ClassID:

86639

C02F2301/04 - CPC Classification

Classification description:

General aspects of water treatment Flow arrangements

Sub-classes:
Recent Application in this class:
#1
20260116782
2026-04-30

Water Treatment Systems and Methods of Treating Water

#2
20260078021
2026-03-19

INTELLIGENT REVERSE OSMOSIS CONTROL

#3
20250382212
2025-12-18

METHOD OF FILTERING WASTEWATER AND A WASTEWATER TREATMENT SYSTEM

#4
20250361158
2025-11-27

FLOATING CARRIER FOR WATER HEAVY METAL REMOVAL REAGENTS AND METHOD FOR REMOVING HEAVY METALS FROM WATER

#5
20250353765
2025-11-20

WASTE WATER TREATMENT SYSTEM USING AEROBIC GRANULAR SLUDGE GRAVITY-DRIVEN MEMBRANE SYSTEM

#6
20250289740
2025-09-18

MEMBRANE BIOREACTOR MODULE

#7
20250263311
2025-08-21

Method and apparatus for controlling water generation from surface moisture of large water reservoirs using a case based expert system

#8
20250197256
2025-06-19

SYSTEMS AND METHODS FOR DESTROYING PER- AND POLYFLUOROALKYL SUBSTANCES (PFAS) USING AN ELECTROCHEMICAL (EC) REACTOR

#9
20250134063
2025-05-01

CENTRIFUGAL PUMP PET WATER FOUNTAIN

#10
20250115506
2025-04-10

Parallel Supercritical Water Oxidation (SCWO) Reactors with External Heating and Methods of Destroying PFAS

#11
20250091909
2025-03-20

DESALINATION SYSTEM AND METHOD FOR DESALINATION OF WATER

#12
20250083984
2025-03-13

WATER TREATMENT SYSTEM VALVE BODY

#13
20240383778
2024-11-21

Fluid Treatment Facility Which Operates Under Pressure and Implements a Fluidised Bed of Adsorbent Media Particles

#14
20240308883
2024-09-19

Hollow fiber nanofiltration membrane system and control method thereof

#15
20240100481
2024-03-28

System for reverse osmosis

#16
20240002253
2024-01-04

Water treatment systems and methods of treating water

#17
20230228473
2023-07-20

WATER PURIFIER

#18
20230122433
2023-04-20

Water purifier with leakproof function

#19
20230080847
2023-03-16

WATER TREATMENT DEVICE

#20
20230069293
2023-03-02

Environmentally friendly water intake and pretreatment system

#21
20230044004
2023-02-09

Greywater treatment system

#22
20230036539
2023-02-02

Waste Liquid Treatment System and Method

#23
20220396510
2022-12-15

GAS-LIQUID-SOLID SEPARATOR

#24
20220288536
2022-09-15

PERMEATE FLOW PATERNS

#25
20220288535
2022-09-15

Preferred flow paths for spiral-wound elements

#26
20220281763
2022-09-08

Fluid treatment system and process

#27
20220259080
2022-08-18

Membrane filter apparatus for liquid mixtures

#28
20220242751
2022-08-04

FLUIDIZED ADSORPTION DEVICE AND FLUIDIZED ADSORPTION METHOD FOR SEWAGE TREATMENT

#29
20220127168
2022-04-28

Integrated power system

#30
20220098062
2022-03-31

WATER SOFTENING SYSTEM

#31
20220024796
2022-01-27

WASTE WATER TREATMENT SYSTEM USING AEROBIC GRANULAR SLUDGE GRAVITY-DRIVEN MEMBRANE SYSTEM

#32
20220024786
2022-01-27

GAS-DRIVEN DIFFUSIOPHORETIC WATER FILTRATION DEVICE WITH IMPROVED INLET, OUTLET AND MEMBRANE STRUCTURES TOOL

#33
20210391101
2021-12-16

METHOD OF PRODUCING PERMANENTLY STRUCTURED WATER

#34
20210363038
2021-11-25

Device for sewage treatment

#35
20210347663
2021-11-11

Apparatus for producing drinkable water from air

#36
20210317022
2021-10-14

Modular water purification system

#37
20210300792
2021-09-30

Water Sanitizing System

#38
20210221712
2021-07-22

Magnetization purifying device for air and water

#39
20210212286
2021-07-15

Centrifugal pump pet water fountain

#40
20210206654
2021-07-08

Water treatment systems and methods of treating water

#41
20210171369
2021-06-10

Methods of removing contaminants from a solution, and related systems

#42
20210155514
2021-05-27

Robust flow-through platform for organic contaminants removal

#43
20210123226
2021-04-29

Outdoor drain filter with flood protection

#44
20210070632
2021-03-11

Fluid sterilization apparatus

#45
20210024393
2021-01-28

ION REMOVAL SYSTEM

#46
20200392023
2020-12-17

Water treatment system and method

#47
20200385284
2020-12-10

Automated Waste Water Treatment

#48
20200325050
2020-10-15

Method and Device for Biological Waste Water Purification

#49
20200247686
2020-08-06

Manifold for domestic water purifier system with specific cartridge replacement

#50
20200216342
2020-07-09

PORTABLE WATER TREATMENT SYSTEM USING OZONE

#51
20200198992
2020-06-25

Water-purification cartridge and water purifier

#52
20200156975
2020-05-21

METHOD OF UPGRADING THE ACTIVATED SLUDGE PROCESS BASED ON FUNCTIONAL SUSPENDED CARRIERS IN THE WASTEWATER BIOLOGICAL TREATMENT PROCESS

#53
20200095146
2020-03-26

Method for a water treatment in a system comprising at least one sequencing batch reactor and a moving bed biofilm reactor

#54
20200055740
2020-02-20

Method for directly and deeply purifying high concentration organic wastewater

#55
20200002191
2020-01-02

Fluid sterilization apparatus

#56
20190358590
2019-11-28

Permeate flow paterns

#57
20190345040
2019-11-14

Water-purification cartridge and water purifier

#58
20190300394
2019-10-03

DESALINATION SYSTEM

#59
20190263677
2019-08-29

Environmentally friendly water intake and pretreatment system

#60
20190248691
2019-08-15

SYSTEM AND METHOD FOR OPTIMIZATION OF AN ION EXCHANGE SYSTEM

#61
20190177179
2019-06-13

Controlling a vacuum sewer system

#62
20190169044
2019-06-06

Water treatment systems and methods of treating water

#63
20190083904
2019-03-21

Apparatus and Method for Separation of Oil From Oil-Containing Produced Water

#64
20180328006
2018-11-15

For diluting or concentrating solutions, applied to processes for the desalination of water

#65
20180282180
2018-10-04

Water quality management device, water treatment system, water quality management method, and program for optimizing water treatment system

#66
20180273400
2018-09-27

Counterflow adsorption filter column for water treatment

#67
20180251385
2018-09-06

Water treatment system

#68
20180244542
2018-08-30

Sterilization structure of water outlet and water treatment device containing same

#69
20180236381
2018-08-23

IFS AND GRIT BOX FOR WATER CLARIFICATION SYSTEMS

#70
20180194643
2018-07-12

Radium removal from aqueous media using zeolite materials

#71
20180186672
2018-07-05

Process and facility for the treatment of livestock waste

#72
20180171529
2018-06-21

CONTROL METHOD OF FLOCCULATION WASHING MACHINE, AND WASHING MACHINE

#73
20170321412
2017-11-09

Oil leak detection circuit and blocking mechanism for use in a storm water drainage system

#74
20170211808
2017-07-27

Reactor for hydrothermal carbonization with optimized mixture of sludge and steam

#75
20170073245
2017-03-16

Method for mixing industrial waste water within a gravity settling tank

#76
20170050133
2017-02-23

Water filter cartridge with air conduction

#77
20170015575
2017-01-19

Wastewater treatment system having flow ports for modulating flow

#78
20170014769
2017-01-19

Water treatment apparatus

#79
20160289098
2016-10-06

Microscale-based device for purifying fluid and method of use

#80
20160272512
2016-09-22

Water purification device

#81
20160229703
2016-08-11

Water distribution system with dual use water treatment unit

#82
20160115045
2016-04-28

Purification of ultra-high saline and contaminated water by multi-stage ion concentration polarization (ICP) desalination

#83
20160096750
2016-04-07

SEALING STRUCTURE AND FLUID TREATMENT UNIT

#84
20160031722
2016-02-04

Counter current filter apparatus for treatment or purification of water

#85
20150251938
2015-09-10

Wastewater overflow systems and methods

#86
20150166381
2015-06-18

Apparatus for biological sewage treatment

#87
20150076083
2015-03-19

Apparatus and method for separation of oil from oil-containing produced water

#88
20150068987
2015-03-12

FILTRATION SYSTEMS FOR FAUCETS

#89
20150053625
2015-02-26

ARRANGEMENT AND METHOD FOR PRODUCING A FLOW IN A WASTEWATER TREATMENT TANK

#90
20150053618
2015-02-26

Ion exchange cartridge for treating drinking water

#91
20150014235
2015-01-15

SYSTEMS AND METHODS FOR PROVIDING A FEEDWELL

#92
20140251891
2014-09-11

Filter cartridge and filter device

#93
20130298998
2013-11-14

Water distribution system with dual use water treatment unit

#94
20130175215
2013-07-11

Engineered wetland device of continuous operation for wastewater treatment under low temperature

#95
20130056402
2013-03-07

SEALING STRUCTURE, FLUID TREATMENT UNIT, FLUID TREATMENT DEVICE AND MANUAL SWITCHING MECHANISM THEREFOR

#96
20120255912
2012-10-11

Process for Treating Water to be Treated by Clarification Comprising an Adsorption of a Portion of Clarified Water and a Clarification of a Mixture of Adsorbed Clarified Water and Water to be Treated

#97
20120168357
2012-07-05

Liquid filter device

#98
20110290739
2011-12-01

Methods for variably sterilizing aqueous liquids

#99
20110042311
2011-02-24

MEMBRANE SYSTEM

#100
20100133155
2010-06-03

Water distribution system with dual use water treatment unit

#101
18390252
2024-11-12

Centrifugal pump pet water fountain

#102
18386676
2025-09-23

Centrifugal pump pet water fountain

#103
17449962
2023-06-27

Systems and processes for removing pollutants from water, reducing greenhouse gas emissions, and reducing aquatic ecosystem destruction

#104
17381256
2022-02-01

Filtration system with macroporous support and gasketed membrane filter

#105
17381250
2021-12-21

Method for filtering liquid mixture

#106
16291906
2022-07-26

Devices, systems, and methods for removing contaminants from water

#107
16194314
2019-07-09

Self priming and evacuating liquid sterilizing system

#108
15801469
2019-12-24

Water disposal system using an engine as a water heater