ClassID:

213487

H01M8/04477 - 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; Concentration; Density of the electrolyte

Recent Application in this class:
#1
20260128332
2026-05-07

METHOD AND SYSTEM FOR CONTROLLING WATER BALANCE IN METAL-AIR ELECTROCHEMICAL CELLS

#2
20240413369
2024-12-12

METHOD FOR RECOVERING CAPACITY OF VANADIUM REDOX FLOW BATTERY

#3
20240396064
2024-11-28

ELECTROLYTE TANK VOLUME REBALANCING

#4
20240274853
2024-08-15

INTEGRATED ELECTROLYTE REBALANCING WITH FLOW BATTERY POWER MODULES

#5
20240030476
2024-01-25

STACK DRAINAGE FOR REDOX FLOW BATTERY

#6
20230411663
2023-12-21

FLOW BATTERY STATE OF HEALTH INDICATOR

#7
20230335770
2023-10-19

REDOX FLOW BATTERY WITH RAMAN SPECTROMETER

#8
20230282849
2023-09-07

FUEL CELL SYSTEM

#9
20230231171
2023-07-20

METHODS AND SYSTEMS FOR DETERMINING AVERAGE OXIDATION STATE OF REDOX FLOW BATTERY SYSTEMS

#10
20230197994
2023-06-22

Reforming catalyst pattern for fuel cell operated with enhanced COutilization

#11
20230131299
2023-04-27

CELL FOR ELECTROCHEMICALLY DETERMINING ACTIVE SPECIES CONCENTRATIONS IN REDOX FLOW BATTERIES

#12
20230029737
2023-02-02

Power management of electrolytic cells

#13
20220158275
2022-05-19

Open metal-air fuel cell system capable of uninterruptible power supply

#14
20220069328
2022-03-03

Redox flow battery systems and methods of manufacture and operation and reduction of metallic impurities

#15
20210226239
2021-07-22

Flow battery

#16
20210210778
2021-07-08

Method of restoring electrolyte of vanadium redox flow battery through electrolysis

#17
20210083310
2021-03-18

Regeneration of flow battery

#18
20210083309
2021-03-18

Ion exchange membrane for a redox flow battery

#19
20200373601
2020-11-26

Redox flow battery systems and methods of manufacture and operation and reduction of metallic impurities

#20
20200373600
2020-11-26

Fe—Cr redox flow battery systems and methods of manufacture and operation

#21
20200373595
2020-11-26

Methods and systems for determining average oxidation state of redox flow battery systems using the open circuit voltage

#22
20200373594
2020-11-26

Methods and systems for determining average oxidation state of redox flow battery systems

#23
20200328435
2020-10-15

Cell for electrochemically determining active species concentrations in redox flow batteries

#24
20200185801
2020-06-11

Method for producing an electrolyte for a metal air battery

#25
20200176800
2020-06-04

Reforming catalyst pattern for fuel cell operated with enhanced COutilization

#26
20200176789
2020-06-04

Operation of molten carbonate fuel cells with enhanced COutilization

#27
20200036022
2020-01-30

Method and apparatus for evaluating movement tendency of ions in electrolyte membrane

#28
20190319283
2019-10-17

Fuel cell system and method of estimating content of metal ions

#29
20190305344
2019-10-03

REDOX FLOW BATTERY INCLUDING AN ELECTROLYTE CONCENTRATION MEASURING INSTRUMENT

#30
20190267648
2019-08-29

DETERMINING THE STATE OF CHARGE OF AN ALL-VANADIUM REDOX FLOW BATTERY USING UV/VIS MEASUREMENT

#31
20190115609
2019-04-18

Alkaline hybrid redox flow battery with high energy density

#32
20180159158
2018-06-07

Fuel cell system

#33
20180159157
2018-06-07

FUEL CELL SYSTEM AND METHOD OF OPERATING FUEL CELL SYSTEM

#34
20170279140
2017-09-28

System and method for condition monitoring of redox flow batteries using data analytics

#35
20170229728
2017-08-10

Electrolyte for redox flow battery and redox flow battery system

#36
20170110746
2017-04-20

Methods and systems for detecting leaks in a fuel cell stack

#37
20160301094
2016-10-13

FUEL CELL ASSEMBLY AND METHOD

#38
20160190620
2016-06-30

Fuel cell system and method of controlling the same

#39
20160164125
2016-06-09

Electrochemical systems incorporating in situ spectroscopic determination of state of charge and methods directed to the same

#40
20160111740
2016-04-21

Estimation of the state of charge of a positive electrolyte solution of a working redox flow battery cell without using any reference electrode

#41
20120225360
2012-09-06

METHOD FOR OPERATING A FUEL CELL

#42
20120189922
2012-07-26

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

#43
20120107712
2012-05-03

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

#44
20050130001
2005-06-16

Fuel cell life predicting device and fuel cell system