ClassID:

29355

B01D37/02 - CPC Classification

Classification description:

Processes of filtration Precoating the filter medium; Addition of filter aids to the liquid being filtered

Sub-classes:
Recent Application in this class:
#1
20250288983
2025-09-18

APPARATUS AND METHOD FOR COATING SUBSTRATES WITH WASHCOATS

#2
20250235805
2025-07-24

LUBRICANT FOR FILTRATION CONTAINING ONIUM IONS

#3
20250179459
2025-06-05

FILTER AID, METHOD OF FILTRATION TREATMENT, AND METHOD OF MANUFACTURING CELLULASE

#4
20250178942
2025-06-05

COMPOSITIONS AND METHODS FOR TREATING AND RECLAIMING PAINT FLUSH WASTE

#5
20250116248
2025-04-10

ELECTRONIC FILTER DETECTION FEATURE FOR LIQUID FILTRATION SYSTEMS

#6
20240325950
2024-10-03

Edible Oil Filtration Method

#7
20240261852
2024-08-08

APPARATUS AND METHODS FOR FILTERING METALS

#8
20240261754
2024-08-08

DIATOMACEOUS EARTH COMPOSITION WITH A LOW ENDOTOXIN CONTENT

#9
20240252963
2024-08-01

LIQUID COMPOSITION FOR PURIFICATION OF OIL

#10
20240123382
2024-04-18

FILTER

#11
20240091679
2024-03-21

MECHANICAL DEMOISTURIZING OF PARTIALLY-DECOMPOSED ORGANIC MATERIAL

#12
20240091678
2024-03-21

MECHANICAL DEMOISTURIZING OF PARTIALLY-DECOMPOSED ORGANIC MATERIAL

#13
20240001268
2024-01-04

A method and a system for filtering a suspension

#14
20230381695
2023-11-30

SYSTEMS, METHODS, AND FILTER MEDIA FOR FILTERING MOLTEN ALUMINUM AND ALUMINUM ALLOYS

#15
20230358193
2023-11-09

Electronic filter detection feature for liquid filtration systems

#16
20230277962
2023-09-07

FIBER DISCFILTER WITH MEANS OF FORMING GROOVES ON THE SURFACE OF FILTER CLOTHS

#17
20230211260
2023-07-06

FLUID FILTRATION SYSTEM WITH SINGLE USE FILTER AND METHOD OF USING SAME FOR AUTOMATED FILTER CONDITIONING

#18
20230149836
2023-05-18

Regenerative Media Filter Cleaning Apparatus and Method

#19
20230106698
2023-04-06

System for treatment and disinfection of industrial effluents

#20
20230087550
2023-03-23

Apparatus and methods for filtering metals

#21
20230086975
2023-03-23

EQUIPMENT FOR THE FILTRATION OF A SUSPENSION USING A ROTARY PRECOAT FILTER

#22
20220401863
2022-12-22

PROCESS FOR THE REMOVAL OF PARTICULATE MATTER FROM AN AQUEOUS STREAM

#23
20220395807
2022-12-15

Diatomaceous earth composition containing salt water

#24
20220362698
2022-11-17

APPARATUS AND METHODS FOR DRY POWDER COATING A FILTER

#25
20220324896
2022-10-13

Method for separation and purification of n-acetylglucosamine

#26
20220291097
2022-09-15

Methods and Compositions for Sample Filtration

#27
20220249992
2022-08-11

DEWATERING AIDS

#28
20220227651
2022-07-21

COMPOSITIONS AND METHODS FOR TREATING AND RECLAIMING PAINT FLUSH WASTE

#29
20220193651
2022-06-23

APPARATUS AND METHOD FOR COATING SUBSTRATES WITH WASHCOATS

#30
20220143537
2022-05-12

METHOD AND APPARATUS FOR ENHANCED SEPARATION AND REMOVAL OF CONTAMINANTS AND IRRADIATED PARTICULATES FROM FLUIDS

#31
20220143534
2022-05-12

Liquid filtration system

#32
20220136471
2022-05-05

Electronic filter detection feature for liquid filtration systems

#33
20220062802
2022-03-03

REGENERATIVE MEDIA FILTRATION

#34
20220040612
2022-02-10

Electromagnetic priming of molten metal filters

#35
20220032218
2022-02-03

Liquid Purification System

#36
20220016554
2022-01-20

Method and system for purification of contaminated oil

#37
20210340316
2021-11-04

Method for separating PHA and PHA prepared therefrom

#38
20210238637
2021-08-05

METHOD FOR PRODUCING COENZYME Q10

#39
20210229006
2021-07-29

REGENERATIVE MEDIA FILTRATION

#40
20210205843
2021-07-08

Acid-reducing beverage filter and method of producing same

#41
20210199079
2021-07-01

Electronic filter detection feature for liquid filtration systems

#42
20210146308
2021-05-20

Process for the purification of complex biocompositions

#43
20210086111
2021-03-25

Regenerative media filtration

#44
20210069670
2021-03-11

Acid-treated filter aid blend

#45
20210052996
2021-02-25

Regenerative media filtration

#46
20210039023
2021-02-11

REGENERATIVE MEDIA FILTRATION

#47
20200262728
2020-08-20

Method for treatment and disinfection of industrial effluents

#48
20200261883
2020-08-20

Diatomaceous earth composition with a low endotoxin content

#49
20200238195
2020-07-30

Processing of filtered rolling oil and filtering agents

#50
20200222837
2020-07-16

Filter aids

#51
20200206716
2020-07-02

Method for producing functionally improved carbolime

#52
20200206665
2020-07-02

HIGH DENSITY PERLITE FILTER AID

#53
20200171417
2020-06-04

Method and system for treating aqueous fluid resulting from fluoropolymer production step

#54
20200122195
2020-04-23

Acid-reducing beverage filter and method of producing same

#55
20200070074
2020-03-05

Polymer coating for selective separation of hydrophobic particles in aqueous slurry

#56
20200056144
2020-02-20

Cell culture clarification

#57
20200030876
2020-01-30

Apparatus and methods for filtering metals

#58
20200016521
2020-01-16

Filter unit pretreatment method, treatment liquid supply apparatus, filter unit heating apparatus, and treatment liquid supply passage pretreatment method

#59
20190315791
2019-10-17

Method for purifying allulose conversion reaction product

#60
20190291028
2019-09-26

Regenerative media filtration

#61
20190274328
2019-09-12

Acid-reducing beverage filter and method of producing same

#62
20190270067
2019-09-05

COMPOSITE FILTER AIDS AND METHODS OF USING COMPOSITE FILTER AIDS

#63
20190232204
2019-08-01

Device for treating an effluent and method for treating an effluent

#64
20190201914
2019-07-04

Method and system for releasing mineral from synthetic bubbles and beads

#65
20190160421
2019-05-30

Exhaust gas treatment system

#66
20190120157
2019-04-25

Electronic filter detection feature for liquid filtration systems

#67
20190063027
2019-02-28

Mobile microalgae harvesting

#68
20190060810
2019-02-28

Cooking oil treatment filtration aid and method

#69
20190054400
2019-02-21

Continuous rotary plate filter and methods of use thereof

#70
20190039043
2019-02-07

Acid-treated filter aid blend

#71
20180353885
2018-12-13

FILTER FOR SULFUR COMPOUNDS

#72
20180318740
2018-11-08

Filtration method and production process of cellulose nanofiber dispersion

#73
20180236383
2018-08-23

FILTER AIDS FOR BIODIESEL AND EDIBLE OIL FILTRATION AND METHODS AND USES OF THE FILTERING AIDS

#74
20180200730
2018-07-19

Mineral separation using sized-, weight- or magnetic-based polymer bubbles or beads

#75
20180185816
2018-07-05

HIGH PERMEABILITY COMPOSITE MAGNESIUM SILICATE FILTER AIDS

#76
20180134651
2018-05-17

METHOD OF PURIFYING TEREPHTHALATE BASED ESTER COMPOUNDS

#77
20180126356
2018-05-10

CHILL-PROOFING COMPOSITE FILTER AIR AND RELATED METHODS

#78
20180080295
2018-03-22

Removal of fine solids from oilfield fluids

#79
20180036658
2018-02-08

Suspended-matter removing method utilizing biofilm and suspended-matter removing apparatus utilizing biofilm

#80
20180036657
2018-02-08

SUSPENDED-MATTER REMOVING METHOD AND SUSPENDED-MATTER REMOVING APPARATUS

#81
20180028946
2018-02-01

REGENERATION METHOD FOR FILTRATION APPARATUS, FILTRATION APPARATUS AND WATER TREATMENT APPARATUS

#82
20170368486
2017-12-28

Opaline biogenic silica/expanded perlite composite products

#83
20170368485
2017-12-28

METHOD AND INSTALLATION FOR PRE-TREATMENT EMPLOYING A FILTER CAKE

#84
20170341140
2017-11-30

Apparatus and methods for filtering metals

#85
20170296952
2017-10-19

METHOD FOR PRE-WETTING PP FILTER FOR FILTERING SLURRY AND PP FILTER PACKAGE

#86
20170282157
2017-10-05

PROCESS FOR REGENERATING FILTER AID USED IN A WINTERIZATION PROCESS

#87
20170282103
2017-10-05

Diatomaceous earth filter cleaner

#88
20170266595
2017-09-21

Filtering element, filtering equipment and water circulation cleaning system

#89
20170173631
2017-06-22

Apparatus for treating a wellbore screen and method

#90
20170136427
2017-05-18

Rapid High Solids Separation

#91
20160296866
2016-10-13

Ultra fast oleophobic-hydrophilic switching surfaces

#92
20160273471
2016-09-22

Electronic filter detection feature for liquid filtration systems

#93
20160236124
2016-08-18

Filter unit pretreatment method, treatment liquid supply apparatus, filter unit heating apparatus, and treatment liquid supply passage pretreatment method

#94
20160220932
2016-08-04

FILTER AID AND FILTER LAYER

#95
20160031723
2016-02-04

WATER FILTRATION DEVICES AND METHODS

#96
20150367267
2015-12-24

FILTERING METHODS FOR FLUIDS AND DEVICES FOR CARRYING OUT SAID METHODS

#97
20150322543
2015-11-12

Apparatus and method for priming a molten metal filter

#98
20150290566
2015-10-15

Method for removing the precoat layer of a rotary filter

#99
20150240185
2015-08-27

Process for regenerating filter aid used in a winterization process

#100
20150209799
2015-07-30

Mineral recovery in tailings using functionalized polymers

#101
20150191383
2015-07-09

SUBMERGED FILTRATION SYSTEM AND WASTEWATER TREATMENT METHOD

#102
20150174515
2015-06-25

Diatomaceous earth filter apparatus and method

#103
20140377152
2014-12-25

Copper recovery apparatus and copper recovery method

#104
20140356533
2014-12-04

Apparatus for treating a wellbore screen and method

#105
20140231364
2014-08-21

Method for preparing a precoat on the surface of the filter medium of a polishing filter, polishing filter and use of a polishing filter

#106
20140227520
2014-08-14

Synthetic beads/bubbles functionalized with molecules for attracting and attaching to mineral particles of interest

#107
20140202959
2014-07-24

Synthetic bubbles or beads having hydrophobic surface

#108
20140199217
2014-07-17

Mineral separation using functionalized filters and membranes

#109
20140197077
2014-07-17

Method and system for releasing mineral from synthetic bubbles and beads

#110
20140190873
2014-07-10

Techniques for transporting synthetic beads or bubbles in a flotation cell or column

#111
20140183104
2014-07-03

Mineral separation using sized-, weight- or magnetic-based polymer bubbles or beads

#112
20140166585
2014-06-19

Flotation separation using lightweight synthetic beads or bubbles

#113
20140150335
2014-06-05

Additive dispersing filter and method

#114
20140138324
2014-05-22

Mineral separation using functionalized membranes

#115
20130168330
2013-07-04

Process for filtration of fluids and filter apparatus for performing the process

#116
20130072631
2013-03-21

METHOD FOR SEPARATING AN ORGANIC PHASE FROM AN ELECTROLYTE-CONTAINING AQUEOUS AND ORGANIC PHASE

#117
20120234767
2012-09-20

Copper recovery apparatus and copper recovery method

#118
20120061303
2012-03-15

PRECOAT FILTER AND FILTERING ELEMENTS FOR USE IN A FILTER OF THIS TYPE

#119
20110001068
2011-01-06

HOSE VALVE FOR FEEDING FINE GRAINED MATERIAL

#120
20110000834
2011-01-06

System for reception and transport of lime mud from a white liquor filter

#121
20100300987
2010-12-02

Filtration apparatus and filtration method

#122
20100163496
2010-07-01

METHOD AND APPARATUS FOR REMOVAL OF SOOT FROM LUBRICATING OIL

#123
20100068360
2010-03-18

METHOD OF OPERATING A CONTAINER FILLING PLANT FOR FILLING CONTAINERS WITH FILTERED LIQUID, SUCH AS BEER

#124
20100044289
2010-02-25

Integrated paper comprising fibrillated fibers and active agents immobilized therein

#125
20100032372
2010-02-11

USE OF A PRIMARY LIQUID FILTRATION/STABILIZATION INSTALLATION FOR TRIPLE PURPOSE

#126
20090101598
2009-04-23

Methods for removing suspended solids from a gasification process stream

#127
20090078628
2009-03-26

Pool filtration system

#128
20080314832
2008-12-25

METHOD OF FILTERING

#129
20080185343
2008-08-07

Method for separating an organic phase from an electrolyte-containing aqueous and organic phase

#130
20080099408
2008-05-01

Diatomaceous earth filter apparatus and method

#131
20070298064
2007-12-27

Structures that inhibit microbial growth

#132
20060266687
2006-11-30

Filtration apparatus

#133
20060266686
2006-11-30

Filtration apparatus

#134
20060266685
2006-11-30

Filtration apparatus

#135
20060070962
2006-04-06

Filtering method and filtering device

#136
20050051502
2005-03-10

Method for using auxiliary filtering agents for filtration purposes

#137
20050051487
2005-03-10

Fiber-fiber composites

#138
20050040117
2005-02-24

Method for continuously filtering raw brine for use in chlor-alkali electrolysis

#139
20050027021
2005-02-03

Solid/liquid separation system for multiphase converters

#140
17135984
2021-10-26

Method for efficiently producing PHA

#141
16685033
2020-12-01

Regenerative media filtration

#142
16668415
2020-10-27

Regenerative media filtration

#143
16543747
2020-10-27

Regenerative media filtration