ClassID:

120664

C23F13/04 - CPC Classification

Classification description:

Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions Controlling or regulating desired parameters

Recent Application in this class:
#1
20260092861
2026-04-02

HIGH PRESSURE AND HIGH TEMPERATURE ANODE AND REFERENCE ELECTRODES ASSEMBLIES

#2
20260063331
2026-03-05

SYSTEMS AND METHODS FOR CATHODIC PROTECTION

#3
20250377286
2025-12-11

METHOD AND SYSTEM FOR CORROSION PROTECTION

#4
20250341457
2025-11-06

SYSTEMS AND METHODS TO REMOTELY OBTAIN PIPELINE POTENTIALS

#5
20250270708
2025-08-28

PROTECTION SYSTEM FOR PIPELINES

#6
20250263843
2025-08-21

ELECTRODE AND CIRCUITRY DESIGN FOR CORROSION PROTECTION IN LIQUID COOLING SYSTEM

#7
20250243587
2025-07-31

METHODS AND SYSTEMS FOR DETECTING CATHODIC PROTECTION INTERFERENCE

#8
20250102420
2025-03-27

APPARATUS AND METHOD FOR CORROSION PROTECTION MONITORING

#9
20240418629
2024-12-19

COATED STRUCTURE WITH A MONITORING SYSTEM, A MONITORING SYSTEM, AND A METHOD FOR MONITORING A CONDITION OF A COATED STRUCTURE

#10
20240328924
2024-10-03

DEVICE, SYSTEM AND METHOD FOR TESTING CORROSION PROTECTION SYSTEMS

#11
20240279817
2024-08-22

METHODS FOR CONTROLLING AND MONITORING THE DEGREE OF CATHODIC PROTECTION FOR METAL STRUCTURES AND BURIED PIPELINES USING COUPLED MULTIELECTRODE SENSORS

#12
20240200201
2024-06-20

SYSTEM AND METHOD FOR CATHODIC PROTECTION MONITORING

#13
20240191363
2024-06-13

Cathodic Protection Unit

#14
20240183039
2024-06-06

DEVICE FOR THE CATHODIC PROTECTION OF METAL COMPONENTS OF BOATS

#15
20240084693
2024-03-14

Measuring Device for a Casing of a Deep Boring

#16
20240052979
2024-02-15

Delimiting unit, pipeline system and method for operating a pipeline system

#17
20230366677
2023-11-16

Magnetically coupled integrated ultrasonic testing and cathodic protection measurement probe

#18
20230366103
2023-11-16

METHODS FOR CONTROLLING AND MONITORING THE DEGREE OF CATHODIC PROTECTION FOR METAL STRUCTURES AND BURIED PIPELINES USING COUPLED MULTIELECTRODE SENSORS

#19
20230193480
2023-06-22

Cathodic protection system and method

#20
20230096293
2023-03-30

IMPRESSED CURRENT CATHODIC PROTECTION SYSTEM AND A METHOD OF OPERATING THE SYSTEM

#21
20230070863
2023-03-09

Method of selectively interrupting a passive cathodic protection unit from a metallic structure

#22
20230058373
2023-02-23

PH SENSOR DEVICE INTENDED TO BE INSERTED INTO THE GROUND, METHOD FOR MEASURING PH, IN PARTICULAR FOR CATHODIC PROTECTION

#23
20230014791
2023-01-19

Apparatus and system for automated assessment of cathodic protection system for pipelines

#24
20220364243
2022-11-17

CATHODIC PROTECTION WAVEFORM MONITORING UNIT WITH ASYNCHRONOUS MONITORING

#25
20220363354
2022-11-17

Cathodic protection and anti-fouling arrangement and method

#26
20220349065
2022-11-03

MARINE SALINITY MEASURING ARRANGEMENT AND METHOD

#27
20220326141
2022-10-13

Coated structure with a monitoring system, a monitoring system, and a method for monitoring a condition of a coated structure

#28
20220228269
2022-07-21

CATHODIC PROTECTION SYSTEM AND MINATURIZED CONSTANT CURRENT RECTIFIER

#29
20220128454
2022-04-28

POTENTIAL MEASURING DEVICE AND METHOD

#30
20220065406
2022-03-03

ASSESSMENT OF EXTERNAL COATING DEGRADATION SEVERITY FOR BURIED PIPELINES

#31
20220049363
2022-02-17

Methods for controling and monitoring the degree of cathodic rotection for metal structutres and burried pipelines using coupled mutielectrode sensors

#32
20210388510
2021-12-16

SHORT MESSAGE SERVICE TRANSCEIVER MODULE

#33
20210348281
2021-11-11

Cathodic protection monitoring system

#34
20210310133
2021-10-07

INTEGRATION CENTER AND APPLICATION FOR ANTI-CORROSION MODULES AND INSTALLATION METHOD FOR ANTI-CORROSIVE PROTECTION OF METALLIC SURFACES

#35
20210310132
2021-10-07

Automated corrosion monitoring and control system for molten salt equipment

#36
20210292916
2021-09-23

Cathodic Corrosion Protection with Current Limiter

#37
20210276890
2021-09-09

Systems and devices for corrosion prevention and methods thereto

#38
20210239465
2021-08-05

Magnetically coupled integrated ultrasonic testing and cathodic protection measurement probe

#39
20210198789
2021-07-01

SYSTEMS, APPARATUSES, AND METHODS TO ASSESS CORROSION PREVENTION

#40
20210172860
2021-06-10

System and method for analyzing cathodic protection current shielding of a coating

#41
20210095380
2021-04-01

Automated cathodic protection measurement and communication system and method

#42
20210063052
2021-03-04

Cathodic corrosion and dry fire protection apparatus and methods for electric water heaters

#43
20210040623
2021-02-11

SAFETY SYSTEM AND METHOD FOR DE-COUPLING OF A CATHODICALLY PROTECTED STRUCTURE

#44
20200308712
2020-10-01

Cathodic corrosion protection with current limiter

#45
20200292441
2020-09-17

Electrochemical corrosion under controlled redox conditions

#46
20200291531
2020-09-17

Cathodic protection system and miniaturized constant current rectifier

#47
20200248319
2020-08-06

Integrated Impressed Current Cathodic Protection for Wet Crude Handling Vessels

#48
20200232905
2020-07-23

Corrosion resistance tester for coated metal material

#49
20200232103
2020-07-23

Cathodic protection for offshore wind turbine steel support structures

#50
20200232102
2020-07-23

Method and system for autonomous measurement of transmission line EMF for pipeline cathodic protection systems

#51
20200199765
2020-06-25

Corrosion protection system for heating ventalation air conditioning refrigeration

#52
20200109478
2020-04-09

System for impressed current cathodic protection

#53
20200087799
2020-03-19

ARRANGEMENT FOR ANTI-FOULING OF A PROTECTED SURFACE

#54
20200024753
2020-01-23

System and method for reinforcing and protecting reinforced concrete structure employing carbon fiber textile grid as both reinforcement member and anode

#55
20200017977
2020-01-16

Real-time cathodic protection integrity monitoring sensor, system and method

#56
20190353550
2019-11-21

Polymeric nanocomposite based sensor and coating systems and their applications

#57
20190352872
2019-11-21

Load arrangement for powering a load

#58
20190211459
2019-07-11

Cathodic protection for wood veneer dryers and method for reducing corrosion of wood veneer dryers

#59
20190203977
2019-07-04

Method and system for monitoring powered anode drive level

#60
20190203363
2019-07-04

Method and system for controlling powered anode drive level

#61
20190186030
2019-06-20

Systems and methods for controlling electrochemical processes

#62
20190181590
2019-06-13

Foreign substance detecting circuit and electronic device including the same

#63
20190127861
2019-05-02

Cathodic protection waveform monitoring unit with asynchronous monitoring

#64
20190085468
2019-03-21

Systems and methods for providing monitored and controlled cathodic protection potential

#65
20190071782
2019-03-07

Cathodic corrosion protection with solar panel

#66
20190032226
2019-01-31

CATHODIC PROTECTION OF COPPER PLUMBING SYSTEM FOR PREVENTION OF CORROSION

#67
20190010615
2019-01-10

Cathodic corrosion protection system with rebar mounting assembly

#68
20190010614
2019-01-10

Cathodic corrosion protection with current limiter

#69
20180372615
2018-12-27

Integrated ultrasonic testing and cathodic protection measurement probe

#70
20180363149
2018-12-20

Systems, apparatuses, and methods to assess corrosion prevention

#71
20180222778
2018-08-09

Method and system for applying superimposed time-varying frequency electromagnetic wave to water to effect various treatment functions

#72
20180222777
2018-08-09

Method and system for applying superimposed time-varying frequency electromagnetic wave to target object or target region

#73
20180221821
2018-08-09

Method and system for applying superimposed time-varying frequency electromagnetic wave for removal of SO, COand NOfrom flue gases

#74
20180216246
2018-08-02

Method and system for applying superimposed time-varying frequency electromagnetic wave for corrosion protection of submerged and/or buried structures

#75
20180201526
2018-07-19

Method and system for applying superimposed time-varying frequency electromagnetic wave for marine ballast water bio-fouling control

#76
20180128514
2018-05-10

System and method of controlling a water heater having a powered anode

#77
20180112316
2018-04-26

METHOD FOR THE SURFACE TREATMENT OF A BIOCORRODABLE IMPLANT

#78
20180073975
2018-03-15

Integrated ultrasonic testing and cathodic protection measurement probe

#79
20180073867
2018-03-15

Magnetically coupled integrated ultrasonic testing and cathodic protection measurement probe

#80
20180051910
2018-02-22

Cathodic corrosion and dry fire protection apparatus and methods for electric water heaters

#81
20170255913
2017-09-07

System for distributing electrical energy

#82
20170211191
2017-07-27

SYSTEMS AND METHODS TO PREVENT CONTAMINATION OF POTABLE WATER WITH LEAD AND/ OR IRON, AND TO EXTEND THE USEFUL LIFE OF THE POTABLE WATER SYSTEM, WHILE REDUCING MAINTENANCE AND CAPITAL COSTS

#83
20170191171
2017-07-06

Fiber optics to monitor pipeline cathodic protection systems

#84
20170029961
2017-02-02

CATHODIC PROTECTION OF COPPER PLUMBING SYSTEM FOR PREVENTION OF CORROSION

#85
20160362797
2016-12-15

Cathodic protection for wood veneer dryers and method for reducing corrosion of wood veneer dryers

#86
20160348255
2016-12-01

Automated tank cathodic protection/corrosion monitoring system

#87
20160326657
2016-11-10

CORROSION PROTECTION SYSTEM AND PUMP DEVICE WITH THE SAME

#88
20160258652
2016-09-08

Water heater and method of controlling a water heater

#89
20160145748
2016-05-26

HIGH SPEED SEQUENTIAL CATHODIC PROTECTION SYSTEMS AND METHODS

#90
20160002794
2016-01-07

CORROSION CONTROL FOR SUPERCRITICAL WATER GASIFICATION COMPONENTS

#91
20150368809
2015-12-24

Cathodic protection management system

#92
20150299868
2015-10-22

Corrosion protection using a sacrificial anode

#93
20150284860
2015-10-08

PROTECTION OF STEEL REINFORCED CONCRETE ELEMENTS

#94
20150218712
2015-08-06

System and method for providing corrosion protection of metallic structure using time varying electromagnetic wave

#95
20150159280
2015-06-11

Cathodic protection automated current and potential measuring device for anodes protecting vessel internals

#96
20150060298
2015-03-05

METHOD FOR THE GALVANIC PROTECTION OF A REINFORCED CONCRETE STRUCTURE

#97
20140376899
2014-12-25

Cathodic corrosion and dry fire protection apparatus and methods for electric water heaters

#98
20140339946
2014-11-20

Reduction of electrolytic corrosion in a brushless direct-current motor

#99
20140321838
2014-10-30

System and method for adjusting anode rod galvanic corrosion

#100
20140318984
2014-10-30

Systems and methods for impressed current cathodic protection

#101
20140262823
2014-09-18

Digitally controlled corrosion protection system and method

#102
20140262822
2014-09-18

Sacrificial anode control

#103
20140251823
2014-09-11

Galvanic protection circuit for a brake disc-pad unit for a motor vehicle and kit and method thereof

#104
20140151241
2014-06-05

Pipeline communications

#105
20140021063
2014-01-23

Two stage cathodic protection system using impressed current and galvanic action

#106
20140021062
2014-01-23

Charging a sacrificial anode with ions of the sacrificial material

#107
20140008242
2014-01-09

Electrochemical apparatus

#108
20130292263
2013-11-07

Multiple Structure Cathodic Protection System

#109
20130228471
2013-09-05

Adaptive active cathodic protection

#110
20120308185
2012-12-06

Underwater optical fibre cable

#111
20120298525
2012-11-29

Method for protecting electrical poles and galvanized anchors from galvanic corrosion

#112
20120261270
2012-10-18

Sacrificial anode and treatment of concrete

#113
20120205256
2012-08-16

Cathodic protection assessment probe

#114
20120199495
2012-08-09

System and method for detecting and preventing galvanic corrosion

#115
20120189425
2012-07-26

SYSTEM AND METHOD FOR REDUCING CORROSION IN A COMPRESSOR

#116
20120152733
2012-06-21

Apparatus for use with metallic structures

#117
20120152559
2012-06-21

System and method for cathodic protection of a subsea well-assembly

#118
20120074954
2012-03-29

ELECTRICAL CONNECTOR WITH CORROSION PREVENTION

#119
20110299840
2011-12-08

ELECTRICAL WATER HEATING SYSTEM

#120
20110290665
2011-12-01

Method and apparatus for providing electrochemical corrosion protection

#121
20110290664
2011-12-01

Cased pipe internal cathodic protection apparatus and method

#122
20110238347
2011-09-29

APPARATUS AND SYSTEM FOR AUTOMATED PIPELINE TESTING

#123
20110129302
2011-06-02

Cathodic protection monitoring

#124
20110119006
2011-05-19

Cathodic protection monitor

#125
20110089048
2011-04-21

Auxiliary device, a marine surface vessel and a method for a sacrificial anode in a marine construction

#126
20110083973
2011-04-14

Auxiliary device, a marine surface vessel, and a method for corrosion protection in a marine construction

#127
20110000794
2011-01-06

Control of a corrosion protection system

#128
20100270169
2010-10-28

Cathodic protection method and apparatus

#129
20100213955
2010-08-26

Method and device for monitoring and detecting the coating defects of underground or underwater pipelines

#130
20100101933
2010-04-29

Inhibition of corrosion of structures

#131
20100070104
2010-03-18

Cathodic protection monitor

#132
20100039127
2010-02-18

System for assessing pipeline condition

#133
20090229973
2009-09-17

Monitoring methods, systems and apparatus for validating the operation of a current interrupter used in cathodic protection

#134
20090166219
2009-07-02

Electrical device for impeding corrosion

#135
20090138148
2009-05-28

Corrosion protection system

#136
20090078585
2009-03-26

Using an impressed current cathodic protection system to power electrical appliances

#137
20090065367
2009-03-12

Applications for sacrificial anodes

#138
20080302784
2008-12-11

WATER STORAGE DEVICE HAVING A POWERED ANODE

#139
20080276731
2008-11-13

System and method for measuring electric current in a pipeline

#140
20080204274
2008-08-28

Cathodic protection monitor

#141
20080164334
2008-07-10

Water storage device having a powered anode

#142
20070261969
2007-11-15

Method and apparatus for copper corrosion prevention during wet clean

#143
20070251834
2007-11-01

Automatic potential control cathodic protection system for storage tanks

#144
20070232087
2007-10-04

Signal processing device and control unit

#145
20070158184
2007-07-12

Cathodic protection system for non-isolated structures including a microprocessor control

#146
20070096752
2007-05-03

System and method for measuring electric current in a pipeline

#147
20070085345
2007-04-19

Corrosion protection for wind turbine units in a marine environment

#148
20070023295
2007-02-01

Apparatus, system and method for extending the life of sacrificial anodes on cathodic protection systems

#149
20060213766
2006-09-28

Wireless monitoring of two or more electrolytic cells using one monitoring device

#150
20060203411
2006-09-14

Multi-Purpose Interrupter for Cathodic Protection Systems

#151
20060198954
2006-09-07

Method for reducing corrosion

#152
20060188072
2006-08-24

Circuit arrangement for a corrosion protection current feed and for a line test for two-wire lines

#153
20060091001
2006-05-04

Methods and systems of cathodic protection for metallic enclosures

#154
20060083491
2006-04-20

Water storage device having a powered anode

#155
20060070871
2006-04-06

Cathodic protection system for underground storage tank

#156
20060065551
2006-03-30

Corrosion tester

#157
20060054072
2006-03-16

Marine vessel corrosion control system

#158
20050168208
2005-08-04

System and method for measuring electric current in a pipeline

#159
20050109635
2005-05-26

Semiconductive corrosion and fouling control apparatus, system, and method

#160
20050006250
2005-01-13

Method and apparatus for instrumental analysis in remote locations

#161
17873329
2025-11-11

Anode mounting head apparatus for heater treaters, tanks, vessels and other devices

#162
14810504
2018-01-02

Methods and apparatus for monitoring a sacrificial anode