ClassID:

213493

H01M8/04522 - 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; Humidity; Ambient humidity; Water content of cathode exhausts

Recent Application in this class:
#1
20260058177
2026-02-26

SYSTEMS AND METHODS FOR FUEL CELL CATHODE EXHAUST HUMIDITY CONTROL

#2
20260024791
2026-01-22

FUEL CELL SYSTEM CONTROL

#3
20250125391
2025-04-17

FIRE PROTECTION SYSTEM AND METHOD FOR REDUCING A FIRE HAZARD IN A PROTECTIVE SPACE

#4
20250030023
2025-01-23

FUEL CELL SYSTEM AND METHOD FOR OPERATING A FUEL CELL SYSTEM

#5
20240258536
2024-08-01

FUEL CELL SYSTEM

#6
20240194909
2024-06-13

SYSTEM FOR MEASURING AMOUNT OF CONSUMED HYDROGEN

#7
20230387433
2023-11-30

Controlling PEMFC stack flooding

#8
20230307678
2023-09-28

ACTIVATION METHOD FOR FUEL CELL AND DEVICE THEREFOR

#9
20230104149
2023-04-06

SYSTEMS AND METHODS FOR CONTROLLING AND MONITORING A FUEL CELL STACK USING CATHODE EXHAUST HUMIDITY

#10
20230012347
2023-01-12

FUEL CELL SYSTEM

#11
20220293976
2022-09-15

Water discharge optimization for fuel cell vehicles

#12
20220255096
2022-08-11

DETERMINATION DEVICE AND METHOD FOR CALCULATING A MOISTURE VALUE IN A FUEL CELL SYSTEM

#13
20220102743
2022-03-31

Electrochemical cell system

#14
20210399320
2021-12-23

DETERMINING THE MASS FLOW OF AN EXHAUST GAS CONSTITUENT OF A FUEL CELL

#15
20210273246
2021-09-02

Method for humidifying a reactant, and fuel cell system for carrying out the method

#16
20210249671
2021-08-12

Fuel cell power system for an unmanned surface vehicle

#17
20210226236
2021-07-22

Fuel cell system, and method of estimating humidity in exhaust gas therefrom

#18
20210057768
2021-02-25

Fuel cell exhaust device

#19
20200176796
2020-06-04

Methods and systems for controlling water imbalance in an electrochemical cell

#20
20200106115
2020-04-02

Method for determining humidity condition in fuel cell system

#21
20190260045
2019-08-22

Fuel cell system and method of controlling the same

#22
20190006686
2019-01-03

Fuel cell power system for an unmanned surface vehicle

#23
20180294491
2018-10-11

Fuel cell vehicle

#24
20180166719
2018-06-14

System and method for controlling fuel cell vehicle

#25
20170271696
2017-09-21

Fuel cell control method and apparatus through estimation of amount of water

#26
20170018826
2017-01-19

Metal air battery and method of operating the same

#27
20160172693
2016-06-16

Perceiving method and system of stack state for fuel cell system

#28
20160141685
2016-05-19

Fuel cell system and control method of fuel cell system

#29
20160036075
2016-02-04

Device for adjusting hollow fiber membrane density for humidification device of fuel cell

#30
20160006060
2016-01-07

Method of controlling operation of fuel cell system

#31
20160006059
2016-01-07

DRIVING CONTROL METHOD AND SYSTEM OF FUEL CELL SYSTEM

#32
20140236535
2014-08-21

Apparatus and method for softsensing fuel cell system

#33
20140186726
2014-07-03

Method to diagnose fuel cell humidification problems

#34
20140162152
2014-06-12

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

#35
20120021321
2012-01-26

Fuel cell system

#36
20110274993
2011-11-10

Fuel cell system

#37
20110183226
2011-07-28

Fuel cell system

#38
20110045365
2011-02-24

Method for removing residual water from fuel cell

#39
20100255873
2010-10-07

Fuel cell with proton conducting membrane and with improved water and fuel management

#40
20100233554
2010-09-16

FUEL CELL SYSTEM AND OPERATING METHOD THEREOF

#41
20100104896
2010-04-29

Device and method for augmenting the useful life of an energy storage device

#42
20100092820
2010-04-15

FUEL CELL SYSTEM

#43
20100086812
2010-04-08

Supply system and warning device for a fuel cell stack and method for controlling the supply system

#44
20100055508
2010-03-04

FUEL CELL SYSTEMS WITH WATER RECOVERY FROM FUEL CELL EFFLUENT

#45
20090305100
2009-12-10

Fuel cell assembly

#46
20090263695
2009-10-22

APPARATUS FOR GENERATING HYDROGEN AND FUEL CELL POWER GENERATION SYSTEM HAVING THE SAME

#47
20090155651
2009-06-18

Fuel cell system and generation control device

#48
20080206610
2008-08-28

Method of Operating an Electrochemical Device Including Mass Flow and Electrical Parameter Controls

#49
20080088273
2008-04-17

FUEL CELL DEVICE WITH RESERVED SIGNAL PINS

#50
20080088043
2008-04-17

Fuell cell system and operation method of fuel cells

#51
20070265802
2007-11-15

Fuel cell operation to minimize RH cycles to improve durability

#52
20070166582
2007-07-19

Fuel cell system

#53
20070111047
2007-05-17

Method of operating fuel cell and power supply system

#54
20060183005
2006-08-17

Drying method for fuel cell stacks

#55
20050233182
2005-10-20

Method for real-time monitoring and control of cathode stoichiometry in fuel cell system

#56
20050037247
2005-02-17

Fuel cell system and method for removal of water from fuel cells

#57
16181965
2020-03-17

Methods and systems for controlling water imbalance in an electrochemical cell