ClassID:

30846

B01D2321/162 - CPC Classification

Classification description:

Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling; Use of chemical agents Use of acids

Recent Application in this class:
#1
20260097367
2026-04-09

FILTER CLEANING METHODS AND APPARATUSES

#2
20260014522
2026-01-15

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

#3
20250320134
2025-10-16

CONTROL METHOD FOR DELAYING NANOFILTRATION MEMBRANE ALUMINUM FOULING OF WATER TREATMENT SYSTEM

#4
20250297191
2025-09-25

CLEANING COMPOSITION

#5
20250269330
2025-08-28

ADAPTIVE CLEANING-IN-PLACE METHOD FOR A MEMBRANE FILTRATION SYSTEM

#6
20250188387
2025-06-12

LOW TOXICITY SURFACTANT BOOSTER COMPOSITIONS FOR FILTRATION MEMBRANE CLEANING APPLICATIONS

#7
20250114744
2025-04-10

BIOCIDE COMPOSITION AND METHOD

#8
20250100907
2025-03-27

REMOVING BIVALENT IONS FROM PRODUCED WATER

#9
20250065272
2025-02-27

METHOD FOR OPERATING SEPARATION MEMBRANE, SEPARATION MEMBRANE DEVICE, AND PROGRAM FOR DETERMINING OPERATING CONDITIONS OF SEPARATION MEMBRANE

#10
20240390859
2024-11-28

CLEANING AGENT, CLEANING LIQUID AND CLEANING METHOD FOR AROMATIC POLYAMIDE REVERSE OSMOSIS MEMBRANES

#11
20240217855
2024-07-04

SELF-MEDIATED SALTLESS WHOLE HOME WATER TREATMENT SYSTEMS AND METHODS

#12
20240157305
2024-05-16

SELF-CLEANING DECENTRALIZED WATER TREATMENT UNIT

#13
20240076576
2024-03-07

CLEANING COMPOSITION

#14
20230405524
2023-12-21

BIOCIDE COMPOSITION AND METHOD

#15
20230330601
2023-10-19

METHODS FOR TREATING POROUS MEMBRANES

#16
20230285904
2023-09-14

METHOD FOR OPERATING SEPARATION MEMBRANE MODULE, COMPUTER-READABLE RECORDING MEDIUM HAVING PROGRAM RECORDED THEREON, AND WATER PRODUCTION SYSTEM

#17
20220355253
2022-11-10

Desalination performance restoration agent for cellulose acetate membrane and desalination performance restoration method for cellulose acetate membrane

#18
20220348849
2022-11-03

CHEMICAL PRODUCT AND PROCESS FOR CLEANING NANOFILTRATION AND REVERSE OSMOSIS MEMBRANES

#19
20220331742
2022-10-20

SILICA ANTISCALANT COMPOSITION AND METHOD FOR SILICA SCALING INHIBITION IN MEMBRANE APPLICATIONS

#20
20220266201
2022-08-25

Polyamide (PA) nanofiltration (NF) membrane, and preparation method thereof by regeneration from scrapped microfiltration (MF) membrane

#21
20220025296
2022-01-27

Cleaning composition

#22
20220001337
2022-01-06

Membrane disinfectant

#23
20210339195
2021-11-04

Biocide composition and method

#24
20210322928
2021-10-21

Charge neutral biocide dosing control for membrane biofouling control applications

#25
20210178342
2021-06-17

REMOVING METAL IONS WITH A MEMBRANE BASED ON ANIONIC POLYARYLENE ETHERSULFONE AND A CATIONIC POLYMER WITH AMINO GROUPS

#26
20210170341
2021-06-10

Method for controlling slime in reverse osmosis membrane apparatus

#27
20210146312
2021-05-20

PROCESS FOR CLEANING A MEMBRANE COMPRISING DRYING THE MEMBRANE

#28
20210069653
2021-03-11

Membrane disinfectant

#29
20210040424
2021-02-11

Method for manufacturing brewed alcoholic beverage using porous membrane

#30
20210001282
2021-01-07

Composite semipermeable membrane and composite semipermeable membrane element

#31
20200407244
2020-12-31

METHODS FOR PRODUCING A FOOD PRODUCT

#32
20200338503
2020-10-29

Method of regenerating member and method of seawater desalination

#33
20200308506
2020-10-01

Cleaning composition

#34
20200289988
2020-09-17

Filtering membrane cleaning method

#35
20200164316
2020-05-28

Membrane cleaning solution and method of accelerated membrane cleaning using the same

#36
20190364902
2019-12-05

Method for producing stabilized hypobromous acid composition, stabilized hypobromous acid composition, and slime inhibition method for separation membrane

#37
20190275468
2019-09-12

Compositions and methods for the reduction of biofilm and spores from membranes

#38
20190224627
2019-07-25

Method for permeate flow path sanitization in a reverse osmosis system

#39
20190184344
2019-06-20

Systems for water extraction for up-concentration of organic solutes

#40
20190168166
2019-06-06

Cleaning method of a water-filtration system under operation

#41
20190083933
2019-03-21

Biocide composition and method

#42
20190054428
2019-02-21

Functionalized Ceramic Membranes for the Separation of Organics from Raw Water and Methods of Filtration Using Functionalized Ceramic Membranes

#43
20180361323
2018-12-20

Processing systems for produced water and methods for recovering organic compounds from the produced water

#44
20180304203
2018-10-25

CERAMIC MEMBRANE SYSTEM FOR SILICA REMOVAL AND RELATED METHODS

#45
20180282186
2018-10-04

Method for operating reverse-osmosis membrane treatment system

#46
20180280888
2018-10-04

REVERSE OSMOSIS TREATMENT APPARATUS AND REVERSE OSMOSIS TREATMENT METHOD

#47
20180251386
2018-09-06

Subsea equipment cleaning system and method

#48
20180250638
2018-09-06

Filtration system and method for chemical rinsing a filtration system

#49
20180169585
2018-06-21

AGENT, LIQUID, AND METHOD FOR CLEANING REVERSE OSMOSIS MEMBRANE

#50
20180104652
2018-04-19

REVERSE OSMOSIS MEMBRANE CLEANING METHOD AND REVERSE OSMOSIS MEMBRANE CLEANING APPARATUS

#51
20180099889
2018-04-12

Scale removal system

#52
20180036675
2018-02-08

Continuous liquid desiccant dehumidification system

#53
20180008935
2018-01-11

Comprehensive evaluation method for performance of contaminated flat membranes

#54
20170296974
2017-10-19

Method of cleaning microfiltration and ultrafiltration membranes

#55
20170275571
2017-09-28

Alkaline cleaning liquid comprising urea and/or biuret, and cleaning method for reverse osmosis membrane

#56
20170225128
2017-08-10

FUNCTIONALIZED CERAMIC MEMBRANES FOR THE SEPARATION OF ORGANICS FROM RAW WATER AND METHODS OF FILTRATION USING FUNCTIONALIZED CERAMIC MEMBRANES

#57
20170182465
2017-06-29

WATER TREATMENT METHOD AND WATER TREATMENT APPARATUS EACH USING MEMBRANE

#58
20170113187
2017-04-27

METHOD FOR OPERATING SEPARATION MEMBRANE MODULE

#59
20170058369
2017-03-02

Method of producing sugar solution

#60
20170044029
2017-02-16

Filtration treatment system and filtration treatment method

#61
20160304372
2016-10-20

SUBSURFACE WATER TREATMENT SYSTEM

#62
20160304371
2016-10-20

Subsurface water purification method

#63
20160271565
2016-09-22

Composition and method for biofouling inhibition of membrane separation device

#64
20160198721
2016-07-14

Method for producing stabilized hypobromous acid composition, stabilized hypobromous acid composition, and slime inhibition method for separation membrane

#65
20160194222
2016-07-07

RO installation for flushing solutions

#66
20160185630
2016-06-30

Multifunctional method for membrane protection and biofouling control

#67
20160101389
2016-04-14

METHOD OF PERFORMING A CLEANING OPERATION ON A WATER FILTRATION DEVICE

#68
20160045872
2016-02-18

FILTRATION APPARATUS AND METHOD FOR CLEANING FILTRATION MODULE

#69
20160016127
2016-01-21

Water extraction system containing a membrane including an active layer having a cross-linked aromatic polyamide thin film

#70
20150343386
2015-12-03

Compositions and methods of cleaning polyvinyl pyrrolidone-based hemodialysis filtration membrane assemblies

#71
20150300231
2015-10-22

Membrane-based exhaust gas scrubbing method and system

#72
20150265974
2015-09-24

WASHING DEVICE FOR POROUS HOLLOW FIBER MEMBRANES, AND POROUS HOLLOW FIBER MEMBRANE PRODUCTION METHOD

#73
20150203927
2015-07-23

Method of producing sugar solution

#74
20150191801
2015-07-09

Method of producing sugar solution

#75
20150087877
2015-03-26

Enhancing flux of a microporous hollow fiber membrane

#76
20150050598
2015-02-19

Methods for cleaning membranes used for filtering chemicals

#77
20150007719
2015-01-08

Method for treating impurities contained in exhaust gases of ships, ship with exhaust gas scrubber, and purification unit

#78
20140367334
2014-12-18

Method for preventing microbial growth on a filtration membrane

#79
20140360937
2014-12-11

Reverse osmosis treatment device and method for cleaning reverse osmosis treatment device

#80
20140291241
2014-10-02

Functionalized ceramic membranes for the separation of organics from raw water and methods of filtration using functionalized ceramic membranes

#81
20140262253
2014-09-18

Process for recovering oil and treating resulting produced water with ceramic membranes

#82
20140124442
2014-05-08

Method of membrane separation

#83
20130299426
2013-11-14

Process for enhanced total organic carbon removal while maintaining optimum membrane filter performance

#84
20120228221
2012-09-13

METHOD OF CLEANING FILTRATION MEMBRANE

#85
20120145630
2012-06-14

Fresh water production method

#86
20120094361
2012-04-19

Method of Separation of Algal Biomass from Aqueous or Marine Culture

#87
20120090641
2012-04-19

Method for cleaning filtering membrane

#88
20110284470
2011-11-24

Method for regenerating filter

#89
20110114561
2011-05-19

SPIRAL TYPE MEMBRANE FILTERING DEVICE AND MOUNTING MEMBER, AND MEMBRANE FILTERING DEVICE MANAGING SYSTEM AND MEMBRANE FILTERING DEVICE MANAGING METHOD USING THE SAME

#90
20110114557
2011-05-19

CLEANING IN MEMBRANE FILTRATION SYSTEMS

#91
20110062078
2011-03-17

MEMBRANE REGENERATION

#92
20110005997
2011-01-13

Hybrid TFC RO membranes with nitrogen additives

#93
20100300970
2010-12-02

Process for enhanced total organic carbon removal while maintaining optimum membrane filter performance

#94
20100276365
2010-11-04

System and method for removing organic contaminants from water

#95
20100248335
2010-09-30

METHOD AND APPARATUS FOR TREATMENT OF ORGANIC WASTE

#96
20100193436
2010-08-05

Pre-treatment reverse osmosis water recovery method for brine retentate metals removal

#97
20100187127
2010-07-29

Membrane restoration

#98
20100140170
2010-06-10

Filter cleaning method

#99
20100136238
2010-06-03

METHOD OF ENHANCING REJECTION OF PERMEATION MEMBRANE, REJECTION-ENHANCED MEMBRANE, METHOD AND APPARATUS FOR TREATMENT BY PERMEATION MEMBRANE

#100
20100133184
2010-06-03

CLEANING AGENT FOR SEPARATION MEMBRANE, PROCESS FOR PREPARING THE CLEANING AGENT, AND CLEANING METHOD

#101
20100126935
2010-05-27

Method of membrane separation and membrane separation apparatus

#102
20100018921
2010-01-28

Reverse osmosis water recover method

#103
20090308745
2009-12-17

Process for enhanced total organic carbon removal while maintaining optimum membrane filter performance

#104
20090101578
2009-04-23

Process for enhanced total organic carbon removal while maintaining optimum membrane filter performance

#105
20090066316
2009-03-12

Electrokinetic Method for Determining the Electrostatic Charge State of a Porous Membrane During Filtering and the Use Thereof

#106
20090050563
2009-02-26

Treatment method for reverse osmosis filtration systems

#107
20080203016
2008-08-28

Cleaning in membrane filtration systems

#108
20080179250
2008-07-31

EXTENDED-LIFE WATER SOFTENING SYSTEM, APPARATUS AND METHOD

#109
20080179244
2008-07-31

DRAIN-FLUSH SEQUENCE AND SYSTEM FOR FILTER MODULE

#110
20080169006
2008-07-17

Method of cleaning fouled or scaled membranes

#111
20080149570
2008-06-26

METHOD OF CLEANING AND MAINTAINING A MEMBRANE USED WITH AN AQUEOUS STREAM

#112
20080093282
2008-04-24

Water treatment system

#113
20070289924
2007-12-20

Rejuvenation of reverse osmosis membrane

#114
20070215474
2007-09-20

Electrodialysis system and process

#115
20070210002
2007-09-13

CHEMICAL AND PROCESS FOR CLEANING MEMBRANES

#116
20070187326
2007-08-16

Membrane filter cleaning method and installation for implementing same

#117
20070102347
2007-05-10

Temperature-responsive membrane, temperature-responsive membrane module, and membrane filtration system in which the same are used

#118
20070039883
2007-02-22

Water separation system

#119
20060273038
2006-12-07

Chemical cleaning for membranes

#120
20060243661
2006-11-02

System for treating wastewater containing organic compounds

#121
20060213165
2006-09-28

Ceramic filter

#122
20060108275
2006-05-25

Membrane filtration assemblies for sand filter retrofit

#123
20060060529
2006-03-23

Chemical cleaning backwash for normally immersed membranes

#124
20050178408
2005-08-18

Process for cleaning filters

#125
20050109694
2005-05-26

Method and system for treating wastewater containing organic compounds

#126
20050061741
2005-03-24

Method for treating reverse osmosis membranes with chlorine dioxide

#127
20050000894
2005-01-06

Cleaning efficiency testing method and apparatus for a filter in a filtering system

#128
15573232
2020-10-27

Filter device and washing method therefor