ClassID:

213508

H01M8/04634 - 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 Other electric variables, e.g. resistance or impedance

Sub-classes:
Recent Application in this class:
#1
20260005273
2026-01-01

SYSTEM AND METHOD FOR THERMALLY REGULATING A SOLID OR POLYMER ELECTROLYTE IN AN ELECTROCHEMICAL DEVICE

#2
20250385345
2025-12-18

METHOD, APPARATUS AND SYSTEM FOR CAPTURING CARBON USING FUEL CELL

#3
20250279451
2025-09-04

FUEL CELL SYSTEM

#4
20250253375
2025-08-07

METHOD FOR OPERATING A REDOX FLOW BATTERY SYSTEM

#5
20250189599
2025-06-12

HIGH-VOLTAGE COMPONENT AND METHOD OF USE THEREOF

#6
20250189597
2025-06-12

DIAGNOSIS SYSTEM AND DIAGNOSIS METHOD FOR ELECTROCHEMICAL MODULE, AND NON-TRANSITORY STORAGE MEDIUM

#7
20250125384
2025-04-17

STRUCTURE FOR INCREASING DURABILITY OF ION FILTER

#8
20250070207
2025-02-27

METHOD FOR COOLING A FUEL CELL SYSTEM AND FUEL CELL SYSTEM

#9
20240339699
2024-10-10

METHOD, APPARATUS AND SYSTEM FOR CAPTURING CARBON USING FUEL CELL

#10
20240262253
2024-08-08

ELECTRIC POWER CONTROL APPARATUS, FUEL CELL SYSTEM, VEHICLE, AND RECORDING MEDIUM

#11
20240170769
2024-05-23

Method, apparatus and system for capturing carbon using fuel cell

#12
20230282850
2023-09-07

FUEL CELL SYSTEM

#13
20230207840
2023-06-29

System and method for directly monitoring the conductivity of coolant used to regulate the temperature a fuel cell

#14
20230044324
2023-02-09

INSULATION FAULT RESPONSE METHOD AND APPARATUS FOR FUEL CELL VEHICLE

#15
20220388406
2022-12-08

Supply device, fuel cell vehicle, and method for limiting voltage in a supply device

#16
20210376365
2021-12-02

Direct isopropanol fuel cell

#17
20210257633
2021-08-19

Power supply device having a fuel cell device and a battery, fuel cell vehicle, and method for starting a power supply device

#18
20210104762
2021-04-08

Coolant control system and control method of fuel cell

#19
20210075042
2021-03-11

REDOX FLOW BATTERY AND METHOD OF OPERATION

#20
20210020966
2021-01-21

Fuel cell system

#21
20200099070
2020-03-26

Fuel cell system

#22
20190393526
2019-12-26

CLOSED LOOP CONTROL FOR FUEL CELL WATER MANAGEMENT

#23
20190148755
2019-05-16

Direct isopropanol fuel cell

#24
20190067714
2019-02-28

Temperature estimating apparatus

#25
20180375132
2018-12-27

REFERENCE OPEN-CIRCUIT-VOLTAGE CELL FOR REDOX FLOW BATTERY

#26
20180351185
2018-12-06

METHOD OF CONTROLLING OPERATION OF FUEL CELL

#27
20180219239
2018-08-02

Fuel cell system

#28
20180145350
2018-05-24

Power conditioning system and control method therefor

#29
20180123152
2018-05-03

Power conditioning system and control method therefor

#30
20180053952
2018-02-22

State detection device and method for fuel cell

#31
20180048006
2018-02-15

Fuel cell internal state detection system and state detection method

#32
20180026280
2018-01-25

Fuel cell system with cathode purging

#33
20170356951
2017-12-14

System and method for measuring insulation resistance of fuel cell vehicle

#34
20170250425
2017-08-31

Method for controlling fuel cell system

#35
20170214068
2017-07-27

Apparatus for measuring an impedance of fuel cell and method of measuring an impedance of fuel cell

#36
20170110750
2017-04-20

Direct isopropanol fuel cell

#37
20170104231
2017-04-13

Fuel cell system and performance improvement method of fuel cell system

#38
20170025693
2017-01-26

Systems and methods for detecting anode contamination in a fuel cell system

#39
20170012333
2017-01-12

Electrochemical battery and method of operating the same

#40
20170012305
2017-01-12

Fuel cell system

#41
20160315342
2016-10-27

Fuel cell system

#42
20160190613
2016-06-30

Fuel cell system and method of controlling operation of fuel cell

#43
20160141688
2016-05-19

Fuel cell system and dryness degree acquisition method

#44
20160103186
2016-04-14

Integrated DC/DC converter, electrochemical energy storage system, and methods for analyzing electrochemical impedance spectroscopy and working state of electrochemical energy storage apparatus

#45
20160064756
2016-03-03

Fuel cell system and method of controlling the fuel cell system

#46
20150343903
2015-12-03

Safety system of fuel cell vehicle and control method for the same

#47
20150136352
2015-05-21

Cooling circuit for fuel cell

#48
20140120434
2014-05-01

Method for determining membrane protonic resistance of a fuel cell stack

#49
20130249562
2013-09-26

Internal resistance measurement device and method for stacked battery

#50
20130244127
2013-09-19

Fuel cell system comprising an anode pressure controller

#51
20130166222
2013-06-27

Method of measuring the electroosmotic transport coefficient of a proton exchange membrane and device for implementing such a method

#52
20130024051
2013-01-24

Device and method for regulating the humidity of a fuel cell

#53
20120321976
2012-12-20

Controlling fuel cell

#54
20120270124
2012-10-25

FUEL CELL SYSTEM AND OPERATING METHOD FOR FUEL CELL SYSTEM

#55
20120105075
2012-05-03

Method for characterizing an electrical system by impedance spectroscopy

#56
20120058404
2012-03-08

Fuel cell system

#57
20120003557
2012-01-05

Fuel cell system and start-up control method therefor

#58
20110189569
2011-08-04

Auto-learning of base stack resistance for HFR based RH control

#59
20110020671
2011-01-27

Internal-resistance measuring device for response-delay type fuel cell

#60
20100221630
2010-09-02

Fuel cell system

#61
20100136444
2010-06-03

Electrical bridge for fuel cell plates

#62
20100127710
2010-05-27

Fuel cell system

#63
20100098979
2010-04-22

Fuel cell system and moving body using the fuel cell system

#64
20100028728
2010-02-04

Humidification control during shutdown of a fuel cell system

#65
20090061263
2009-03-05

FUEL CELL SYSTEM AND METHOD FOR ESTIMATING OUTPUT CHARACTERISTIC OF FUEL CELL

#66
20080224687
2008-09-18

Method and apparatus for monitoring fuel cells

#67
20080197832
2008-08-21

Electrical Leakage Detection Apparatus and Electrical Leakage Detection Method For Fuel Cell

#68
20080131742
2008-06-05

METHOD AND APPARATUS TO SENSE AND CONTROL A MALFUNCTION IN BALANCE OF PLANT FOR FUEL CELL

#69
20080063905
2008-03-13

Fuel cell having actuator controlling unit and method of operating the same

#70
20070281188
2007-12-06

Method for operating a fuel cell system and fuel cell system

#71
20070275287
2007-11-29

Active test fuel cell for characterizing and qualifying cell-internal fuel cell components

#72
20070111045
2007-05-17

Fuel cell power generating system, method for controlling fuel cell power generation, and fuel cell power generating apparatus

#73
20070082240
2007-04-12

Abnormality detecting device of fuel cell system

#74
20060243045
2006-11-02

Fuel gauge for fuel cartridges

#75
20060057446
2006-03-16

Control of conductivity reduction within a fuel cell system

#76
20060053881
2006-03-16

Measurement apparatus for measuring fuel capacity used in a fuel cell system

#77
20050115312
2005-06-02

Fuel gauge for fuel cartridges