ClassID:

29579

B01D46/522 - CPC Classification

Classification description:

Filters or filtering processes specially modified for separating dispersed particles from gases or vapours; Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with specific folds, e.g. having different lengths

Recent Application in this class:
#1
20260054207
2026-02-26

COLLAPSIBLE AND FOLDABLE PLEATED DISPOSABLE AIR FILTER

#2
20260042048
2026-02-12

PLEATABLE FILTER MEDIA

#3
20260034492
2026-02-05

FILTER ELEMENT WITH A HANDLE ELEMENT IN A RECESS OF A FILTER MEDIUM BODY AND FILTER DEVICE WITH A FILTER ELEMENT OF THIS TYPE

#4
20260007910
2026-01-08

ENHANCED FACE MASKS FOR IMPROVED EFFICACY AND USABILITY

#5
20250367585
2025-12-04

FILTER ELEMENT AND FILTER SYSTEM

#6
20250256226
2025-08-14

Variable Filter Media Thickness for Improved Flow and Filter Performance

#7
20250249384
2025-08-07

MULTILAYERED MEDIA WITH IRREGULAR STRUCTURE AND/OR REVERSIBLY STRETCHABLE LAYERS

#8
20250187290
2025-06-12

Pleated Filter Preparation System

#9
20250186928
2025-06-12

EXPANDABLE PLEATED AIR FILTERS

#10
20250128198
2025-04-24

FILTER CARTRIDGE FOR A COALESCER

#11
20250099890
2025-03-27

MINI-PLEAT V CELL FILTER

#12
20250041780
2025-02-06

DIAMOND-PLEATED FILTER MEDIA

#13
20250010232
2025-01-09

FILTER MEDIA HAVING ANGLED EMBOSSMENTS

#14
20240416270
2024-12-19

FILTER ELEMENT, CARTRIDGE AND FILTER SYSTEM

#15
20240399281
2024-12-05

COLLAPSIBLE AND FOLDABLE PLEATED DISPOSABLE AIR FILTER

#16
20240399278
2024-12-05

FILTER ELEMENT, AIR CLEANER ASSEMBLY, AND METHODS

#17
20240382885
2024-11-21

FILTER ELEMENT, HOUSING FOR A FILTER SYSTEM, AND FILTER SYSTEM COMPRISING A FILTER ELEMENT AND A HOUSING

#18
20240335782
2024-10-10

CORRUGATED FILTER MEDIA

#19
20240286073
2024-08-29

FOLDING AIR FILTER ASSEMBLIES

#20
20240286072
2024-08-29

FILTER ELEMENT FOR FILTERING FLUID AND METHOD FOR PRODUCING FILTER ELEMENT

#21
20240269600
2024-08-15

FLEXIBLE AIR FILTER ELEMENT

#22
20240252970
2024-08-01

FILTER ELEMENT AND FILTER SYSTEM

#23
20240189748
2024-06-13

FILTER MEDIA PACKS, METHODS OF MAKING AND FILTER MEDIA PRESSES

#24
20240123389
2024-04-18

Air filter for a painting booth used for spray coating

#25
20240100463
2024-03-28

FOLDED FILTER MEDIUM

#26
20240100462
2024-03-28

FOLDABLE FILTER ELEMENT AND FILTER WITH SAME

#27
20240100460
2024-03-28

Filter Element With Gasket Surrounding Filter Head

#28
20240066455
2024-02-29

FILTRATION MEDIA, FILTER PACKS, AND FILTER ELEMENTS WITH PROTRUSIONS

#29
20240001273
2024-01-04

FILTER DEVICE, PRODUCTION METHOD THEREFOR, AND AIR CONDITIONER

#30
20230398484
2023-12-14

FILTER AND CENTRIFUGAL BLOWER

#31
20230392825
2023-12-07

AIR INTAKE FILTER ASSEMBLIES WITH A MULTI-LEVEL FINE FILTER FOR HEATING, VENTILATION, AND/OR AIR CONDITIONING (HVAC) SYSTEMS

#32
20230302391
2023-09-28

FILTER ELEMENT AND FILTER DEVICE

#33
20230278308
2023-09-07

Pleated filter preparation system

#34
20230233968
2023-07-27

PLEATED FILTRATION ASSEMBLY COMPRISING SPUNBONDED PREFILTER

#35
20230233961
2023-07-27

Periodic radial symmetry for filter pleating

#36
20230089672
2023-03-23

COLLAPSIBLE AND FOLDABLE PLEATED DISPOSABLE AIR FILTER

#37
20230078314
2023-03-16

Filtration media pack, filter elements, and air filtration media

#38
20230018748
2023-01-19

FORMED FILTER MEDIA

#39
20230001342
2023-01-05

PLEATED FILTER ELEMENT FOR AIR FILTER

#40
20220339574
2022-10-27

Interrupted, directional emboss of flat sheet

#41
20220323896
2022-10-13

CURVED CORE FOR VARIABLE PLEAT FILTER

#42
20220314156
2022-10-06

Filtration media pack, filter element, and methods

#43
20220126228
2022-04-28

Filter element, air cleaner assembly, and methods

#44
20220096985
2022-03-31

Filter media packs, methods of making and filter media presses

#45
20220040614
2022-02-10

AIR FILTER MEDIUM, FILTER PACK, AIR FILTER UNIT, AND METHOD FOR PRODUCING THE SAME

#46
20220016562
2022-01-20

Pleated media for a conical shaped filter element

#47
20220016558
2022-01-20

Air purification device

#48
20220001640
2022-01-06

Pleated filter preparation system

#49
20220001317
2022-01-06

NANO SILVER ACTIVE FILTER ELEMENT AND A METHOD FOR PREPARING THE NANO SILVER ACTIVE FILTER

#50
20210394109
2021-12-23

Dust removal filter cartridge

#51
20210387128
2021-12-16

Filter pack and air filter

#52
20210339185
2021-11-04

Filter assembly with multiple filter media

#53
20210291103
2021-09-23

Folded Filter Media Pack with Varying Channels and Deep Corrugations

#54
20210276401
2021-09-09

Vehicle cabin filter assembly

#55
20210275955
2021-09-09

Vehicle cabin filter assembly

#56
20210268408
2021-09-02

Pleated filtration media, media packs, filter elements, and methods for filtering fluids

#57
20210252513
2021-08-19

Biological Fluid Filtration System

#58
20210252512
2021-08-19

Biological Fluid Filtration System

#59
20210237076
2021-08-05

Biological Fluid Filtration System

#60
20210237075
2021-08-05

Biological fluid filtration system

#61
20210237074
2021-08-05

Biological fluid filtration system

#62
20210237073
2021-08-05

Biological Fluid Filtration System

#63
20210237072
2021-08-05

Biological Fluid Filtration System

#64
20210237071
2021-08-05

Biological Fluid Filtration System

#65
20210237070
2021-08-05

Biological Fluid Filtration System

#66
20210237069
2021-08-05

Biological Fluid Filtration System

#67
20210237068
2021-08-05

Biological Fluid Filtration System

#68
20210237067
2021-08-05

Biological fluid filtration system

#69
20210237066
2021-08-05

Biological Fluid Filtration System

#70
20210237065
2021-08-05

Biological Fluid Filtration System

#71
20210237064
2021-08-05

Biological Fluid Filtration System

#72
20210197112
2021-07-01

Folding air filter assemblies

#73
20210172409
2021-06-10

Filter and filter cartridge

#74
20210170320
2021-06-10

Filtration media, pleated media pack, filter cartridge, and methods for manufacturing

#75
20210162328
2021-06-03

Air purifier filter

#76
20210129068
2021-05-06

Pulse cleanable deep pleated industrial filter

#77
20210121814
2021-04-29

Dust extraction unit

#78
20210121807
2021-04-29

Air filter element having a circumferentially protruding clean air seal, filter housing and air filter

#79
20210086119
2021-03-25

Filter element, housing for a filter system, and filter system comprising a filter element and a housing

#80
20210077939
2021-03-18

Air filtration media pack, filter element, air filtration media, and methods

#81
20210069631
2021-03-11

Filter element, filter system comprising a filter element, and method

#82
20210069630
2021-03-11

Filter element and filter system having a filter element

#83
20210060470
2021-03-04

COMBINED AIR FILTER ELEMENT FILTERING DEVICE

#84
20200398208
2020-12-24

Divided flow guiding device, centering device, filter unit, method for assembling a filter unit and method for cleaning

#85
20200398202
2020-12-24

Filter media having angled embossments

#86
20200398194
2020-12-24

Periodic radial symmetry for filter pleating

#87
20200391148
2020-12-17

FILTER MEDIA INCLUDING A WAVED FILTRATION LAYER

#88
20200360852
2020-11-19

Fluted filtration media, filtration media packs, and filtration elements

#89
20200353397
2020-11-12

Filter cartridges; features and methods of assembly; air cleaner assemblies; and, filter cartridge combinations

#90
20200346159
2020-11-05

Filter module

#91
20200256585
2020-08-13

Air intake filter assemblies with a multi-level fine filter for heating, ventilation, and/or air conditioning (HVAC) systems

#92
20200254710
2020-08-13

Pleated filter preparation system

#93
20200188833
2020-06-18

Filtration media pack, filter elements, and air filtration media

#94
20200155989
2020-05-21

Air filtration media with performing enhancing additives

#95
20200155985
2020-05-21

Filter Medium, Method for Producing Same, and Use of the Filter Medium in a Filter Element

#96
20200147539
2020-05-14

Air filter and ventilation system comprising the air filter

#97
20200139290
2020-05-07

Filtration media pack, filter element, and methods

#98
20200139289
2020-05-07

FILTER ELEMENT WITH COUNTER-FOLD, AND CASSETTE FILTER WITH SUCH FILTER ELEMENTS, AND FILTER CARTRIDGE WITH SUCH A FILTER ELEMENT

#99
20200129911
2020-04-30

FILTER WITH SEPARATOR PLATES WITH SPECIAL FOLDING

#100
20200129907
2020-04-30

Air filter media with post-pleat-deposited sorbent particles

#101
20200129890
2020-04-30

Support and drainage material, filter, and method of use

#102
20200078721
2020-03-12

Tetrahedral filter media

#103
20200031204
2020-01-30

Road vehicle having an ambient air purification device, ambient air purification device and filter element

#104
20190388822
2019-12-26

Filtration media, pleated media pack, filter cartridge, and methods for manufacturing

#105
20190381442
2019-12-19

System and method for improving mass air flow signal quality

#106
20190366257
2019-12-05

Filter component

#107
20190353123
2019-11-21

Filter and filter cartridge

#108
20190353122
2019-11-21

Filter and filter cartridge

#109
20190336899
2019-11-07

Environmental air cleaning device, road vehicle having environmental air cleaning device, and filter element

#110
20190329171
2019-10-31

FILTER MEDIUM, FILTER ELEMENT PROVIDED WITH SAME, AND METHOD FOR MANUFACTURING FILTER MEDIUM

#111
20190329170
2019-10-31

Interrupted, directional emboss of flat sheet

#112
20190293034
2019-09-26

Filter and filter cartridge

#113
20190247778
2019-08-15

Divided flow guiding device, kit comprising base body and end piece of a flow guiding device, filter unit and method for cleaning

#114
20190240609
2019-08-08

PROJECTION DISPLAY DEVICE AND FILTER STRUCTURAL BODY

#115
20190232203
2019-08-01

Filter element

#116
20190224626
2019-07-25

Fixed rigid wall device for compressed pleat configuration filters

#117
20190217238
2019-07-18

Filter Element

#118
20190208972
2019-07-11

Vacuum filter

#119
20190160415
2019-05-30

APPARATUS AND METHOD FOR SEPARATING OIL PARTICLES FROM AN AIR STREAM

#120
20190070549
2019-03-07

Filter Element, in Particular for Gas Filtration, and filter device

#121
20190054412
2019-02-21

Pleated filtration media having tapered flutes

#122
20190009204
2019-01-10

Folded filter media pack with varying channels and deep corrugations

#123
20180361296
2018-12-20

Filter element, in particular for gas filtration

#124
20180250625
2018-09-06

Filter element and filter assembly

#125
20180214807
2018-08-02

Filter cartridges; features and methods of assembly; filter assemblies; and, filter cartridge combinations

#126
20180214806
2018-08-02

Filter media packs, methods of making and filter media presses

#127
20180214797
2018-08-02

Pleated filtration media, media packs, filter elements, and methods for filtering fluids

#128
20180169559
2018-06-21

Filter element, in particular for gas filtration

#129
20180161717
2018-06-14

FILTER MEDIA, FILTER MEDIA PACKS, AND FILTER ELEMENTS

#130
20180154299
2018-06-07

High-temperature Filter

#131
20180117518
2018-05-03

Filter assembly and methods

#132
20180065072
2018-03-08

V-BANK FILTER AND METHOD OF MAKING

#133
20180056226
2018-03-01

Filtration media, filter packs, and filter elements with protrusions

#134
20180015405
2018-01-18

Waved filter media and elements

#135
20170312673
2017-11-02

Filter media including a waved filtration layer

#136
20170266603
2017-09-21

Filtration media pack, filter elements, and air filtration media

#137
20170234221
2017-08-17

FILTER ASSEMBLY INCLUDING PLEAT TIP SHAPES

#138
20170216758
2017-08-03

Air filtration media pack, filter element, air filtration media, and methods

#139
20170216757
2017-08-03

Filtration media, pleated media pack, filter cartridge, and methods for manufacturing

#140
20170197165
2017-07-13

FILTER ELEMENT WITH VARIED FILTER MEDIA PACK CHARACTERISTICS

#141
20170189847
2017-07-06

Vehicular air filter providing high efficiency particle and gas filtration

#142
20170151527
2017-06-01

AIR PURIFIER

#143
20170096973
2017-04-06

Filter and filter cartridge

#144
20170096972
2017-04-06

Filter and Filter Cartridge

#145
20170096971
2017-04-06

Filter and filter cartridge

#146
20170065924
2017-03-09

Filter and filter media having reduced restriction

#147
20170056807
2017-03-02

Pleated filter element

#148
20170056793
2017-03-02

Filter insert piece comprising a pleated filter element

#149
20170050137
2017-02-23

Filter element with depressed side portion

#150
20170036155
2017-02-09

Air filter system and air filter element for an air filter system

#151
20170036152
2017-02-09

System and method for improving mass air flow signal quality

#152
20170035927
2017-02-09

Air filtration media for air purification

#153
20170028341
2017-02-02

Filtration media pack, filter element, and methods

#154
20170028339
2017-02-02

Self-supporting folded sheet material, filter elements, and methods

#155
20170021299
2017-01-26

Filter cartridge comprising a weld seam

#156
20170001138
2017-01-05

Filter element with filter bellows

#157
20160265436
2016-09-15

Filter assembly including pleat tip shapes

#158
20160263514
2016-09-15

Filter element having a filter bellows

#159
20160243481
2016-08-25

Embossed fluid filter treatment

#160
20160236133
2016-08-18

Apparatus and method for producing a bellows

#161
20160236132
2016-08-18

Embossed air filter filtration medium, filter pack, air filter unit, and method for manufacturing filtration medium for embossed air filter

#162
20160214053
2016-07-28

Filter with bidirectional pleated media

#163
20160136561
2016-05-19

Air filter arrangement; air cleaner assembly; and, methods

#164
20160016106
2016-01-21

Corrugated filter media with modulated corrugations

#165
20160016100
2016-01-21

Filter element for filtering media

#166
20160001209
2016-01-07

Fluid filtering system

#167
20150375142
2015-12-31

Pleated filtration media, media packs, filter elements, and methods for filtering fluids

#168
20150367272
2015-12-24

Pleated filter media

#169
20150298039
2015-10-22

Filter cartridge; features and methods of assembly; filter assemblies; and, filter cartridge combinations

#170
20150251122
2015-09-10

Filter cartridges; features and methods of assembly; air cleaner assemblies; and, filter cartridge combinations

#171
20150251111
2015-09-10

Self-supporting folded sheet material, filter elements, and methods

#172
20150211452
2015-07-30

Filtration media pack, filter elements, and air filtration media

#173
20150202561
2015-07-23

AIR FILTER WITH FOLDED PLEATS

#174
20150121823
2015-05-07

Waved filter media and elements

#175
20150107201
2015-04-23

Air filter cartridge for I.C. motors, method for its manufacture and air filter incorporating said cartridge

#176
20150068175
2015-03-12

Air filter arrangement; air cleaner assembly; and, methods

#177
20150059584
2015-03-05

Filter system with sensor socket

#178
20150059302
2015-03-05

Filter system having a support tube

#179
20150059301
2015-03-05

Filter system with filter element

#180
20150059297
2015-03-05

Air filter system and air filter element for an air filter system

#181
20150033687
2015-02-05

Filter structure for removing contaminants from stream of fluid

#182
20150013542
2015-01-15

Air filter element and air filter

#183
20150013290
2015-01-15

Filter and filter media having reduced restriction

#184
20150007732
2015-01-08

Air Filter Element and Air Filter

#185
20150007535
2015-01-08

Air filter element and air filter

#186
20150007534
2015-01-08

Filter assembly; components therefor; and, methods

#187
20140373491
2014-12-25

Diesel fuel and urea tank air breather filter

#188
20140342132
2014-11-20

Cross-pleated membrane cartridges, and method and apparatus for making cross-pleated membrane cartridges

#189
20140325946
2014-11-06

Air filtration media pack, filter element, air filtration media, and methods

#190
20140265009
2014-09-18

Method and apparatus for corrugating filter media

#191
20140260138
2014-09-18

Radial pleat design and collapsible filter element

#192
20140182251
2014-07-03

Filtration media pack, filter element, and methods

#193
20140165839
2014-06-19

Extended Life Panel Filter

#194
20140157742
2014-06-12

Waved filter media and elements

#195
20140144112
2014-05-29

Filter cartridges; features and methods of assembly; air cleaner assemblies; and, filter cartridge combinations

#196
20140059986
2014-03-06

Filter arrangement and method for producing a filter receptacle

#197
20140053521
2014-02-27

Efficiency-improved multiple bellows filter

#198
20140047807
2014-02-20

Filter for a fluid-conducting pipe

#199
20140033664
2014-02-06

Filter arrangement and methods

#200
20130306547
2013-11-21

PLEATED FILTER MEDIA WITH CONTINUALLY VARYING INTERMEDIATE PLEAT HEIGHTS

#201
20130248090
2013-09-26

Method of making a Z-media having flute closures

#202
20130219844
2013-08-29

Method of adhering a pleated filtration media and filter and media filter stack using same

#203
20130189081
2013-07-25

Filter assembly including pleat tip shapes

#204
20130140227
2013-06-06

Filter element

#205
20130062276
2013-03-14

Filter and filter media having reduced restriction

#206
20130025245
2013-01-31

Waved filter media and elements

#207
20130008849
2013-01-10

Device for Folding a Web-Shaped Filter Medium and Method for Producing a Filter Element Folded in a Zigzag Shape

#208
20120304602
2012-12-06

WAVED FILTER MEDIA AND ELEMENTS

#209
20120261331
2012-10-18

Embossed fluid filter element

#210
20120198803
2012-08-09

Filter device

#211
20120193820
2012-08-02

Cross-pleated membrane cartridges, and method and apparatus for making cross-pleated membrane cartridges

#212
20120186203
2012-07-26

FOLDED BAGHOUSE FILTER

#213
20120118814
2012-05-17

Pleated filter element with tapering bend lines

#214
20120079798
2012-04-05

Filter structure for removing contaminants from stream of fluid

#215
20120073254
2012-03-29

FILTER ELEMENT AND DOUBLE-PLEATED AIR FILTER USING THE SAME

#216
20120055127
2012-03-08

Filter and filter media having reduced restriction

#217
20120043697
2012-02-23

Fluid flow filter and method of making and using

#218
20110277431
2011-11-17

Air filtration media pack, filter element, air filtration media, and methods

#219
20110186504
2011-08-04

Pleated filtration media having tapered flutes

#220
20110162337
2011-07-07

Waved filter media and elements

#221
20110113736
2011-05-19

Filter assembly; components therefor; and, methods

#222
20110089038
2011-04-21

Filter element with particle-trapping crevice

#223
20110067574
2011-03-24

Filter arrangement

#224
20110067368
2011-03-24

Filter arrangement and methods

#225
20110041469
2011-02-24

Ceramic radial wall flow particulate filter

#226
20100300052
2010-12-02

Air filter with improved structural support

#227
20100229513
2010-09-16

Air Filter for Internal Combustion Engines in Motor Vehicles and Method for Producing the Filter

#228
20100175556
2010-07-15

Multi-use personal ventilation/filtration system

#229
20100146919
2010-06-17

Air filter arrangement; air cleaner assembly; and methods

#230
20100132153
2010-06-03

CLEANABLE FILTER SYSTEM

#231
20100108598
2010-05-06

Filter with variable pleat depth

#232
20100107881
2010-05-06

Waved filter media and elements

#233
20100089819
2010-04-15

PLEATED MULTI-LAYER FILTER MEDIA AND CARTRIDGE

#234
20100078379
2010-04-01

Pleated filtration media, media packs, filter elements, and methods for filtering fluids

#235
20100050580
2010-03-04

Apparatus for filtering gases and method of manufacturing same

#236
20100032365
2010-02-11

Z-MEDIA HAVING FLUTE CLOSURES, METHODS AND APPARATUS

#237
20090272084
2009-11-05

Waved filter media and elements

#238
20090235624
2009-09-24

Fluid flow filter and method of making and using

#239
20090193974
2009-08-06

Cross-pleated membrane cartridges, and method and apparatus for making cross-pleated membrane cartridges

#240
20090183472
2009-07-23

Apparatus for collecting dust and a pleated-type filter therefor

#241
20090127211
2009-05-21

Filtration media pack, filter element, and methods

#242
20090071114
2009-03-19

GAS TURBINE INLET AIR FILTRATION FILTER ELEMENT

#243
20090020472
2009-01-22

PLEATED FILTER

#244
20090016923
2009-01-15

Method for manufacturing at least one area of a filter structure, in particular for a particulate filter in the exhaust gas system of an internal combustion engine

#245
20080314009
2008-12-25

Fiber collecting media strip for a mist eliminator

#246
20080282890
2008-11-20

Air filtration media pack, filter element, air filtration media, and methods

#247
20080251442
2008-10-16

Fluid Treatment Assemblies and Elements and Methods for Making Them

#248
20080246182
2008-10-09

High flow fluid filtration systems and methods for manufacturing same

#249
20080245725
2008-10-09

Fluid filter

#250
20080245720
2008-10-09

Fluid filter cartridge and housing

#251
20080245234
2008-10-09

Diesel particulate filter assembly

#252
20080202078
2008-08-28

Waved filter media and elements

#253
20080115472
2008-05-22

Filter Device, In Particular For An Exhaust-Gas System Of An Internal Combustion Engine

#254
20070278149
2007-12-06

PLEATED TYPE CARTRIDGE FILTER DEVICE

#255
20070270095
2007-11-22

Car air conditioner

#256
20070209343
2007-09-13

Filter assembly with pleated media pockets, and methods

#257
20070204577
2007-09-06

Reduced adhesive filter assembly

#258
20070199286
2007-08-30

Filter element

#259
20070157589
2007-07-12

Filter with variable pleat depth

#260
20060272305
2006-12-07

Channel filter

#261
20060254230
2006-11-16

Fluid filter with canted fanfold pleats

#262
20060150594
2006-07-13

Fiber collecting media strip for a mist eliminator

#263
20060107639
2006-05-25

Pleated multi-layer filter media and cartridge

#264
20050269256
2005-12-08

Arrangements and methods for contacting a gas and a liquid

#265
20050144916
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