ClassID:

30869

B01D2321/28 - CPC Classification

Classification description:

Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling by soaking or impregnating

Recent Application in this class:
#1
20260091356
2026-04-02

SYSTEMS AND METHODS FOR EXTENDING WATER FILTRATION MEMBRANE LIFETIME IN SELF-MEDIATED SALTLESS WHOLE HOME WATER TREATMENT SYSTEMS

#2
20260014522
2026-01-15

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

#3
20250387756
2025-12-25

CONTROL METHOD FOR RO SYSTEM, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM

#4
20250177924
2025-06-05

IN-SITU REPAIR METHOD FOR THE SURFACE OF PA MEMBRANE AFTER THE DESTRUCTION OF OXIDIZING SUBSTANCES

#5
20250145496
2025-05-08

HYBRID FILTER AND CHEMICAL CLEANING ASSEMBLY AND METHOD

#6
20240261734
2024-08-08

MEMBRANE FILTERS FOR WATER AND WASTEWATER TREATMENT AND METHOD OF PRODUCING THE SAME

#7
20240198292
2024-06-20

METHOD FOR PRESERVING COMPOSITE SEMIPERMEABLE MEMBRANE, PRESERVATION SOLUTION, AND SPIRAL MEMBRANE ELEMENT

#8
20220401944
2022-12-22

Method for unblocking pores in a selective catalytic reduction catalyst

#9
20220266201
2022-08-25

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

#10
20210354079
2021-11-18

Replenishing liquid material to a membrane within a multi-module system

#11
20210197127
2021-07-01

Method for cleaning membrane

#12
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

#13
20190275468
2019-09-12

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

#14
20180243697
2018-08-30

REPLENISHING LIQUID MATERIAL TO MEMBRANE

#15
20180169586
2018-06-21

Dynamic coating of MF/UF membranes for fouling mitigation

#16
20180043345
2018-02-15

Ion-exchange membrane with multi-layered support substrate

#17
20160101389
2016-04-14

METHOD OF PERFORMING A CLEANING OPERATION ON A WATER FILTRATION DEVICE

#18
20160002489
2016-01-07

Development of zwitterionic coatings that confer ultra anti-biofouling properties to commercial reverse osmosis membranes

#19
20150320921
2015-11-12

Method for sterilizing blood purifier and blood purifier package

#20
20150224451
2015-08-13

Ceramic separation membrane structure, and repair method thereof

#21
20140245884
2014-09-04

Replenishing liquid material to membrane

#22
20120168374
2012-07-05

CLEANING PROCESS FOR IMMERSION-TYPE SEPARATING MEMBRANE DEVICE, AND CLEANING SYSTEM FOR IMMERSION-TYPE SEPARATING MEMBRANE DEVICE

#23
20110067737
2011-03-24

Method and apparatus for cleaning a film seperating device

#24
20100000942
2010-01-07

MONOPERSULFATE TREATMENT OF MEMBRANES

#25
20090314712
2009-12-24

MEMBRANE FILTRATION OF A PRODUCT

#26
20090229632
2009-09-17

Apparatus and method for cleaning pipelines, tubing and membranes using two-phase flow

#27
20090124844
2009-05-14

METHOD OF DETOXIFICATION TREATMENT FOR FILTER WITH PERSISTENT SUBSTANCE ADHERING THERETO

#28
20090032466
2009-02-05

Agent for increasing rejection with a permeable membrane, process for increasing the rejection, permeable membrane and process for water treatment

#29
20080271758
2008-11-06

Method of cleaning fouled and/or scaled membranes

#30
20080087599
2008-04-17

Method for sterilizing blood purifier and blood purifier package

#31
20070210002
2007-09-13

CHEMICAL AND PROCESS FOR CLEANING MEMBRANES

#32
20060266705
2006-11-30

Refreshing chemicals during membrane cleaning

#33
20050077243
2005-04-14

Reverse osmosis membrane and process

#34
20050000894
2005-01-06

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