ClassID:

86477

C02F2101/301 - CPC Classification

Classification description:

Nature of the contaminant; Organic compounds Detergents, surfactants

Recent Application in this class:
#1
20260070500
2026-03-12

GREY WATER RECLAMATION

#2
20260021467
2026-01-22

MOBILE SYSTEM AND METHOD FOR PFAS EFFLUENT TREATMENT

#3
20260015258
2026-01-15

METHOD, APPARATUS AND SYSTEM FOR REMOVAL OF PFAS FROM AN AQUEOUS SOURCE AND PRODUCTION OF CONCENTRATED PFAS PRODUCT

#4
20260014522
2026-01-15

TREATMENT METHOD AND TREATMENT APPARATUS FOR WASTE AQUEOUS DEVELOPMENT LIQUID, AND DEVELOPING SYSTEM

#5
20250368558
2025-12-04

SYSTEMS AND METHODS FOR PROCESSING ENGINE WASH EFFLUENT

#6
20250303393
2025-10-02

LIQUID CONTAMINANT ABSORBENT AND A METHOD FOR FABRICATING A LIQUID CONTAMINANT ABSORBENT

#7
20250243098
2025-07-31

COMPACT SYSTEM AND METHOD FOR TREATING URINE AND OTHER WASTEWATER

#8
20250230061
2025-07-17

TRAILER CAPABLE OF TREATING PFAS-CONTAMINATED WATER WITH GAC AND/OR RESIN MEDIA

#9
20250177885
2025-06-05

COMPOSITION, SYSTEM AND METHOD FOR REMOVAL OF DETERGENTS FROM AQUEOUS SOLUTIONS

#10
20250018368
2025-01-16

HYDROPHILIC FOAM FOR RETENTION OF ORGANIC AND INORGANIC COMPOUNDS, PRODUCTION PROCESS AND USES THEREOF

#11
20240417292
2024-12-19

COMBINED PHOTOACTIVATED REDUCTION AND OXIDATION PROCESS AND SYSTEM FOR THE TREATMENT OF CONTAMINANTS IN WATER

#12
20240336511
2024-10-10

PROCESSES AND APPARATUSES FOR CONVERTING POLY- AND PERFLUOROALKYL SUBSTANCES

#13
20240336502
2024-10-10

ELECTROCHEMICAL DEVICES OR SYSTEMS COMPRISING REDOX-FUNCTIONALIZED ELECTRODES AND USES THEREOF

#14
20240150199
2024-05-09

INDUSTRIAL WASTE TREATMENT PROCESS AND SYSTEM

#15
20240150198
2024-05-09

METAL POWDER MIXTURE AS HEAT SOURCE FOR TREATING ENVIRONMENTAL MEDIUM

#16
20240009593
2024-01-11

Fluid treatment apparatus, systems, and methods

#17
20230387180
2023-11-30

Systems and methods for shielded inductive devices

#18
20230375518
2023-11-23

Method and System for Determining Surfactant Concentration in Industrial Processes

#19
20230348300
2023-11-02

WATER TREATMENT AGENT

#20
20220396509
2022-12-15

MICROBIAL ASSISTED PHOSPHOROUS RECOVERY UNDER ANAEROBIC CONDITION

#21
20220306491
2022-09-29

Adsorptive removal of perfluorinated or partially fluorinated surfactants

#22
20220204378
2022-06-30

Wash water processing apparatus and sterilization and purification unit, and wash water processing method of semiconductor element or liquid-crystal glasses

#23
20220149146
2022-05-12

Systems and methods for shielded inductive devices

#24
20220023332
2022-01-27

Application of cyclodextrins (CDs) for remediation of perfluoroalkyl substances (PFASs)

#25
20220002173
2022-01-06

Composition and method for purifying, disinfecting and clarifying water

#26
20210230031
2021-07-29

System and method for treating effluent

#27
20210214241
2021-07-15

Method and Apparatus for Removal of Per- and Polyfluoroalkyl Substances (PFAS) from Groundwater

#28
20210179468
2021-06-17

SYSTEM AND METHOD FOR PURIFYING FAECAL-FREE AND SURFACTANT-CONTAINING DOMESTIC WASTEWATER

#29
20210130211
2021-05-06

WATER TREATMENT PROCESS

#30
20210114897
2021-04-22

Apparatus, systems and methods for management of raw water and emissions utilizing heat and/or pressure energy within combustion gas sources

#31
20210039009
2021-02-11

Method and system for purifying contaminated water

#32
20210024388
2021-01-28

ADVANCED OXIDATION WATER TREATMENT SYSTEM AND METHOD

#33
20200399146
2020-12-24

Electrochemical devices or systems comprising redox-functionalized electrodes and uses thereof

#34
20200361788
2020-11-19

METHOD FOR TREATING BY FLOTATION AN AQUEOUS SOLUTION FROM A PETROLEUM PRODUCTION

#35
20200346187
2020-11-05

Titania-carbon dot-reduced graphene oxide composites, their make, and use

#36
20200317555
2020-10-08

Systems and methods for shielded inductive devices

#37
20200316493
2020-10-08

Composition, system and method for removal of detergents from aqueous solutions

#38
20200261858
2020-08-20

PERMEABLE GRAPHENE AND PERMEABLE GRAPHENE MEMBRANES

#39
20200255312
2020-08-13

Wash water processing method

#40
20200216345
2020-07-09

Method and diffusiophoretic water filter with chemical contaminant removal capability

#41
20200171417
2020-06-04

Method and system for treating aqueous fluid resulting from fluoropolymer production step

#42
20200171409
2020-06-04

System and method for water treatment including granular activated carbon regeneration

#43
20200148550
2020-05-14

Recycling method of amphiphilic surface-active pollutants in water

#44
20200070135
2020-03-05

Photocatalyst having high visible-light activity

#45
20190336937
2019-11-07

TREATMENTS FOR PERSISTENT ORGANIC POLLUTANTS

#46
20190300387
2019-10-03

System and method for treatment of soil and groundwater contaminated with PFAS

#47
20190224629
2019-07-25

Superoleophobic membranes for oil/water separation

#48
20190209999
2019-07-11

Device comprising a reactor facility and method for the electrolytic treatment, with relation to flow dynamics, of fluid or gaseous media or mixtures of the two in the reactor facility, and use of the device and the method

#49
20190047889
2019-02-14

Compact water purification unit

#50
20190001308
2019-01-03

Method for the production of new nanomaterials

#51
20180345264
2018-12-06

Photocatalyst having high visible-light activity

#52
20180339921
2018-11-29

Plasma-based methods and systems for treating waters with high electrical conductivity and/or low surface tension

#53
20180290078
2018-10-11

CONTINUOUS RECYCLING OF WASH WATER WITH FLOCCULATION DEVICE AND PROCESS

#54
20180282530
2018-10-04

Application of cyclodextrins (CDS) for remediation of perfluoroalkyl substances (PFASS)

#55
20180273413
2018-09-27

Wastewater detoxification method and system

#56
20180230025
2018-08-16

Device for wastewater purification

#57
20180222781
2018-08-09

Water purification using porous carbon electrode

#58
20180117561
2018-05-03

Plant for waste disposal and associated method

#59
20180079662
2018-03-22

Systems and methods for recovery of purified water and concentrated brine

#60
20170247277
2017-08-31

Apparatus for treating water

#61
20170183246
2017-06-29

Method of degrading perfluorinated compound

#62
20170145669
2017-05-25

Apparatus for Recycling Water for a Shower or Bath

#63
20170113951
2017-04-27

Electrochemical devices or systems comprising redox-functionalized electrodes and uses thereof

#64
20170057849
2017-03-02

Wastewater treatment process for removing chemical oxygen demand

#65
20170057840
2017-03-02

Process for extracting a surfactant using a boronic acid modified material

#66
20170014782
2017-01-19

Gas injection method and apparatus

#67
20160368801
2016-12-22

METHOD AND APPARATUS FOR TREATING WASTEWATER CONTAINING CATIONIC SURFACTANT

#68
20160368786
2016-12-22

Surfactant removal from produced waters

#69
20160297690
2016-10-13

Removal of oil recovery chemicals from production fluids

#70
20160244340
2016-08-25

Device and a process for purification of grey water

#71
20160193573
2016-07-07

METHOD AND SYSTEM FOR ENHANCING MASS TRANSFER IN AERATION/OXYGENATION SYSTEMS

#72
20160167995
2016-06-16

Treatment of oil and grease in water using algae

#73
20160159665
2016-06-09

SYSTEM FOR TREATING WASTE WATER CONTAINING AT LEAST ONE COSMETIC PRODUCT, AND RELATED ARRANGEMENT AND METHOD

#74
20160060143
2016-03-03

Surface-treated calcium carbonate and phyllosilicate and its use in water purification

#75
20140353168
2014-12-04

Electrode for electrochemical abatement of chemical oxygen demand of industrial wastes

#76
20140135212
2014-05-15

Sorbent material and method for using the same

#77
20130306554
2013-11-21

DEVICE FOR PURIFICATION OF SANITARY WASTE WATER

#78
20130208557
2013-08-15

Gas injection method and apparatus

#79
20130153512
2013-06-20

Treatment of surfactant laden wastewater

#80
20130023408
2013-01-24

Amine modified clay sorbents

#81
20120271065
2012-10-25

Method for recovering anionic fluorinated emulsifier

#82
20120165184
2012-06-28

DOPED CATALYTIC CARBONACEOUS COMPOSITE MATERIALS AND USES THEREOF

#83
20120055807
2012-03-08

Methods for decomposing partially fluorinated and perfluorinated surfactants

#84
20110284475
2011-11-24

Apparatus and Method for Treatment of a Contaminated Water-Based Fluid

#85
20110195166
2011-08-11

Modified Biogenic Silica and Method for Purifying a Liquid

#86
20110186509
2011-08-04

PROCESSING OF WATER USING MICROORGANISMS

#87
20110094963
2011-04-28

MEMBRANE SEPARATION METHOD AND MEMBRANE SEPARATION DEVICE

#88
20100224480
2010-09-09

Method for Photocatalytic Separation from Surfactant-Containing Dispersions

#89
20100000947
2010-01-07

TREATING METHOD OF A FLUORINATED SURFACTANT-CONTAINING AQUEOUS SOLUTION

#90
20090261039
2009-10-22

Method of treating water effluent from purging or cleaning steam generator circuits, and a mobile unit enabling the method to be implemented

#91
20090065435
2009-03-12

Modified Biogenic Silica and Method for Purifying a Liquid

#92
20080230483
2008-09-25

Disposable organoclay cartridge

#93
20080217065
2008-09-11

Method and apparatus for electrophoretic separation of solids and water from oil based mud

#94
20080164192
2008-07-10

Device for the purification of contaminated liquid

#95
20080047881
2008-02-28

Automatic Brine Tank Level Sensor Incorporating a Capacitive Oscillator

#96
20080035577
2008-02-14

System and Method for Treatment of Industrial Wastewater

#97
20080023408
2008-01-31

CATCH BASIN INSERT FOR TREATING STORM WATER

#98
20080023398
2008-01-31

Method for removal and recovery of water from polymer manufacturing

#99
20070209999
2007-09-13

Wastewater treatment system

#100
20060283806
2006-12-21

Wastewater treatment process

#101
20060226083
2006-10-12

Method of treating wastewater containing hardly decomposable harmful substances

#102
20060205828
2006-09-14

Recovery of fluorinated surfactants from a basic anion exchange resin having quaternary ammonium groups

#103
20060175263
2006-08-10

Methods and systems for treating wastewater

#104
20060157424
2006-07-20

Methods and systems for treating wastewater using ozone activated flotation

#105
20060151392
2006-07-13

Treatment of wastewater streams containing surfactants

#106
20060036021
2006-02-16

Removing fluorosurfactant from aqueous fluoropolymer dispersions

#107
20050236335
2005-10-27

Method and apparatus for removing contaminants from water

#108
20050230318
2005-10-20

Method of clarifying industrial laundry wastewater using cationic dispersion polymers and anionic flocculent polymers

#109
20050173347
2005-08-11

Removal of fluorinated surfactants from waste water

#110
20050150843
2005-07-14

Method for treatment of liquids, in particular, for purification of contaminated water

#111
19228732
2025-12-02

Versatile physicochemical water treatment system and method

#112
18581246
2024-09-10

Synthesis of non-ionic hydrogels for non-ionic pollutant removal

#113
17730341
2022-10-25

Ground water contamination remediation using a man-made surface water feature