESSURE CONTROL FOR A FUEL CELL

#96
20100055529
2010-03-04

WETTABILITY INK, PROCESS AND CARBON COMPOSITE ARTICLES MADE THEREWITH

#97
20100055508
2010-03-04

FUEL CELL SYSTEMS WITH WATER RECOVERY FROM FUEL CELL EFFLUENT

#98
20100032042
2010-02-11

Duct optimization to prevent freezing

#99
20100028730
2010-02-04

Fuel cell power production system with an integrated hydrogen utilization device

#100
20100009239
2010-01-14

Fuel cell including a liquid discharge mechanism

#101
20090325037
2009-12-31

Fuel cell fluid distribution plates

#102
20090325032
2009-12-31

Transpiration cooling and fuel cell for ultra mobile applications

#103
20090311575
2009-12-17

Fuel cell with passive operation

#104
20090305108
2009-12-10

Fuel cell device

#105
20090297907
2009-12-03

FUEL CELL SYSTEM AND ELECTRIC EQUIPMENT

#106
20090297899
2009-12-03

Housing, apparatus for generating hydrogen and fuel cell power generation system having the same

#107
20090286118
2009-11-19

Bipolar plate coating architecture for fuel cells and methods of making and using the same

#108
20090246580
2009-10-01

FUEL CELL AND FUEL CELL SYSTEM

#109
20090238989
2009-09-24

Method of coating fuel cell components for water removal

#110
20090214904
2009-08-27

Integrated Fuel and Fuel Cell Device

#111
20090208801
2009-08-20

Fuel cell system with discharged water treatment facilities

#112
20090208797
2009-08-20

Fuel cell stack humidification device

#113
20090208790
2009-08-20

FLUID RECYCLING APPARATUS AND FUEL CELL SYSTEM HAVING THE FLUID RECYCLING APPARATUS

#114
20090202876
2009-08-13

Oxygen permeable film, oxygen permeable sheet, and cell including these

#115
20090191351
2009-07-30

FUEL CELL BIPOLAR PLATE WITH VARIABLE SURFACE PROPERTIES

#116
20090162717
2009-06-25

Fuel cell including separator with gas flow channels

#117
20090162712
2009-06-25

FUEL CELL

#118
20090148747
2009-06-11

Water flow system for a fuel cell

#119
20090123807
2009-05-14

Single reactant gas flow field plate PEM fuel cell

#120
20090104498
2009-04-23

Electrode catalyst layer for use in fuel cell

#121
20090098431
2009-04-16

METHOD OF PRODUCING FUEL CELL SEPARATOR, AND FUEL CELL

#122
20090092865
2009-04-09

Fuel cell system

#123
20090075137
2009-03-19

Filter, hydrogen generator and fuel cell power generation system having the same

#124
20090071334
2009-03-19

Convenient Substance-Recovery System and Process

#125
20090068535
2009-03-12

Fuel cell bipolar plate exit for improved flow distribution and freeze compatibility

#126
20090061262
2009-03-05

Retaining water in a fuel cell stack for cooling and humidification during frozen startup

#127
20090047422
2009-02-19

Method for manufacturing tube-type fuel cell

#128
20090042090
2009-02-12

FUEL CELL

#129
20090035639
2009-02-05

Fuel cell module with a water reservoir including a water storing portion expanding from a cell unit to an anode side

#130
20090029228
2009-01-29

Separator plate and fuel cell

#131
20090029220
2009-01-29

Fuel cell

#132
20090017352
2009-01-15

FUEL CELL SYSTEM

#133
20090011310
2009-01-08

Bipolar plate with microgrooves for improved water transport

#134
20080318111
2008-12-25

FUEL CELL

#135
20080292940
2008-11-27

Hydrophilic/hydrophobic patterned surfaces and methods of making and using the same

#136
20080292939
2008-11-27

Three-dimensional hydrophilic porous structures for fuel cell plates

#137
20080292927
2008-11-27

Humidity controllable cathode end plate and air breathing fuel cell stack the same

#138
20080280188
2008-11-13

AIR-BREATHING FUEL CELL STACK

#139
20080241632
2008-10-02

Use of Hydrophilic Treatment in a Water Vapor Transfer Device

#140
20080241624
2008-10-02

FUEL CELL DEVICE

#141
20080241607
2008-10-02

Water removal system for non-reactive regions in PEFMC stacks

#142
20080233450
2008-09-25

FUEL CELL

#143
20080206612
2008-08-28

MIXING TANK FOR FUEL CELL

#144
20080199758
2008-08-21

SMALL PORTABLE FUEL CELL AND MEMBRANE ELECTRODE ASSEMBLY USED THEREIN

#145
20080187789
2008-08-07

Integrated fuel cell and heat engine hybrid system for high efficiency power generation

#146
20080176128
2008-07-24

FUEL CELL

#147
20080131745
2008-06-05

Fuel cells having a water guide element

#148
20080118809
2008-05-22

Use of a porous material in the manifolds of a fuel cell stack

#149
20080107939
2008-05-08

Fuel Cell System

#150
20080107929
2008-05-08

Fuel cell system having water-retaining material

#151
20080093006
2008-04-24

Fuel cell devices, systems, and methods

#152
20080057378
2008-03-06

Fuel Cells

#153
20080057367
2008-03-06

FUEL CELL SYSTEM

#154
20080032182
2008-02-07

Passive water management techniques in direct methanol fuel cells

#155
20080032169
2008-02-07

Heat and water management device and method in fuel cells

#156
20080020249
2008-01-24

Water Filter For An Electrochemical Fuel Cell System

#157
20070298312
2007-12-27

Membrane-electrode unit for direct methanol fuel cells (DMFC)

#158
20070284253
2007-12-13

Fuel cell water management

#159
20070269709
2007-11-22

Fuel cell and method of producing the same

#160
20070259249
2007-11-08

SEPARATOR FOR FUEL CELL

#161
20070259232
2007-11-08

Fuel cell system with discharged water treatment facilities

#162
20070259231
2007-11-08

Solid polymer electrolyte fuel cell

#163
20070231670
2007-10-04

Fuel cell stack with water removal projections at air outlets

#164
20070184312
2007-08-09

Power generator shut-off valve

#165
20070178341
2007-08-02

Gas channel coating with water-uptake related volume change for influencing gas velocity

#166
20070128478
2007-06-07

High efficiency fuel cell system

#167
20070122682
2007-05-31

Direct oxidation fuel cell

#168
20070122681
2007-05-31

Direct oxidation fuel cell

#169
20070122672
2007-05-31

Fuel cell

#170
20070117005
2007-05-24

Proton exchange membrane fuel cell and method of forming a fuel cell

#171
20070116993
2007-05-24

Water management of PEM fuel cell stacks using surface active agents

#172
20070099060
2007-05-03

Direct liquid feed fuel cell

#173
20070072049
2007-03-29

FUEL CELL AND FUEL CELL SYSTEM

#174
20070072040
2007-03-29

Fuel cell

#175
20070065708
2007-03-22

Water blocking layer and wicking reservoir for PEMFC

#176
20070059579
2007-03-15

Fuel cell system with a water holding member

#177
20070059575
2007-03-15

Fuel cell

#178
20070042242
2007-02-22

Fuel electrode of solid polymer electrolyte fuel cell

#179
20070037040
2007-02-15

Fuel cell, fuel cell power source system and electronic devices using the same

#180
20070031713
2007-02-08

High temperature fuel cell system having cooling apparatus and method of operating the same

#181
20070017367
2007-01-25

Partial pressure swing adsorption system for providing hydrogen to a vehicle fuel cell

#182
20070015035
2007-01-18

Lightweight direct methanol fuel cell

#183
20070015032
2007-01-18

Method and apparatus for water management of a fuel cell system

#184
20060292431
2006-12-28

Direct liquid feed fuel cell stack

#185
20060280976
2006-12-14

Fuel cell system

#186
20060275642
2006-12-07

Hydrophilic fuel cell bipolar plate having a plasma induced polymerization coating

#187
20060229459
2006-10-12

CRYSTALLINE BASE OF CITALOPRAM

#188
20060222924
2006-10-05

Prevention of flooding of fuel cell stack

#189
20060204816
2006-09-14

Fuel cell device and electronic appliance

#190
20060078779
2006-04-13

Draining device for use with fuel cell system

#191
20060037904
2006-02-23

Water filter for an electrochemical fuel cell system

#192
20060029855
2006-02-09

Increasing the hydrophilicity of carbon fiber paper by electropolymerization

#193
20060029839
2006-02-09

Fuel cell cartridge, fuel cell system, electrical apparatus and method for recovering water generated in fuel cell system

#194
20060024544
2006-02-02

Fuel cell housing and fuel cell assemblies

#195
20060008693
2006-01-12

Fuel cell

#196
20060008686
2006-01-12

Fuel container for fuel cell

#197
20050260469
2005-11-24

Fuel reformer system with improved water transfer

#198
20050255358
2005-11-17

Single pump fuel cell system

#199
20050247200
2005-11-10

Moisture exchange module containing a bundle of moisture-permeable hollow fiber membranes

#200
20050241482
2005-11-03

Moisture exchange module having a bundle of moisture-permeable hollow fibre membranes

#201
20050170224
2005-08-04

Controlled direct liquid injection vapor feed for a DMFC

#202
20050158593
2005-07-21

Water disposal system, method of disposing water, and power generation apparatus

#203
20050142403
2005-06-30

Fuel cell system

#204
20050064261
2005-03-24

Internal PEM fuel cell water management

#205
20050019639
2005-01-27

Fuel cell and electric apparatus

#206
20050008919
2005-01-13

Lyophilic fuel cell component