ClassID:

30847

B01D2321/164 - CPC Classification

Classification description:

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

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

FILTER CLEANING METHODS AND APPARATUSES

#2
20250297191
2025-09-25

CLEANING COMPOSITION

#3
20240390859
2024-11-28

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

#4
20240157305
2024-05-16

SELF-CLEANING DECENTRALIZED WATER TREATMENT UNIT

#5
20240076576
2024-03-07

CLEANING COMPOSITION

#6
20230398492
2023-12-14

Device and method for protecting drinking water from microorganisms

#7
20230330601
2023-10-19

METHODS FOR TREATING POROUS MEMBRANES

#8
20230132622
2023-05-04

GREYWATER TREATMENT SYSTEM

#9
20220176324
2022-06-09

Use of extended surfactants in process membrane cleaning

#10
20220025296
2022-01-27

Cleaning composition

#11
20210370234
2021-12-02

System for treating tetraalkylammonium hydroxide-containing liquid and method for treating same

#12
20210146312
2021-05-20

PROCESS FOR CLEANING A MEMBRANE COMPRISING DRYING THE MEMBRANE

#13
20210040424
2021-02-11

Method for manufacturing brewed alcoholic beverage using porous membrane

#14
20200353420
2020-11-12

Method of filtration using porous membranes

#15
20200308506
2020-10-01

Cleaning composition

#16
20200070097
2020-03-05

METHOD OF WASHING HOLLOW FIBER MEMBRANE DEVICE, ULTRAFILTRATION MEMBRANE DEVICE, ULTRAPURE WATER PRODUCTION SYSTEM, AND WASHING DEVICE FOR HOLLOW FIBER MEMBRANE DEVICE

#17
20190381459
2019-12-19

Automated modular filtration system

#18
20190224627
2019-07-25

Method for permeate flow path sanitization in a reverse osmosis system

#19
20190168166
2019-06-06

Cleaning method of a water-filtration system under operation

#20
20190118145
2019-04-25

METHOD FOR FILTERING MICROBIAL CULTURE SOLUTION USING MEMBRANE MODULE

#21
20190099720
2019-04-04

Use of extended surfactants in process membrane cleaning

#22
20190099717
2019-04-04

Single-pass filtration systems and processes

#23
20190099716
2019-04-04

Single-pass filtration systems and processes

#24
20190091632
2019-03-28

Method for operating membrane separation device with halt process

#25
20180251386
2018-09-06

Subsea equipment cleaning system and method

#26
20180250638
2018-09-06

Filtration system and method for chemical rinsing a filtration system

#27
20180200678
2018-07-19

AGENT, LIQUID, AND METHOD FOR CLEANING REVERSE OSMOSIS MEMBRANE

#28
20170275571
2017-09-28

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

#29
20170225128
2017-08-10

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

#30
20170216777
2017-08-03

Method and apparatus for cleaning filter membrane, and water treatment system

#31
20170058369
2017-03-02

Method of producing sugar solution

#32
20170044029
2017-02-16

Filtration treatment system and filtration treatment method

#33
20160045872
2016-02-18

FILTRATION APPARATUS AND METHOD FOR CLEANING FILTRATION MODULE

#34
20150360180
2015-12-17

Single-pass filtration systems and processes

#35
20150343386
2015-12-03

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

#36
20150300231
2015-10-22

Membrane-based exhaust gas scrubbing method and system

#37
20150293094
2015-10-15

Methods and systems useful for foodborne pathogen detection

#38
20150203927
2015-07-23

Method of producing sugar solution

#39
20150087877
2015-03-26

Enhancing flux of a microporous hollow fiber membrane

#40
20150050598
2015-02-19

Methods for cleaning membranes used for filtering chemicals

#41
20150048027
2015-02-19

Method for high efficiency reverse osmosis operation

#42
20150045276
2015-02-12

Agent and method for cleaning permeable membranes

#43
20140360937
2014-12-11

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

#44
20140262253
2014-09-18

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

#45
20140110339
2014-04-24

Method for high efficiency reverse osmosis operation

#46
20130299426
2013-11-14

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

#47
20130062282
2013-03-14

METHOD FOR HIGH EFFICIENCY REVERSE OSMOSIS OPERATION

#48
20120228221
2012-09-13

METHOD OF CLEANING FILTRATION MEMBRANE

#49
20120228219
2012-09-13

Spiral wound membrane element and treatment of SAGD produced water or other high temperature alkaline fluids

#50
20120145630
2012-06-14

Fresh water production method

#51
20120094361
2012-04-19

Method of Separation of Algal Biomass from Aqueous or Marine Culture

#52
20120042575
2012-02-23

CMP SLURRY RECYCLING SYSTEM AND METHODS

#53
20110284470
2011-11-24

Method for regenerating filter

#54
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

#55
20110114557
2011-05-19

CLEANING IN MEMBRANE FILTRATION SYSTEMS

#56
20110094963
2011-04-28

MEMBRANE SEPARATION METHOD AND MEMBRANE SEPARATION DEVICE

#57
20110067737
2011-03-24

Method and apparatus for cleaning a film seperating device

#58
20110062078
2011-03-17

MEMBRANE REGENERATION

#59
20100282693
2010-11-11

FILTRATION MEMBRANES

#60
20100248335
2010-09-30

METHOD AND APPARATUS FOR TREATMENT OF ORGANIC WASTE

#61
20100136238
2010-06-03

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

#62
20100047156
2010-02-25

MULTIPLE STAGE REVERSE OSMOSIS METHOD FOR REMOVING BORON FROM A SALINATED FLUID

#63
20090308745
2009-12-17

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

#64
20080264454
2008-10-30

Method for cleaning hollow tubing and fibers

#65
20080203016
2008-08-28

Cleaning in membrane filtration systems

#66
20080179244
2008-07-31

DRAIN-FLUSH SEQUENCE AND SYSTEM FOR FILTER MODULE

#67
20080169006
2008-07-17

Method of cleaning fouled or scaled membranes

#68
20070187326
2007-08-16

Membrane filter cleaning method and installation for implementing same

#69
20070034571
2007-02-15

High recovery reverse osmosis process and apparatus

#70
20070015680
2007-01-18

Detergent for washing a selectively permeable membrane and method of washing

#71
20060266705
2006-11-30

Refreshing chemicals during membrane cleaning

#72
20060231491
2006-10-19

High purity water produced by reverse osmosis

#73
20060201342
2006-09-14

Use of porous metal membrane for treating liquid foods

#74
20060108275
2006-05-25

Membrane filtration assemblies for sand filter retrofit

#75
20060060529
2006-03-23

Chemical cleaning backwash for normally immersed membranes

#76
20050184008
2005-08-25

Methods for treating membranes and separation facilities and membrane treatment composition

#77
20050178408
2005-08-18

Process for cleaning filters

#78
20050150831
2005-07-14

Method for cleaning hollow tubing and fibers

#79
20050061741
2005-03-24

Method for treating reverse osmosis membranes with chlorine dioxide

#80
20050056600
2005-03-17

Nanofilter system and method of use

#81
20050000894
2005-01-06

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

#82
19396547
2026-05-12

Method of cleaning a fouled reverse osmosis membrane

#83
15573232
2020-10-27

Filter device and washing method therefor