ClassID:

29569

B01D46/44 - CPC Classification

Classification description:

Filters or filtering processes specially modified for separating dispersed particles from gases or vapours; Auxiliary equipment or operation thereof controlling filtration

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

AIR SCRUBBER

#2
20260115640
2026-04-30

USER INTERFACE FOR AN AIR FILTRATION ASSEMBLY

#3
20250381507
2025-12-18

AIR PURIFIER

#4
20250381506
2025-12-18

AIR PURIFIER

#5
20250375727
2025-12-11

AIR PURIFICATION DEVICE AND CONTROL METHOD THEREOF

#6
20250257887
2025-08-14

FILTER ASSEMBLY AND AIR PURIFIER INCLUDING SAME

#7
20250256290
2025-08-14

AN APPARATUS FOR CONTINUOUS REMOVAL OF PARTICLES

#8
20250235809
2025-07-24

AIR PURIFICATION SYSTEM

#9
20250229206
2025-07-17

AIR CLEANING MODULE AND AIR CLEANING DEVICE

#10
20250133666
2025-04-24

AIR PURIFIER

#11
20240391593
2024-11-28

REPLACEABLE AIR FILTERS FOR AIRCRAFT DEVICES

#12
20240358210
2024-10-31

BYPASS VALVE

#13
20240316486
2024-09-26

DEVICE AND METHOD FOR ENHANCED FILTRATION FOR BAKERY DUST AND DRIED GLAZE COATING

#14
20240123387
2024-04-18

INTELLIGENT FILTER CONSTRUCTION FOR ELECTRICAL APPLIANCES, IN PARTICULAR DRYING/WASHING-DRYING MACHINES, METHOD FOR MAKING THE CONSTRUCTION, AND METHOD FOR DETECTING IN REAL TIME A PARTIAL OR TOTAL CLOGGING OF THE CONSTRUCTION AND A VALUE OF RESIDUAL MOISTURE FOR OPTIMIZING THE OPERATING CYCLE OF THE APPLIANCE

#15
20240109022
2024-04-04

LOW NOISE, CEILING MOUNTED INOOR AIR SCRUBBER

#16
20240100465
2024-03-28

Compressed Air Pulse Cleaning System Without Blow Tube

#17
20240066428
2024-02-29

Industrial Washer with Exhaust System

#18
20240009610
2024-01-11

IMPROVEMENTS FOR DRUM FILTERS AND FILTER SYSTEMS COMPRISING SUCH DRUM FILTERS

#19
20230392824
2023-12-07

SOUND-REDUCING AIR PURIFICATION UNIT

#20
20230338892
2023-10-26

PORTABLE ATMOSPHERIC WATER GENERATOR

#21
20230294031
2023-09-21

AIR TREATMENT SYSTEM, METHOD, VEHICLE AND FLEET FOR TREATING ENVIRONMENT AIR

#22
20230264132
2023-08-24

Motorized valve with washing filter extending from a bleed conduit inlet into valve duct

#23
20230243521
2023-08-03

AIR PURIFIER

#24
20230235903
2023-07-27

HAZARDOUS GAS PURIFICATION DEVICE WITH BUILT-IN PURIFICATION SYSTEM

#25
20230218463
2023-07-13

Containment, Treatment, and Removal of Aerosolized Viral Contamination

#26
20230211269
2023-07-06

DUST COLLECTOR APPARATUS

#27
20230166205
2023-06-01

HAIRCARE APPLIANCE

#28
20230139538
2023-05-04

METHOD AND DEVICE FOR TREATING VARIOUS TYPES OF FLUIDS

#29
20230055622
2023-02-23

Fan assembly with filtering and exhaust

#30
20220373196
2022-11-24

AIR-CONDITIONING SYSTEM

#31
20220298937
2022-09-22

BLOW-BY GAS FILTRATION ASSEMBLY WITH BLOCKING INSERT

#32
20220290591
2022-09-15

Blow-by filtration assembly with shaft comprising outflow portion

#33
20220287521
2022-09-15

Bypass valve

#34
20220258095
2022-08-18

Low noise, ceiling mounted indoor air scrubber

#35
20220250003
2022-08-11

INHIBITOR REMOVAL SYSTEM FOR SENSOR DETECTION

#36
20220243934
2022-08-04

Air humidification and purification device

#37
20220233990
2022-07-28

Dust collector

#38
20220228603
2022-07-21

Air filtration ceiling fan

#39
20220212133
2022-07-07

Air purifier

#40
20220176313
2022-06-09

AIR TREATMENT SYSTEM

#41
20220176287
2022-06-09

WALL-MOUNTED AIR PURIFIER

#42
20220176168
2022-06-09

SMART MASKS

#43
20220148557
2022-05-12

Noise control

#44
20220118392
2022-04-21

TOWER TYPE AIR CLEANING DEVICE FOR OUTDOOR

#45
20220080232
2022-03-17

Respiratory face mask for improved communications

#46
20220072345
2022-03-10

FACE MASK

#47
20220047767
2022-02-17

Device containing air detection, filtering, disinfecting and conditioning elements with display

#48
20220040621
2022-02-10

Filter conditioning unit for high-volume sampling filters

#49
20220040620
2022-02-10

UV ENABLED FINS ENCAPSULATION SYSTEM

#50
20220023790
2022-01-27

NECK-MOUNTED AIR PURIFIER

#51
20210372640
2021-12-02

HUMIDIFICATION AND AIR CLEANING APPARATUS

#52
20210356168
2021-11-18

FILTER SCREEN RAIL MODULE, CLEANING MEMBER, INDOOR UNIT OF AIR CONDITIONER, AND AIR CONDITIONER

#53
20210329818
2021-10-21

Storage-type modular data center

#54
20210316243
2021-10-14

NEGATIVE AIR FILTRATION SYSTEM

#55
20210290989
2021-09-23

Personal Air Filtering Device with Safety Features

#56
20210289875
2021-09-23

Personal air filtering device with automatic control of air movement

#57
20210289851
2021-09-23

Personal air filtration system with smart app

#58
20210269965
2021-09-02

Clothes care apparatus

#59
20210164173
2021-06-03

Earth working machine having a dust extraction system with selectable filtration of the extracted dust-laden air

#60
20210138383
2021-05-13

Air purifier with hinged filter frame

#61
20210121815
2021-04-29

Air purifier with hinged filter frame

#62
20210086126
2021-03-25

Powder container

#63
20210086123
2021-03-25

Particulate filter and methods for removing particulates from a particulate filter

#64
20210086122
2021-03-25

Particulate filter and methods for removing particulates from a particulate filter

#65
20210069627
2021-03-11

Air purifier with hinged filter frame

#66
20210031141
2021-02-04

System and method for removing airborne molecular contaminants from gas streams

#67
20210016216
2021-01-21

Method and device for holistic protection and virus transmission suppression

#68
20210001262
2021-01-07

Air purifier with hinged filter frame

#69
20210001261
2021-01-07

Air purifier with hinged filter frame

#70
20210001260
2021-01-07

Air purifier with hinged filter frame

#71
20200391150
2020-12-17

Pulse air cleaner system and methods with controlled scavenge

#72
20200345905
2020-11-05

SURGICAL SMOKE REMOVING DEVICE

#73
20200324238
2020-10-15

Filter cartridge assembly having fluid management structure

#74
20200316513
2020-10-08

FAN COIL AND AIR CLEANING SYSTEM

#75
20200306907
2020-10-01

Dust collecting system

#76
20200300485
2020-09-24

Air purifier

#77
20200188831
2020-06-18

SYSTEM FOR DETERMINING FORCE IMPARTED BY A FILTER IN A VARIABLE FLOW ENVIRONMENT AND RELATED METHODS OF USE

#78
20200164723
2020-05-28

Fresh air filter regeneration for an HVAC system in a work vehicle

#79
20190323524
2019-10-24

Air filtration ceiling fan

#80
20190299154
2019-10-03

Low noise, ceiling mounted indoor air scrubber

#81
20190184324
2019-06-20

Air cleaner

#82
20190176074
2019-06-13

Separator assembly for filter systems

#83
20190160412
2019-05-30

Ventilating device

#84
20190125917
2019-05-02

Air cleaner

#85
20190118140
2019-04-25

System and method for treating ambient air

#86
20190076771
2019-03-14

Pulse-jet valve performance monitoring system and method

#87
20180318743
2018-11-08

Air filtration for a mobile mining machine

#88
20180257018
2018-09-13

Air purifying device

#89
20180250622
2018-09-06

Air conditioner and control method therefor

#90
20180245499
2018-08-30

Particulate matter sensor with engineered particle size cut-point

#91
20180244034
2018-08-30

Additive manufacturing apparatus and methods

#92
20180221805
2018-08-09

Air purifier with hinged filter frame

#93
20180214809
2018-08-02

System for determining force imparted by a filter in a variable flow environment and related methods of use

#94
20180200658
2018-07-19

Air cleaner

#95
20180154295
2018-06-07

FABRIC FILTER LOUVER ASSEMBLY

#96
20180064968
2018-03-08

Wearable Air Purifier

#97
20180016779
2018-01-18

ODOR ELIMINATOR FOR TOILET

#98
20170341001
2017-11-30

Air purifier filter system, an air purifier and a method for controlling an air purifier

#99
20170304757
2017-10-26

PORTABLE INDUSTRIAL AIR FILTRATION DEVICE

#100
20170246575
2017-08-31

Fabric filter louver assembly

#101
20170246486
2017-08-31

SYSTEMS AND METHODS FOR AIR FILTRATION MONITORING

#102
20170197166
2017-07-13

DUST COLLECTOR BAG FILTER CLEANING SYSTEM HAVING TWO CONTROL VALVES SEPARATED FROM EACH OTHER AND TWO COMPRESSED AIR PIPES SEPARATED FROM EACH OTHER

#103
20170183854
2017-06-29

Bathroom air purification and odor reduction system

#104
20170165599
2017-06-15

Smoke filter

#105
20170144097
2017-05-25

Methods and apparatuses for detecting parameter for air purifier

#106
20170130439
2017-05-11

DEODORIZING SYSTEM, DEVICE AND METHODS FOR ODOR REMOVAL

#107
20170114695
2017-04-27

Combining model and delta pressure based soot load estimates

#108
20170105383
2017-04-20

Environment cleaning system for an animal breeding house

#109
20170095771
2017-04-06

System and method for removing airborne molecular contaminants from gas streams

#110
20170087500
2017-03-30

Localized ventilation systems and methods

#111
20170087495
2017-03-30

Filter for a portable industrial air filtration device

#112
20160376019
2016-12-29

Regenerative activated carbon filtration for aircraft OBIGGS

#113
20160317961
2016-11-03

Air filter assembly

#114
20160076781
2016-03-17

METHOD AND APPARATUS FOR MONITORING AND ENSURING AIR QUALITY IN A BUILDING

#115
20160074801
2016-03-17

Filter for a portable industrial air filtration device

#116
20160023132
2016-01-28

Elongated scraper profile

#117
20160016104
2016-01-21

System for determining force imparted by a filter in a variable flow environment and related methods of use

#118
20160013452
2016-01-14

Operating platform

#119
20150343365
2015-12-03

Compressor system and oil separation system

#120
20150306532
2015-10-29

Filter device and method for cleaning at least one filter element, in particular by using such a filter device

#121
20150285517
2015-10-08

System for determining force imparted by a filter in a variable force environment and related methods of use

#122
20150285112
2015-10-08

Vehicle ambient air purification arrangement and method, and a vehicle and vehicle fleet comprising such arrangement

#123
20150224437
2015-08-13

Air treatment device with a detachable sensor module

#124
20150165361
2015-06-18

Air filtration and air purification apparatus

#125
20150153317
2015-06-04

System for Inexpensive Characterization of Air Pollutants and Inexpensive Reduction of Indoor Dust

#126
20150033681
2015-02-05

Inlet air filter device for a power plant

#127
20140338528
2014-11-20

Method and apparatus for monitoring and ensuring air quality in a building

#128
20140331859
2014-11-13

Method of filtering air

#129
20140301873
2014-10-09

Condensate separator device for a compressor arrangement for the production of compressed air

#130
20140260996
2014-09-18

Portable industrial air filtration device

#131
20140260994
2014-09-18

Portable industrial air filtration device

#132
20140245708
2014-09-04

Air filter assembly

#133
20140230387
2014-08-21

Air filter assembly

#134
20140102305
2014-04-17

Method and a device for removing mercury from a process gas

#135
20130333573
2013-12-19

Dynamo-electric machine provided with gas purity maintainer

#136
20130167721
2013-07-04

Filter system

#137
20130125745
2013-05-23

Method and system for controlling filter operation

#138
20130068107
2013-03-21

Exhaust gas purification system

#139
20130068106
2013-03-21

Fan-and-filter unit

#140
20130055692
2013-03-07

Air filtration and air purification apparatus

#141
20120282159
2012-11-08

Exhaust gas purification apparatus and method for engine and filter regeneration system of the exhaust gas purification apparatus

#142
20110283886
2011-11-24

Method And Apparatus For Regenerating A Filter

#143
20110214485
2011-09-08

Method and apparatus for carrying out integrity tests of a non-wetted filter element

#144
20110197760
2011-08-18

Method and a device for removing mercury from a process gas

#145
20110120313
2011-05-26

Sealed air purifier

#146
20110056383
2011-03-10

FILTER

#147
20100263355
2010-10-21

Method and device for diagnosing a particle filter

#148
20100101409
2010-04-29

Method and system for controlling filter operation

#149
20100095844
2010-04-22

Portable room air purifier

#150
20100077923
2010-04-01

Filter apparatus and method

#151
20100001677
2010-01-07

System and method for determining air purifier filter change time using measurement of motor speed

#152
20090282641
2009-11-19

Filtering means and floor-sweeping machine provided with such means

#153
20090241772
2009-10-01

Particle Separator for Separating Drill Cuttings From an Air Flow and a Drill Rig as Well as a Method for Controlling a Particle Separator

#154
20090229467
2009-09-17

Electrically heated particulate matter filter with recessed inlet end plugs

#155
20090188223
2009-07-30

Air treatment system

#156
20090188222
2009-07-30

Air treatment system

#157
20090188221
2009-07-30

Air treatment system

#158
20090188218
2009-07-30

Air treatment system

#159
20090139200
2009-06-04

Turboengine air intake provided with a controlled filter system

#160
20090133382
2009-05-28

Electrically regenerated exhaust particulate filter for an engine system and operating strategy therefor

#161
20090095157
2009-04-16

Smokestack

#162
20090078116
2009-03-26

Adaptable dual-directional, differential pressure assembly

#163
20080216657
2008-09-11

Air purifier for removing particles or contaminants from air

#164
20080078688
2008-04-03

Housing assembly with bag presence indicator

#165
20080016898
2008-01-24

Refrigerator with an air filter/freshener system

#166
20070241510
2007-10-18

Filter seating monitor

#167
20070199378
2007-08-30

System and method for monitoring a filter

#168
20070079706
2007-04-12

Control gas filter for gas processing system

#169
20070022724
2007-02-01

Method, system and apparatus for detecting defects in a honeycomb body using a particulate fluid

#170
20070012192
2007-01-18

Air treatment system

#171
20060249023
2006-11-09

Filtering particulate materials in continuous emission monitoring systems

#172
20060230730
2006-10-19

Modular air purification unit

#173
20060034737
2006-02-16

Air purifier with control sensors

#174
20050229777
2005-10-20

Method and apparatus for filtering particulate matter from an air-flow

#175
20050092183
2005-05-05

Pressure limiting and/or flow regulating valve for use with POU/POE filter system

#176
18119938
2023-10-03

Industrial filter assembly enhancement

#177
17303370
2022-01-11

Negative air filtration system

#178
17158341
2022-02-01

Fuel odor control system for vehicle

#179
14294470
2016-04-12

Environmental air filter system