ClassID:

86632

C02F2209/445 - CPC Classification

Classification description:

Controlling or monitoring parameters in water treatment; Time Filter life

Recent Application in this class:
#1
20260145102
2026-05-28

SWIMMING POOL FILTER DETECTION SYSTEM AND METHOD

#2
20260141797
2026-05-21

WATER FILTRATION DEVICE PERFORMANCE MONITORING SYSTEM

#3
20260035265
2026-02-05

DRINKING WATER PITCHER AND DISPENSER WITH INTERCHANGEABLE CARTRIDGES

#4
20250388488
2025-12-25

SYSTEMS AND METHODS FOR OPTIMIZATION OF CONNECTED WATER DEVICES

#5
20250382811
2025-12-18

Systems and Methods for Controlling Chlorinators

#6
20250368541
2025-12-04

METHOD OF FILTERING TANNERY WASTEWATER AND A TANNERY WASTEWATER TREATMENT SYSTEM

#7
20250352929
2025-11-20

WATER FILTRATION SYSTEM INCLUDING A MODULAR FLOW METER FOR AN APPLIANCE

#8
20250345498
2025-11-13

Water Treatment Systems, Devices, and Methods for Fluid Preparation

#9
20250340454
2025-11-06

METHOD FOR DETERMINING THE REMAINING WATER VOLUME IN A WATER SOFTENING SYSTEM USING H+/(NA+ AND/OR K+)-ION EXCHANGE RESINS

#10
20250339795
2025-11-06

APPLIANCE WATER FILTER SYSTEM HAVING MEMORY AND AUTHENTICATION FUNCTIONALITY

#11
20250326659
2025-10-23

SENSING MODULE, WATER PURIFIER COMPRISING SAME, AND WATER PURIFIER ASSEMBLY

#12
20250325927
2025-10-23

WATER FILTRATION ASSEMBLY OF AN APPLIANCE

#13
20250303366
2025-10-02

DIAGNOSTIC DEVICE, DIAGNOSTIC SYSTEM, DIAGNOSTIC METHOD, AND PROGRAM

#14
20250282648
2025-09-11

METHOD AND AN APPARATUS FOR EVALUATING A CONDITION OF A WATER PURIFICATION SYSTEM

#15
20250263616
2025-08-21

SYSTEMS AND METHODS FOR MANAGING FILTRATION MEDIA BEDS IN GAS AND LIQUID FILTRATION APPARATUS

#16
20250214008
2025-07-03

SWIMMING POOL FILTER DETECTION SYSTEM AND METHOD

#17
20250197247
2025-06-19

HYBRID FILTER AND SYSTEMS AND METHODS FOR ISOLATING MODULES

#18
20250092327
2025-03-20

Systems and methods for managing filtration media beds in gas and liquid filtration apparatus

#19
20250083077
2025-03-13

WATER FILTER AND METHOD FOR OPERATING A WATER FILTER

#20
20250025814
2025-01-23

INTERNAL PERFORMANCE MONITORING FOR WATER FILTER

#21
20240401358
2024-12-05

POOL CLEANING ROBOT WITH DISPLAY DEVICE

#22
20240343619
2024-10-17

PROCESSING SYSTEM, AND PROCESSING METHOD

#23
20240277909
2024-08-22

Medicament Preparation and Treatment Devices, Methods, and Systems

#24
20240270605
2024-08-15

FILTRATION DEVICE FOR A WATER-CONDUCTING HOUSEHOLD APPLIANCE

#25
20240158261
2024-05-16

CHARGEABLE WATER PURIFIER

#26
20240091423
2024-03-21

Water Treatment Systems, Devices, and Methods for Fluid Preparation

#27
20240042458
2024-02-08

MEASURING MAGNETIC DEBRIS BUILDUP IN A MAGNETIC FILTER

#28
20230357060
2023-11-09

Dispensing cartridge alert

#29
20230338892
2023-10-26

PORTABLE ATMOSPHERIC WATER GENERATOR

#30
20230303409
2023-09-28

Water treatment apparatus management system and household water treatment apparatus

#31
20230288117
2023-09-14

ICE MAKER AND SYSTEM AND METHOD FOR MONITORING WATER FILTER OF THE ICE MAKER

#32
20230278889
2023-09-07

Container assembly

#33
20230202888
2023-06-29

MANAGEMENT METHOD FOR WATER TREATMENT DEVICE, REPLACEMENT METHOD FOR WATER TREATMENT MEMBER, AND LIFE EXPECTANCY ESTIMATION METHOD FOR WATER TREATMENT MEMBER

#34
20230118124
2023-04-20

DETECTION OF PERFORMANCE IRREGULARITIES WITHIN MULTI-ELEMENT VESSELS

#35
20230083946
2023-03-16

Portable Water Filtration Device

#36
20220410139
2022-12-29

WATER SOFTENER SYSTEM AND METHOD OF OPERATING THE SAME

#37
20220379244
2022-12-01

SYSTEM FOR SIGNALING AND/OR DISPLAYING A DEPLETION CONDITION OF A FILTER CARTRIDGE

#38
20220297045
2022-09-22

CONTAINER ASSEMBLY

#39
20220168674
2022-06-02

Filter life determination

#40
20220111314
2022-04-14

A WATER FILTRATION DEVICE

#41
20220047790
2022-02-17

Medicament preparation and treatment devices, methods, and systems

#42
20220040609
2022-02-10

WATER FILTER SYSTEM

#43
20220040608
2022-02-10

WATER FILTER SYSTEM

#44
20220040607
2022-02-10

WATER FILTER SYSTEM

#45
20220040606
2022-02-10

Water filter system

#46
20210363030
2021-11-25

Method and an apparatus for evaluating a condition of a water purification system

#47
20210309539
2021-10-07

SYSTEMS AND METHODS FOR OPTIMIZATION OF CONNECTED WATER DEVICES

#48
20210307874
2021-10-07

Dental instrument water supply filter

#49
20210206655
2021-07-08

Fluid treatment management system

#50
20210198880
2021-07-01

Water center appliance and AIO faucet

#51
20210178041
2021-06-17

Water treatment systems, devices, and methods for fluid preparation

#52
20210130191
2021-05-06

Indicator for filtering cartridge management for a filtering bottle, a filtering bottle comprising such an indicator for filtering cartridge management and a set comprising a filtering bottle and such an indicator for filtering cartridge management

#53
20210008483
2021-01-14

Container assembly

#54
20200392015
2020-12-17

Water filter pitcher with sensing capabilities

#55
20200283308
2020-09-10

Water-softening system

#56
20200277769
2020-09-03

Stepped basin sink

#57
20200277768
2020-09-03

Water center appliance and AIO faucet

#58
20200254462
2020-08-13

Measuring magnetic debris buildup in a magnetic filter

#59
20200230534
2020-07-23

Water filter system

#60
20200080008
2020-03-12

Hydrocarbon-in-water purification system

#61
20200048109
2020-02-13

Smart water system

#62
20200031651
2020-01-30

HOME WATER-BASED DRINK FORMULATING SYSTEM

#63
20200009308
2020-01-09

Medicament preparation and treatment devices, methods, and systems

#64
20190381431
2019-12-19

APPLIANCE WATER FILTER SYSTEM HAVING MEMORY AND AUTHENTICATION FUNCTIONALITY

#65
20190352198
2019-11-21

Water softening device and method of operating a water softening device

#66
20190346201
2019-11-14

Liquid purifier and control method thereof

#67
20190322542
2019-10-24

Filter cartridge placement in filter as you pour system

#68
20190300385
2019-10-03

WATER CONTAINER WITH FLOATABLE FILTER SYSTEM

#69
20190299163
2019-10-03

Water purifier

#70
20190291031
2019-09-26

Water filter purge indication

#71
20190275450
2019-09-12

Manifold for domestic water purifier system with specific cartridge replacement

#72
20190256371
2019-08-22

Pitchers, filtration units, and filtration systems and methods

#73
20190218109
2019-07-18

Water purifier

#74
20190193007
2019-06-27

Water filtration system

#75
20190031530
2019-01-31

Water treatment apparatus management system and household water treatment apparatus

#76
20190002303
2019-01-03

Water treatment with notification

#77
20180319672
2018-11-08

Filter cartridge placement in filter as you pour system

#78
20180290085
2018-10-11

Water filter system

#79
20180207561
2018-07-26

WATER FILTER FAUCET HAVING FILTER LIFE DETERMINING FUNCTIONALITY

#80
20180207342
2018-07-26

Water treatment systems, devices, and methods for fluid preparation

#81
20180178148
2018-06-28

Water Filter with Integral Electro Optic System for Testing and Indicating the State of the Filter

#82
20180170772
2018-06-21

Process and apparatus for purification of water

#83
20180163420
2018-06-14

Systems and methods for controlling chlorinators

#84
20180154292
2018-06-07

Water purification device based on filter cartridge anti-counterfeiting identification

#85
20180111863
2018-04-26

Systems and methods for reducing algae blooms and microbial growth by phosphorus removal from aqueous systems

#86
20180079972
2018-03-22

Hydrocarbon-in-water purification system

#87
20180079971
2018-03-22

Hydrocarbon-in-water purification anion-exchange system

#88
20180056215
2018-03-01

FILTER CARTRIDGE

#89
20170349454
2017-12-07

Water purification system

#90
20170326470
2017-11-16

Water production, filtration and dispensing system

#91
20170304752
2017-10-26

Water filter

#92
20170290970
2017-10-12

Medicament preparation and treatment devices, methods, and systems

#93
20170153056
2017-06-01

Water purifier and control method thereof

#94
20170050130
2017-02-23

Appliance water filter system having memory and authentication functionality

#95
20160354715
2016-12-08

Replaceable water filter and memory device for appliance

#96
20160340207
2016-11-24

Smart water filter system

#97
20160332100
2016-11-17

Filter having an automatic control of flow

#98
20160303580
2016-10-20

Hand-held shower head capable of measuring and suggesting replacement of filtering core handle

#99
20160279545
2016-09-29

Water filter purge indication

#100
20160096231
2016-04-07

Wire electric discharge machine having estimation function for filter replacement timing

#101
20160075566
2016-03-17

Electrical connection for an appliance water filter

#102
20160060135
2016-03-03

Reverse Osmosis Water Purification Method and System Thereof

#103
20160046502
2016-02-18

Self-contained water filtration system including wireless communication and filter verification and method of using the same

#104
20160038860
2016-02-11

Self-contained water filtration system and method of using the same

#105
20160002064
2016-01-07

Water treatment valve control system with rotary position sensor

#106
20150376027
2015-12-31

Water filter with filter cartridge block alerting and alerting method

#107
20150375147
2015-12-31

Warning device dedicated for replacing aged-filter in a handheld showerhead

#108
20150290568
2015-10-15

System for detecting a liquid and a water filter assembly

#109
20150290567
2015-10-15

System for detecting a liquid and a water filter assembly

#110
20150251922
2015-09-10

Smart water filter system

#111
20150096943
2015-04-09

Aquarium filter containing a cartridge clog indicator

#112
20150090663
2015-04-02

Methods related to proportional regeneration of water treatment systems

#113
20140374335
2014-12-25

Water filter system

#114
20140318219
2014-10-30

Method for accelerated testing of a membrane module

#115
20140299550
2014-10-09

Water treatment system

#116
20140138329
2014-05-22

Method and apparatus for wash water treatment

#117
20140138292
2014-05-22

Electronic interface for water filtration system

#118
20140116928
2014-05-01

Water treatment system

#119
20140008276
2014-01-09

Water purifying cartridge and pitcher-type water purifier

#120
20130220905
2013-08-29

Water production, filtration and dispensing system

#121
20130106097
2013-05-02

Structure for fastening outlet module of water purifier

#122
20130105403
2013-05-02

Systems and methods for controlling chlorinators

#123
20130083884
2013-04-04

Filter status techniques adapted for use with a container based filtration device

#124
20130068682
2013-03-21

Water filter system

#125
20130068672
2013-03-21

Electronic interface for water filter system

#126
20130068670
2013-03-21

Filter unit

#127
20130048550
2013-02-28

WATER TREATMENT SYSTEM WITH SEALING ENCLOSURE

#128
20130020238
2013-01-24

PERCOLATING FILTER DEVICE

#129
20130015137
2013-01-17

Method of maintaining water quality in a process stream

#130
20130006023
2013-01-03

SYSTEM AND METHOD FOR TREATING GROUNDWATER

#131
20120325342
2012-12-27

Water Filtration System

#132
20120267310
2012-10-25

E-BEAM TECHNOLOGY FOR WATER TREATMENT

#133
20120261318
2012-10-18

Installation-free water purifying device

#134
20120217197
2012-08-30

END OF WATER PURIFICATION CARTRIDGE LIFE APPARATUS

#135
20120193303
2012-08-02

Holding tank-less water ozonating system

#136
20120152004
2012-06-21

Submerged filter indicator

#137
20120055888
2012-03-08

OUTLET FOR SHOWER OR FAUCET HEAD

#138
20120043282
2012-02-23

METHOD AND APPARATUS FOR WASH WATER TREATMENT

#139
20120024765
2012-02-02

FILTERING CORE FOR FLUID

#140
20120000858
2012-01-05

Filter Life Pulsating Indicator and Water Filter System and Method

#141
20110290741
2011-12-01

Water filter pitcher meter

#142
20110278206
2011-11-17

Drinking Container and Filter Assembly

#143
20110237495
2011-09-29

FUNCTIONAL METABOLOMICS COUPLED MICROFLUIDIC CHEMOTAXIS DEVICE AND IDENTIFICATION OF NOVEL CELL MEDIATORS

#144
20110220559
2011-09-15

Water purifying filter assembly module

#145
20110089113
2011-04-21

Twin tank water treatment system and method

#146
20100282692
2010-11-11

PERCOLATION FILTER SYSTEM WITH A REPLACEABLE CARTRIDGE, A METHOD FOR DETERMINING THE DEPLETION OF A REPLACEABLE CARTRIDGE IN A FILTER SYSTEM AND A KIT INTEGRATING THIS METHOD

#147
20100145113
2010-06-10

SYSTEM AND METHOD FOR TREATING GROUNDWATER

#148
20100133297
2010-06-03

Fluid container having an additive dispensing system

#149
20080047883
2008-02-28

Lid for a water filtration apparatus

#150
20080035582
2008-02-14

Method of determination of the conditions of exhaustion of a filtering cartridge for filtering carafes with replaceable cartridge and carafe operating in compliance with such method

#151
20070051671
2007-03-08

Filter jug with replaceable cartridge and method of monitoring and controlling the efficiency of a filter cartridge in a replaceable cartridge filter device

#152
20060207920
2006-09-21

Faucet filter with sight glass

#153
20060191824
2006-08-31

Fluid container having an additive dispensing system

#154
20060175317
2006-08-10

Lifespan monitoring apparatus and method for a filter of an unboiled water pitcher

#155
20060108267
2006-05-25

Single-use long-life faucet-mounted water filtration devices

#156
20060076280
2006-04-13

Single-use long-life faucet-mounted water filtration devices

#157
20060037893
2006-02-23

Single-use long-life faucet-mounted water filtration devices

#158
20060032795
2006-02-16

Single-use long-life faucet-mounted water filtration devices

#159
20060032794
2006-02-16

Single-use long-life faucet-mounted water filtration devices

#160
20060032793
2006-02-16

Single-use long-life faucet-mounted water filtration devices

#161
20060032792
2006-02-16

Single-use long-life faucet-mounted water filtration devices

#162
20060011523
2006-01-19

Water filter cartridge comprising an exchangeable testing unit that contains a conductance sensor

#163
20050236308
2005-10-27

Filter core controller device of water filter device

#164
20050229700
2005-10-20

Apparatus and methods for monitoring water consumption and filter usage

#165
20050229699
2005-10-20

Apparatus and methods for monitoring water consumption and filter usage

#166
20050224422
2005-10-13

Method of determination of the conditions of exhaustion of a filtering cartridge for filtering carafes with replaceable cartridge and carafe operating in compliance with such method

#167
20050092661
2005-05-05

Faucet-mounted water filtration device including gate position sensor

#168
20050035036
2005-02-17

Water-purification jug, for domestic use

#169
20050000867
2005-01-06

Water filtering apparatus

#170
18427565
2025-02-11

Data display system and method for new energy digital water purifier

#171
16216979
2019-06-18

Expandable water filter reservoir

#172
16006753
2018-12-11

Expandable water filter reservoir

#173
15933919
2018-07-03

Water filter system

#174
15792662
2018-06-12

Expandable water filter reservoir

#175
15202365
2017-10-24

Expandable water filter reservoir