ClassID:

213651

H01M8/222 - CPC Classification

Classification description:

Fuel cells; Manufacture thereof; Fuel cells in which the fuel is based on materials comprising carbon or oxygen or hydrogen and other elements; Fuel cells in which the fuel is based on materials comprising only elements other than carbon, oxygen or hydrogen Fuel cells in which the fuel is based on compounds containing nitrogen, e.g. hydrazine, ammonia

Recent Application in this class:
#1
20260074250
2026-03-12

CORROSION-RESISTANT SYSTEM, CARBON-FREE POWER GENERATION SYSTEM, AND FUEL CELL SYSTEM

#2
20260018639
2026-01-15

ARTIFICIAL PHOTOSYNTHESIS ENERGY SYSTEMS AND METHODS

#3
20260011764
2026-01-08

SOFC FOR THE COMBINED PRODUCTION OF ELECTRICITY AND NITRIC OXIDE

#4
20260009160
2026-01-08

METHODS OF MANUFACTURE OF TEMPLATES WITH IrNi NANOBRANCHES (NBS), IrNiCu@Cu NANOSTRUCTURES AND ELECTROCATALYSTS COMPRISING IrNiCu@Cu NANOSTRUCTURES, AND APPLICATIONS THEREOF

#5
20250372673
2025-12-04

FUEL CELL POWER GENERATION SYSTEM AND CONTROL METHOD THEREOF

#6
20250030029
2025-01-23

APPARATUS FOR CONTROLLING AMMONIA FUEL CELL VEHICLE AND METHOD FOR CONTROLLING THE SAME

#7
20240379984
2024-11-14

FUEL CELL SYSTEM AND AIRCRAFT HAVING AN INERTING SYSTEM

#8
20240332571
2024-10-03

Ammonia-based solid oxide fuel cell (SOFC) system in which temperature rise using heating element is applied, and operation method therefor

#9
20240297326
2024-09-05

ENERGY PRODUCTION SYSTEM

#10
20240291011
2024-08-29

HIGH SOLUBILITY IRON HEXACYANIDES

#11
20240266576
2024-08-08

FUEL CELL SYSTEM AND CONTROL METHOD THEREOF

#12
20240247380
2024-07-25

HYDROGEN PRODUCTION SYSTEM USING AMMONIA AND FUEL CELL USING AMMONIA

#13
20240228272
2024-07-11

SYSTEMS AND METHODS FOR PROCESSING AMMONIA

#14
20240145751
2024-05-02

CHLORINE DIOXIDE-BASED ENERGY STORAGE

#15
20240132347
2024-04-25

SYSTEMS AND METHODS FOR PROCESSING AMMONIA

#16
20240132346
2024-04-25

SYSTEMS AND METHODS FOR PROCESSING AMMONIA

#17
20240113313
2024-04-04

APPARATUS AND METHOD FOR DETERMINING STATE OF CHARGE IN A REDOX FLOW BATTERY VIA LIMITING CURRENTS

#18
20240030478
2024-01-25

METHOD AND SYSTEM FOR CONTROLLING OPERATION OF FUEL CELL

#19
20240014414
2024-01-11

FUEL CELL SYSTEM

#20
20230378507
2023-11-23

METHOD FOR OPERATING AN SOFC FOR THE COMBINED PRODUCTION OF ELECTRICITY AND NITRIC OXIDE

#21
20230299324
2023-09-21

ANION EXCHANGE POLYMERS AND ANION EXCHANGE MEMBRANES FOR DIRECT AMMONIA FUEL CELLS

#22
20230275245
2023-08-31

Thermal management of fuel cell units and systems

#23
20220255107
2022-08-11

High solubility iron hexacyanides

#24
20220158202
2022-05-19

Ammonia fuel cell

#25
20220085393
2022-03-17

Thermal management of fuel cell units and systems

#26
20220006110
2022-01-06

Direct ammonia-fed solid oxide fuel cell and methods for making the same

#27
20210320315
2021-10-14

Anion exchange polymers and anion exchange membranes for direct ammonia fuel cells

#28
20210305613
2021-09-30

Direct ammonia alkaline membrane fuel cell and method of operating same

#29
20210126268
2021-04-29

Hydrogen filling system

#30
20210111421
2021-04-15

Fuel cell architectures, aftertreatment systems, and control logic for exhaust water extraction

#31
20200381751
2020-12-03

Apparatus and method for determining state of charge in a redox flow battery via limiting currents

#32
20200373603
2020-11-26

Unique redox-active phenothiazine combinations with depressed melting points for increased solubility and method of use in energy storage and in redox flow batteries

#33
20200347780
2020-11-05

Turbomachine, in particular for a fuel cell system, fuel cell system, method for operating a turbomachine, and method for operating a fuel cell system

#34
20200339453
2020-10-29

Bioelectrochemical method and apparatus for energy reclamation from nitrogen compounds

#35
20200335811
2020-10-22

Method and system for controlling operation of fuel cell

#36
20200325586
2020-10-15

Electrode for gas generation, method of preparing the electrode and device including the electrode for gas generation

#37
20200099084
2020-03-26

Fuel cell system and method for operating the same, and electrochemical system and method for operating the same

#38
20200006797
2020-01-02

FUEL CELL SYSTEM

#39
20190363388
2019-11-28

High solubility iron hexacyanides

#40
20190288314
2019-09-19

Control method and control system of hydrogen concentration for fuel cell

#41
20190260014
2019-08-22

Nitrogen battery, fuel synthesizing apparatus, and fuel synthesizing method

#42
20190207235
2019-07-04

Method of controlling hydrogen partial pressure for fuel cell system

#43
20190173116
2019-06-06

MEMBRANELESS DIRECT-TYPE FUEL CELLS

#44
20190140291
2019-05-09

Fuel cell system and method of controlling the same

#45
20190092645
2019-03-28

Ammonia production method

#46
20190027771
2019-01-24

ACID GAS REGENERABLE BATTERY

#47
20190006688
2019-01-03

Hydrogen supply method for fuel cell system

#48
20180342739
2018-11-29

Electrochemical cell and process

#49
20180301720
2018-10-18

Arrangement for a cathode recirculation in a fuel cell and method for cathode recirculation

#50
20170309944
2017-10-26

High solubility iron hexacyanides

#51
20170253620
2017-09-07

Processes for forming coordination complexes containing monosulfonated catecholate ligands

#52
20170250433
2017-08-31

Ammonia-based thermoelectrochemical systems and methods

#53
20170155164
2017-06-01

Liquid phenothiazine catholytes for non-aqueous redox flow batteries

#54
20170062852
2017-03-02

Thermal management of fuel cell units and systems

#55
20160344031
2016-11-24

Organic active materials for rechargeable battery

#56
20160293979
2016-10-06

Apparatus and method for determining state of charge in a redox flow battery via limiting currents

#57
20160276697
2016-09-22

High solubility iron hexacyanides

#58
20160276696
2016-09-22

High solubility iron hexacyanides

#59
20160276692
2016-09-22

High solubility iron hexacyanides

#60
20160276686
2016-09-22

Electrochemical energy storage systems and methods featuring optimal membrane systems

#61
20160194767
2016-07-07

Electrolytic cell for the production of ammonia

#62
20160167962
2016-06-16

Ammonia oxidation/decomposition catalyst

#63
20150357668
2015-12-10

Fuel cell

#64
20150288002
2015-10-08

Nanodevices for generating power from molecules and batteryless sensing

#65
20150252949
2015-09-10

SYSTEM FOR STORING AMMONIA IN AND RELEASING AMMONIA FROM A STORAGE MATERIAL AND METHOD FOR STORING AND RELEASING AMMONIA

#66
20150155587
2015-06-04

Method for operating a fuel cell system

#67
20150105244
2015-04-16

Electrode material and its applications in direct fuel cell and electrochemical hydrogenation electrolytic tank

#68
20150093656
2015-04-02

Liquid nitrogen battery

#69
20150086727
2015-03-26

PREPARING METHOD OF CATALYST FOR FUEL CELL AND PREPARING METHOD OF MEMBRANE ELECTRODE ASSEMBLY

#70
20150017089
2015-01-15

Method for nitrogen recovery from an ammonium comprising fluid and bio-electrochemical system

#71
20140322629
2014-10-30

NITRATE REDUCTION METHOD, NITRATE REDUCTION CATALYST, NITRATE REDUCTION ELECTRODE, FUEL CELL, AND WATER TREATMENT APPARATUS

#72
20140186728
2014-07-03

Use of ammonia as source of hydrogen fuel and as a getter for air-CO2 in alkaline membrane fuel cells

#73
20140072889
2014-03-13

Ammonia fueled SOFC system

#74
20140065499
2014-03-06

Ammonia or hydrazine injection into fuel cell systems

#75
20140051003
2014-02-20

High solubility iron hexacyanides

#76
20140030631
2014-01-30

Electrochemical energy storage systems and methods featuring optimal membrane systems

#77
20130260280
2013-10-03

Gas decomposition component, method for producing gas decomposition component, and power generation apparatus

#78
20130230747
2013-09-05

Direct liquid fuel cell having ammonia borane, hydrazine, derivatives thereof or/and mixtures thereof as fuel

#79
20130224612
2013-08-29

Gas decomposition component, power generation apparatus, and method for decomposing gas

#80
20130089810
2013-04-11

GAS DECOMPOSITION COMPONENT, AMMONIA DECOMPOSITION COMPONENT, POWER GENERATION APPARATUS, AND ELECTROCHEMICAL REACTION APPARATUS

#81
20120325682
2012-12-27

Layered electrocatalyst for oxidation of ammonia and ethanol

#82
20120301814
2012-11-29

ELECTRICALLY DRIVEN AIRCRAFT

#83
20120288774
2012-11-15

System for storing ammonia in and releasing ammonia from a storage material and method for storing and releasing ammonia

#84
20120258344
2012-10-11

Rapidly rechargeable battery

#85
20120237853
2012-09-20

Nanodevices for generating power from molecules and batteryless sensing

#86
20120202128
2012-08-09

Solid electrolyte including layered metal oxide, fuel cell including thereof, production method for solid electrolyte, and production method for electrode catalyst

#87
20120189923
2012-07-26

Method for the production of electrical energy from ammonium

#88
20120156582
2012-06-21

FUEL CELL

#89
20120122006
2012-05-17

Power generation system using an alkaline fuel cell and fuel gas for alkaline fuel cells used in the system

#90
20120068471
2012-03-22

ENERGY CONVERSION SYSTEM

#91
20120015281
2012-01-19

FUEL CELL

#92
20110236782
2011-09-29

FUEL CELL SYSTEM

#93
20110206961
2011-08-25

Rapidly rechargeable battery

#94
20110171555
2011-07-14

Mixed reactant flow-by fuel cell

#95
20110053022
2011-03-03

Direct liquid fuel cell having hydrazine or derivatives thereof as fuel

#96
20110039176
2011-02-17

Direct liquid fuel cell having ammonia borane or derivatives thereof as fuel

#97
20100323255
2010-12-23

FUEL CELL SYSTEM SUITABLE FOR COMPLEX FUELS AND A METHOD OF OPERATION OF THE SAME

#98
20100252422
2010-10-07

CARBON FIBER-ELECTROCATALYSTS FOR THE OXIDATION OF AMMONIA AND ETHANOL IN ALKALINE MEDIA AND THEIR APPLICATION TO HYDROGEN PRODUCTION, FUEL CELLS, AND PURIFICATION PROCESSES

#99
20100233583
2010-09-16

Fuel cell system

#100
20100221643
2010-09-02

Hydrazine fixing detection system

#101
20100151356
2010-06-17

Fuel cell and method for generating electric power

#102
20100092826
2010-04-15

FUEL CELL AND FUEL CELL SYSTEM

#103
20100086467
2010-04-08

Release of stored ammonia at start-up

#104
20100062296
2010-03-11

Method and device for ammonia storage and delivery using in situ re-saturation of a delivery unit

#105
20100055520
2010-03-04

Solid oxide fuel cell tube with internal fuel processing

#106
20100055509
2010-03-04

Inorganic salt mixtures as electrolyte media in fuel cells

#107
20100050615
2010-03-04

Efficient Release of Ammonia from a Solid Ammonia Storage Medium

#108
20100047638
2010-02-25

Method and device for safe storage and use of volatile ammonia storage materials

#109
20100021780
2010-01-28

System for Storing Ammonia In and Releasing Ammonia from a Stroage Material and Method for Storing and Releasing Ammonia

#110
20100004461
2010-01-07

Compounds containing organofluorochlorophosphate anions

#111
20090317670
2009-12-24

Hydrazine supply device, fuel cell system utilizing the same, vehicle carrying the fuel cell system, and method of supplying hydrazine

#112
20090257940
2009-10-15

ENERGY CONVERSION SYSTEM

#113
20090127094
2009-05-21

Electro-catalysts for the oxidation of ammonia in alkaline media

#114
20090081500
2009-03-26

FUEL CELL UTILIZING AMMONIA, ETHANOL OR COMBINATIONS THEREOF

#115
20090023036
2009-01-22

Liquid-liquid fuel cell systems having flow-through anodes and flow-by cathodes

#116
20080318097
2008-12-25

Electrochemical cell for oxidation of ammonia and ethanol

#117
20080314755
2008-12-25

Layered electrocatalyst for oxidation of ammonia and ethanol

#118
20080311460
2008-12-18

Fuel cartridge

#119
20080286165
2008-11-20

Guanidine Based Composition and System for Same

#120
20080248353
2008-10-09

Energy conversion device including a solid oxide fuel cell fueled by ammonia

#121
20080145733
2008-06-19

Fuel Cell

#122
20080095689
2008-04-24

Apparatus and method for in situ production of fuel for a fuel cell

#123
20080066376
2008-03-20

Catalytic liquid fuel

#124
20080050630
2008-02-28

Membrane-Electrode Assemblies for Fuel Cell, Their Manufacture and Use and Fuel Cells Incorporating Them

#125
20080026267
2008-01-31

Fuel mixture, fuel reliquefying system, fuel cartridge using the same, and method of extracting fuel; for fuel cells

#126
20070218339
2007-09-20

LEAK-PROOF LIQUID FUEL CELL

#127
20070099062
2007-05-03

Fuel cell system suitable for complex fuels and a method of operation of the same

#128
20050266281
2005-12-01

Apparatus and method for in situ production of fuel for a fuel cell

#129
20050211569
2005-09-29

Electro-catalysts for the oxidation of ammonia in alkaline media

#130
20050112452
2005-05-26

Solid oxide fuel cell tube with internal fuel processing

#131
20050106430
2005-05-19

Hydrogen supply device and fuel-cell system

#132
20050095465
2005-05-05

Fuel cell

#133
19233988
2026-05-12

Electrocatalytic method for hydrogen production

#134
18066163
2024-01-09

Systems and methods for processing ammonia

#135
18065915
2023-10-24

Systems and methods for processing ammonia

#136
15423763
2019-12-31

Supported Ni-M materials for electrooxidation of hydrazine

#137
14525928
2017-03-21

Supported Ni—M materials for electrooxidation of hydrazine

#138
13721063
2016-01-05

Nitric acid regeneration fuel cell systems

#139
13721055
2015-08-18

Nitric acid regeneration fuel cell systems