ClassID:

30663

B01D2267/40 - CPC Classification

Classification description:

Multiple filter elements specially adapted for separating dispersed particles from gases or vapours Different types of filters

Recent Application in this class:
#1
20260145111
2026-05-28

AIR SCRUBBER

#2
20260097348
2026-04-09

FLAT-FILTER FILTER ELEMENT HAVING AT LEAST TWO FILTER-MATERIAL BODIES, FILTER SYSTEM, AND USE OF A FLAT-FILTER FILTER ELEMENT

#3
20260097347
2026-04-09

FLAT-FILTER FILTER ELEMENT HAVING AT LEAST TWO FILTER-MATERIAL BODIES, FILTER SYSTEM, AND USE OF A FLAT-FILTER FILTER ELEMENT

#4
20260097346
2026-04-09

REUSABLE MODULAR MULTI-PANEL AIR FILTER

#5
20260084251
2026-03-26

VACUUM FUNCTION FUME EXTRACTOR ADDITION

#6
20260070067
2026-03-12

ELECTRONICALLY ENHANCED AIR CLEANER WITH MULTIPLE FILTERS AND ENERGY GRIDS

#7
20260061517
2026-03-05

EXTRACTION AND FILTRATION OF POLLUTED AIR IN A LASER PRINTING SYSTEM FOR MICROSCOPE SLIDES

#8
20250375078
2025-12-11

VACUUM CLEANER

#9
20250296020
2025-09-25

MODULAR FILTER SYSTEM

#10
20250161853
2025-05-22

AIR CLEANER ASSEMBLIES AND METHODS OF USE

#11
20250141034
2025-05-01

TRACTION BATTERY PACK FILTERING SYSTEM AND FILTERING METHOD

#12
20250121313
2025-04-17

FILTER CARTRIDGES; AIR CLEANER ASSEMBLIES; HOUSINGS; FEATURES; COMPONENTS; AND, METHODS

#13
20250099891
2025-03-27

FILTER CARTRIDGES; AIR CLEANER ASSEMBLIES; HOUSING; FEATURES; COMPONENTS; AND METHODS

#14
20250025817
2025-01-23

FILTER UNIT AND METHOD FOR MANUFACTURING THE SAME

#15
20240416270
2024-12-19

FILTER ELEMENT, CARTRIDGE AND FILTER SYSTEM

#16
20240390834
2024-11-28

SYSTEM, METHOD, AND APPARATUS FOR AMELIORATING DEPOSITS IN SELECTIVE CATALYTIC REDUCTION SYSTEMS FOR THE REDUCTION OF NITROGEN OXIDE EMISSIONS IN STEAM METHANE REFORMERS

#17
20240390832
2024-11-28

AIR FILTER WITH FILTERED CAP

#18
20240269601
2024-08-15

HOT GAS FILTRATION WITH ENHANCED COMPARTMENTAL FLOW DISTRIBUTION VIA DUAL FILTER CONFIGURATIONS

#19
20240156318
2024-05-16

VACUUM CLEANER

#20
20240138638
2024-05-02

VACUUM CLEANING DEVICE

#21
20240082771
2024-03-14

REDUCED-SIZE DEVICE FOR AIR PURIFICATION

#22
20240058735
2024-02-22

Paint Apparatus and Filter Module

#23
20240009612
2024-01-11

MEDICAL FILTRATION DEVICE AND SYSTEMS

#24
20230390682
2023-12-07

Air cleaner assemblies and methods of use

#25
20230337876
2023-10-26

Floor cleaner

#26
20230324058
2023-10-12

IN LINE AIR FILTRATION AND PURIFICATION APPARATUS

#27
20230210330
2023-07-06

LID ARRANGEMENT FOR A DUST EXTRACTOR COMPRISING A DUST CYCLONE CONTAINER AND A FINE FILTER SECTION

#28
20230173422
2023-06-08

STACKABLE AIR TREATMENT DEVICE

#29
20230099596
2023-03-30

SYSTEM AND METHOD FOR A WEARABLE AIR FILTRATION DEVICE

#30
20230066089
2023-03-02

Dust mitigation system

#31
20230064304
2023-03-02

FILTER MODULE FOR THE SEPARATION OF OVERSPRAY

#32
20230053356
2023-02-23

Filter assembly and floor cleaner

#33
20220339568
2022-10-27

FILTER UNIT AND METHOD FOR MANUFACTURING THE SAME

#34
20220265888
2022-08-25

AIR PURIFYING DEVICE

#35
20220233986
2022-07-28

HIGH-EFFICIENCY PARTICULATE AIR FILTER ASSEMBLY

#36
20220226533
2022-07-21

Purified air and methods of making and using the same

#37
20220220872
2022-07-14

Blow-by gas filtration assembly with support and control shaft

#38
20220203287
2022-06-30

Switchable filtration system

#39
20220176287
2022-06-09

WALL-MOUNTED AIR PURIFIER

#40
20220124918
2022-04-21

Arc flash energy diffuser

#41
20220088421
2022-03-24

Air Purification System

#42
20220074616
2022-03-10

Air Cleaning and Purifying Apparatus for Elevators

#43
20220061606
2022-03-03

Filter assembly and drying appartus having the same

#44
20220047984
2022-02-17

Filter cartridges; air cleaner assemblies; housings; features; components; and, methods

#45
20220047978
2022-02-17

ANTI-MICROBIAL, ANTI-ALLERGENIC BIO-FUNCTIONAL AIR FILTER MEDIUM FOR RESIDENTIAL AIR FILTRATION AND AIR FILTER ELEMENT

#46
20220023795
2022-01-27

Apparatus and method for controlling display of EPG information

#47
20220016558
2022-01-20

Air purification device

#48
20210396405
2021-12-23

CENTRALIZED AEROSOL SOURCE EXTRACTION AND FILTRATION SYSTEM

#49
20210378477
2021-12-09

Filter assembly and floor cleaner

#50
20210370009
2021-12-02

HAND-HELD OXYGEN GENERATOR AND AIR PURIFIER

#51
20210330158
2021-10-28

Filter system and a vacuum cleaner incorporating a filter system

#52
20210322911
2021-10-21

System, method, and apparatus for ameliorating deposits in selective catalytic reduction systems for the reduction of nitrogen oxide emissions in steam methane reformers

#53
20210308496
2021-10-07

RESPIRATORY MASK

#54
20210276401
2021-09-09

Vehicle cabin filter assembly

#55
20210275955
2021-09-09

Vehicle cabin filter assembly

#56
20210275715
2021-09-09

Respiratory droplet-absorbing device and an apparatus and system including the same

#57
20210205749
2021-07-08

Exhaust gas filter for reflow oven

#58
20210187427
2021-06-24

Apparatus and method for controlling display of EPG information

#59
20210178309
2021-06-17

VARIABLE EFFICIENCY FILTRATION MEDIA

#60
20210138383
2021-05-13

Air purifier with hinged filter frame

#61
20210121815
2021-04-29

Air purifier with hinged filter frame

#62
20210086121
2021-03-25

Air cleaner assemblies and methods of use

#63
20210069627
2021-03-11

Air purifier with hinged filter frame

#64
20210060470
2021-03-04

COMBINED AIR FILTER ELEMENT FILTERING DEVICE

#65
20210047776
2021-02-18

Tumble dryer

#66
20210039031
2021-02-11

Round filter element, in particular for gas filtration

#67
20210001262
2021-01-07

Air purifier with hinged filter frame

#68
20210001261
2021-01-07

Air purifier with hinged filter frame

#69
20210001260
2021-01-07

Air purifier with hinged filter frame

#70
20200306678
2020-10-01

ELECTRONIC APPARATUS

#71
20200230541
2020-07-23

Filter cartridges; air cleaner assemblies; housings; features; components; and, methods

#72
20200215475
2020-07-09

Filter elements; air cleaner; assembly; and, methods

#73
20200208852
2020-07-02

In line air filtration and purification apparatus

#74
20200107686
2020-04-09

Vacuum cleaner

#75
20200086261
2020-03-19

Variable Efficiency Filtration Media

#76
20200078721
2020-03-12

Tetrahedral filter media

#77
20190336901
2019-11-07

SIDE-DISCHARGE TYPE NONDIRECTIONAL AIR PURIFIER

#78
20190314754
2019-10-17

Apparatus and method for controlling display of EPG information

#79
20190308129
2019-10-10

Air-oil separator with two flow paths

#80
20190308128
2019-10-10

Air-oil separator with first separator radially outward of matrix separator

#81
20190293328
2019-09-26

Smart accumulator to scrub inlet fluid

#82
20190282841
2019-09-19

Compact NBC filtration system for collective protection shelters

#83
20190274589
2019-09-12

Low dead space laminar flow water filter for side stream COmonitoring lines

#84
20190247878
2019-08-15

DEVICE FOR SEPARATING OVERSPRAY

#85
20190201597
2019-07-04

Dual in-series large and small droplet filters

#86
20190201088
2019-07-04

Surgical evacuation system with a communication circuit for communication between a filter and a smoke evacuation device

#87
20190193014
2019-06-27

Air cleaner arrangements; components; and, methods

#88
20190111374
2019-04-18

Filter cartridges; air cleaner assemblies; housings; features; components; and, methods

#89
20190076772
2019-03-14

Air cleaner arrangements; components; and, methods

#90
20190060812
2019-02-28

Filter apparatus for a surface cleaning apparatus

#91
20190035580
2019-01-31

Extinguishing gas filtering device and electric current switchgear comprising such a filtering device

#92
20190009205
2019-01-10

Separating device

#93
20180361301
2018-12-20

Filter elements; air cleaner; assembly; and, methods

#94
20180345196
2018-12-06

Air cleaner assemblies and methods of use

#95
20180313573
2018-11-01

Indoor unit of air-conditioning apparatus

#96
20180258626
2018-09-13

TOILET AIR CLEANER

#97
20180236121
2018-08-23

Purified air and methods of making and using the same

#98
20180228688
2018-08-16

Skin beauty device having multi-filter type housing

#99
20180221805
2018-08-09

Air purifier with hinged filter frame

#100
20180207572
2018-07-26

Reusable air filter

#101
20180200544
2018-07-19

BREATHING GLASSES FOR PURIFYING AIR

#102
20180193786
2018-07-12

HAND HELD APPLIANCE

#103
20180117517
2018-05-03

Pneumatic filter and filter element

#104
20170356447
2017-12-14

Air-oil reservoir for an air compressor

#105
20170350608
2017-12-07

In line air filtration and purification apparatus

#106
20170341762
2017-11-30

Air purification system and method of assembling

#107
20170328590
2017-11-16

PARALLEL AIR FILTRATION

#108
20170282110
2017-10-05

FILTER ARRANGEMENT; SEALING SYSTEM; AND METHODS

#109
20170266599
2017-09-21

DUST FILTER BARREL

#110
20170252066
2017-09-07

Purified air and methods of making and using the same

#111
20170234598
2017-08-17

Air purifier for refrigerator

#112
20170234278
2017-08-17

Dual bellow filter element with communication channels

#113
20170234182
2017-08-17

HIGH-END PROCESSING DEVICE FOR PURIFICATION OF EXHAUST OF DIESEL ENGINE

#114
20170225112
2017-08-10

Filter chambers and self-cleaning apparatus for vacuum systems

#115
20170225110
2017-08-10

Long-life air filter for automobiles and method of manufacturing the long-life air filter

#116
20170225101
2017-08-10

Device for treating fluid mixtures

#117
20170197172
2017-07-13

Filter assembly

#118
20170151523
2017-06-01

Dust filter mounted in semiconductor waste gas treatment equipment

#119
20170151520
2017-06-01

Engine panel filter and housing system

#120
20170115024
2017-04-27

Control methods for setting a reference voltage in an air treatment system

#121
20170110857
2017-04-20

Apparatus for Collecting and Filtering Arc By-Products

#122
20170096912
2017-04-06

Foreign substance removal apparatus for gas turbine

#123
20170072354
2017-03-16

Apparatus to purify fresh air using biodegradable filter

#124
20170065921
2017-03-09

AIR PURIFIER

#125
20170056807
2017-03-02

Pleated filter element

#126
20170045245
2017-02-16

Humidifying air cleaner

#127
20170028407
2017-02-02

AIR TREATMENT DEVICE

#128
20170021300
2017-01-26

Oil separator

#129
20160310884
2016-10-27

Air quality indicator

#130
20160288039
2016-10-06

Air cleaner arrangements; components; and, methods

#131
20160279557
2016-09-29

Air cleaner arrangements; components; and methods

#132
20160279554
2016-09-29

Air filter system, air filter element and method for exchanging an air filter element

#133
20160271551
2016-09-22

Filter elements; air cleaner; assembly; and, methods

#134
20160199769
2016-07-14

Methods of purifying air

#135
20160023231
2016-01-28

Method for operating a surface treatment installation, set of filter modules and surface treatment installation

#136
20150367017
2015-12-24

Purified air and methods of making and using the same

#137
20150321133
2015-11-12

Filter arrangement; sealing system; and methods

#138
20150165361
2015-06-18

Air filtration and air purification apparatus

#139
20150033687
2015-02-05

Filter structure for removing contaminants from stream of fluid

#140
20140338294
2014-11-20

Filter element having sealing members and methods

#141
20140325947
2014-11-06

Filter elements; air cleaner; assembly; and, methods

#142
20140170955
2014-06-19

Control methods for setting a reference voltage in an air treatment system

#143
20140130471
2014-05-15

Filter arrangement; sealing system; and methods

#144
20140102058
2014-04-17

Air filter system, air filter element and method for exchanging an air filter element

#145
20130055692
2013-03-07

Air filtration and air purification apparatus

#146
20120311980
2012-12-13

Filter arrangement; sealing system; and methods

#147
20120283508
2012-11-08

PURIFICATION OF AND AIR METHODS OF MAKING AND USING THE SAME

#148
20120210687
2012-08-23

Filter for internal combustion engines

#149
20120079942
2012-04-05

Filtration system and method of design

#150
20120079798
2012-04-05

Filter structure for removing contaminants from stream of fluid

#151
20120067017
2012-03-22

Air cleaner arrangements; components; and, methods

#152
20120055126
2012-03-08

Air filter

#153
20120031060
2012-02-09

Air cleaner arrangements; components; and, methods

#154
20110302891
2011-12-15

Filter arrangement; sealing system; and methods

#155
20110296806
2011-12-08

Filter elements; air cleaner; assembly; and, methods

#156
20110265655
2011-11-03

Combination Filter

#157
20110265437
2011-11-03

Filter element having sealing members and methods

#158
20110255058
2011-10-20

ELECTRICAL DEVICE AND PROJECTION DISPLAY DEVICE

#159
20110185709
2011-08-04

Low Temperature Diesel Particulate Matter Reduction System

#160
20110083150
2011-04-07

Apparatus and method for controlling display of EPG information

#161
20100212271
2010-08-26

Filter element, air cleaner, and methods

#162
20100186358
2010-07-29

Filter element having sealing members and methods

#163
20100175558
2010-07-15

System for inlet air mass enhancement

#164
20100162673
2010-07-01

Filter appliance

#165
20100159815
2010-06-24

PREFILTER FOR SPRAY PAINT BOOTH AND METHOD OF REDUCING CONTAMINATION

#166
20100154643
2010-06-24

Gas filtering device

#167
20100107577
2010-05-06

Filter elements; air cleaner; assembly; and, methods

#168
20100043638
2010-02-25

Air filter unit with at least one main air filter and an auxiliary filter

#169
20100042262
2010-02-18

CONTROL METHODS FOR CALIBRATING MOTOR SPEED IN AN AIR TREATMENT SYSTEM

#170
20100037769
2010-02-18

Control methods for tracking filter life in an air treatment system

#171
20100037679
2010-02-18

Control methods for setting a reference voltage in an air treatment system

#172
20090320678
2009-12-31

Sorbent Filter for the Removal of Vapor Phase Contaminants

#173
20090308060
2009-12-17

Process for purifying exhaust gases and apparatus for purifying exhaust gases

#174
20090211052
2009-08-27

Vacuum cleaner and device having ion generator

#175
20090158926
2009-06-25

Systems and methods for removal of particulate matter in a filtration system

#176
20090145093
2009-06-11

Filter elements; air cleaner; assembly; and, methods

#177
20090113860
2009-05-07

LOW MAINTENANCE AIR CLEANING SYSTEM FOR WELDING CHAMBERS

#178
20090113857
2009-05-07

Low maintenance air cleaning system for welding chambers

#179
20090100813
2009-04-23

Air cleaner arrangements; components; and, methods

#180
20090071327
2009-03-19

Filter System of an Electronic Equipment Enclosure

#181
20090049814
2009-02-26

Air cleaner arrangements with internal and external support for cartridge; components; and, methods

#182
20080264008
2008-10-30

Filter element having sealing members and methods

#183
20080253754
2008-10-16

Sterilising Filter Arrangement Apparatus & Method

#184
20080250772
2008-10-16

Multi-stage apparatus for separating liquid droplets from gases

#185
20080209874
2008-09-04

Filter arrangement; sealing system; and methods

#186
20080163754
2008-07-10

Air purifier

#187
20080105121
2008-05-08

Sorbent filter for the removal of vapor phase contaminants

#188
20080035103
2008-02-14

Crankcase Ventilation Filter

#189
20080011662
2008-01-17

Compositions and methods for fluid purification

#190
20070251381
2007-11-01

Filter system for electronic equipment enclosure

#191
20070246419
2007-10-25

Compositions and methods for fluid purification

#192
20070240406
2007-10-18

Low temperature diesel particulate matter reduction system

#193
20070199285
2007-08-30

Filter element, air cleaner, and methods

#194
20070186894
2007-08-16

Four-stroke internal combustion engine having reduced noise emissions

#195
20070186521
2007-08-16

Dust collecting unit for use in cleaner

#196
20070175192
2007-08-02

Pleated hybrid air filter

#197
20070144348
2007-06-28

Aerosol separator; and method

#198
20070137156
2007-06-21

Filtering apparatus, filter regulator for use with spray gun and spraying system using the same

#199
20070130896
2007-06-14

Filter apparatus for filtering the air for an internal combustion engine

#200
20070119131
2007-05-31

CHEMICAL FILTER ARRANGEMENT FOR ASEMICONDUCTOR MANUFACTURING APPARATUS

#201
20070113740
2007-05-24

Fuel adsorption sheet, manufacturing method thereof, and air cleaner

#202
20070095037
2007-05-03

Supplementary air filter and retainer

#203
20070066215
2007-03-22

Air conditioning apparatus

#204
20070056445
2007-03-15

Filter assembly for a pneumatic tool

#205
20070032186
2007-02-08

Vehicle air purification system

#206
20070028569
2007-02-08

Airborne particle removal system

#207
20070012181
2007-01-18

Control methods for an air treatment system

#208
20060292426
2006-12-28

FILTER ASSEMBLIES AND SYSTEMS FOR INTAKE AIR FOR FUEL CELLS

#209
20060272302
2006-12-07

Air intake filter assembly

#210
20060260341
2006-11-23

Refrigerator with integrated air cleaner

#211
20060236664
2006-10-26

Filter system

#212
20060213162
2006-09-28

Filter media prepared in aqueous system including resin binder

#213
20060201119
2006-09-14

Air cleaner

#214
20060174768
2006-08-10

Apparatus and method for the removal of particulate matter in a filtration system

#215
20060168924
2006-08-03

Wire gauze filter assembly

#216
20060123990
2006-06-15

Filter arrangement and methods

#217
20060113233
2006-06-01

Environmentally friendly acid neutralizing full flow cartridge

#218
20060101998
2006-05-18

Filter element, air cleaner, and methods

#219
20060101795
2006-05-18

Filter elements; air cleaner; assembly; and, methods

#220
20060099119
2006-05-11

Filter system for electrochemical air separation device

#221
20060089289
2006-04-27

Filter element having sealing members and methods

#222
20060037472
2006-02-23

Fluid flow filter

#223
20060026937
2006-02-09

Filter assembly including foam and pleated media

#224
20060016339
2006-01-26

Filter assembly

#225
20060016163
2006-01-26

Multi-stage filtering apparatus

#226
20050284113
2005-12-29

Refrigerator having air-cleaner

#227
20050268581
2005-12-08

Chemical filter arrangement for a semiconductor manufacturing apparatus

#228
20050241284
2005-11-03

Dust collecting unit for use in cleaner

#229
20050235617
2005-10-27

Mist collector arrangement and methods

#230
20050235615
2005-10-27

Filter assemblies and systems for intake air for fuel cells

#231
20050205484
2005-09-22

Filter element, particularly for the static or dead-end filtration of fluids, and corresponding filter device

#232
20050204918
2005-09-22

HEPA air scrubber or negative air pressure machine

#233
20050193694
2005-09-08

Aerosol separator; and method

#234
20050178267
2005-08-18

Method and apparatus for the preparation of clean gases

#235
20050144915
2005-07-07

Pipe trap

#236
20050132681
2005-06-23

Air cleaner

#237
20050132595
2005-06-23

Particulate trap cleaning system

#238
20050108996
2005-05-26

Filter system for an electronic equipment enclosure

#239
20050076623
2005-04-14

Filter assemblies and systems for intake air for fuel cells

#240
20050066638
2005-03-31

Disposable filtration system for bagless vacuum cleaners

#241
20050061261
2005-03-24

Coal-fired power station

#242
20050050866
2005-03-10

Filtering apparatus

#243
20050022673
2005-02-03

Air cleaner

#244
20050022669
2005-02-03

Filter element having sealing members and methods

#245
20050022484
2005-02-03

Air cleaner and method of filtering

#246
20050011172
2005-01-20

Filter unit

#247
20050005767
2005-01-13

Filter element, air cleaner, and methods

#248
20050005582
2005-01-13

Aerosol separator; and method

#249
20050000054
2005-01-06

Vacuum cleaner and device having ion generator

#250
18604720
2025-07-22

Air inlet barrier filter for a helicopter