ClassID:

213529

H01M8/04791 - 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 Concentration; Density

Sub-classes:
Recent Application in this class:
#1
20250003094
2025-01-02

ELECTROCHEMICAL CELL DEIONIZATION SYSTEM

#2
20240377035
2024-11-14

GAS DETECTION SYSTEM AND GAS DETECTION METHOD

#3
20240243316
2024-07-18

METHOD FOR REGULATING THE PLATINUM OXIDE FRACTION IN A FUEL CELL, AND FUEL CELL SYSTEM FOR A MOTOR VEHICLE

#4
20240113313
2024-04-04

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

#5
20230417183
2023-12-28

AIRCRAFT FUEL CELL AIR SUPPLY ANTI CONTANIMATION SYSTEM

#6
20220127738
2022-04-28

ELECTROLYTE MANUFACTURING DEVICE AND METHOD FOR MANUFACTURING ELECTROLYTE

#7
20210359316
2021-11-18

Fuel cell system

#8
20210202965
2021-07-01

FUEL CELL SYSTEM AND METHOD FOR PURGING AND REMOVING WATER DURING START AND STOP PROCESS THEREOF

#9
20210036351
2021-02-04

Carbon dioxide production system

#10
20200381751
2020-12-03

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

#11
20200328439
2020-10-15

Methods and apparatus for detecting electrical short circuits in fuel cell stacks

#12
20190140297
2019-05-09

CARBON DIOXIDE SEPARATOR, FUEL CELL SYSTEM INCLUDING SAME, AND METHOD OF OPERATING THE FUEL CELL SYSTEM

#13
20190036133
2019-01-31

Method for determining a content of a gas component in a gas mixture conveyed in a recirculating manner via a fuel cell

#14
20180241057
2018-08-23

Method of starting-up a fuel cell arrangement and fuel cell arrangement

#15
20180097246
2018-04-05

Method and device for operating fuel cells with artificial air

#16
20160315339
2016-10-27

Distribution of electrolytes in a flow battery

#17
20160293979
2016-10-06

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

#18
20160248111
2016-08-25

Carbon dioxide separator, fuel cell system including same, and method of operating the fuel cell system

#19
20150188178
2015-07-02

Safety System for a Flow Battery and Flow Battery System

#20
20150125766
2015-05-07

System and method for controlling fuel cell module

#21
20140236535
2014-08-21

Apparatus and method for softsensing fuel cell system

#22
20140162171
2014-06-12

Anode leak location detection

#23
20140162160
2014-06-12

Fuel cell failure prediction apparatus

#24
20130095402
2013-04-18

Fuel cell and method of operating the fuel cell

#25
20120052408
2012-03-01

Membrane permeation adjustment in PEM fuel cell

#26
20110183238
2011-07-28

Fuel cell

#27
20090291339
2009-11-26

Method of operating a fuel cell system

#28
20090092884
2009-04-09

Fuel cell

#29
20090081523
2009-03-26

FUEL CELL COVER

#30
20080075985
2008-03-27

Adaptive purge control to prevent electrode redox cycles in fuel cell systems

#31
20080038602
2008-02-14

Method for mitigating cell degradation due to startup and shutdown via cathode re-circulation combined with electrical shorting of stack

#32
20070248856
2007-10-25

Fuel cell system and operation method thereof

#33
20050132649
2005-06-23

Hydrogen generator, method of shutting down operation of hydrogen generator, and fuel cell system

#34
20050129990
2005-06-16

Fuel cell system

#35
20050026021
2005-02-03

Fuel cell