ClassID:

29366

B01D39/04 - CPC Classification

Classification description:

Filtering material for liquid or gaseous fluids; Loose filtering material, e.g. loose fibres Organic material, e.g. cellulose, cotton

Recent Application in this class:
#1
20260131263
2026-05-14

FILTRATION SYSTEM

#2
20250375720
2025-12-11

FILTRATION SYSTEM

#3
20250303328
2025-10-02

IMPREGNATED FILTER MEDIUM

#4
20250281860
2025-09-11

FILTER MEDIA INCLUDING OUT-OF-PLANE SOLID ELEMENTS, METHODS OF FORMING THEM, AND USES THEREOF

#5
20250099879
2025-03-27

WATER FILTRATION APPARATUS AND PROCESS

#6
20250072484
2025-03-06

BIODEGRADABLE AND COMPOSABLE FIBERS AND MATERIALS MADE THEREFROM

#7
20240424477
2024-12-26

SYSTEM AND DEVICES FOR REMOVAL OF CONTAMINATES

#8
20240401296
2024-12-05

DEVICES, SYSTEMS AND METHODS FOR EROSION CONTROL

#9
20240229314
2024-07-11

ELECTROSPUN POROUS MEDIA

#10
20240157275
2024-05-16

FILTRATION DEVICE AND WATER FILTRATION PITCHER COMPRISING THE SAME

#11
20230226472
2023-07-20

Filter Media, Filter and Filtration Machine

#12
20230201800
2023-06-29

AIR PERMEABLE FILTER MATERIAL COMPRISING A POLYMER AEROGEL

#13
20230084295
2023-03-16

Method and Apparatus for Treating Contaminated Fluid Medium

#14
20230078438
2023-03-16

WATER FILTRATION APPARATUS AND PROCESS

#15
20220387907
2022-12-08

Filter system for removing and/or neutralizing undissolved oil, grease, and salts and/or abraded metal particles on and in emulsions containing water

#16
20220250775
2022-08-11

Systems and methods for centrifugal force-based canister filling

#17
20220220059
2022-07-14

PROCESS FOR CRYSTALLIZATION OF HIGH PURITY LUTEIN ESTERS FROM MARIGOLD EXTRACTS

#18
20220127175
2022-04-28

Method of purifying natural water and wastewater

#19
20220111234
2022-04-14

PERSONAL AIR PURIFIER

#20
20220062797
2022-03-03

VARIABLE-POROSITY FILTERING APPARATUS HAVING COMPRESSIBLE FILTERING MEDIUM

#21
20220025559
2022-01-27

Systems and methods for thermally bonding fiber

#22
20210402331
2021-12-30

Method of filtering water being returned to a swimming pool

#23
20210361982
2021-11-25

Air purification face mask structure

#24
20210340041
2021-11-04

STORMWATER FILTER UTILIZING A HYDROPONIC BED AS FILTERING COMPONENT

#25
20210329818
2021-10-21

Storage-type modular data center

#26
20210308609
2021-10-07

FILTER MEDIA INCLUDING OUT-OF-PLANE SOLID ELEMENTS, METHODS OF FORMING THEM, AND USES THEREOF

#27
20210283541
2021-09-16

Spun-bonded nonwoven fabric and air filter constituted from spun-bonded nonwoven fabric

#28
20210222388
2021-07-22

Devices, systems and methods for erosion control

#29
20210060476
2021-03-04

NANOMATERIAL INCLUDING NANOFIBERS AND BEADS FOR HEPA AIR FILTER MEDIA

#30
20200346147
2020-11-05

USE OF POLYMERS AS FILTERING AIDS AND/OR STABILIZERS

#31
20200277545
2020-09-03

Apparatus and method for acquiring essential oils

#32
20200261836
2020-08-20

GRANULAR FILTRATION MEDIA MIXTURE AND USES IN WATER PURIFICATION

#33
20200247700
2020-08-06

Multistage shower water filter and water filtering method

#34
20200179847
2020-06-11

Enhanced Surface Area Dependent Functional Material from Combinational Manufacture with Industrial Hemp for Removing Lithium and Other Constituents from Brine

#35
20200179838
2020-06-11

Multistage fiber filtering apparatus capable of selectively filtering

#36
20200123332
2020-04-23

Carbon fiber composite, a medium incorporating the carbon fiber composite, and a related method

#37
20200122068
2020-04-23

Fine fiber media layer

#38
20200122060
2020-04-23

Fiber filtering apparatus

#39
20200060489
2020-02-27

Vacuum cleaner filter bags comprising recycled textile materials and/or cotton linters

#40
20190388806
2019-12-26

Method of forming a compost filter sock

#41
20190382286
2019-12-19

Device for cleaning a fluid contaminated with oil

#42
20190344289
2019-11-14

ELECTROSTATIC REMOVAL OF COLLOIDAL, SOLUBLE AND INSOLUBLE MATERIALS FROM A FLUID

#43
20190233606
2019-08-01

Thermally expandable thermoplastic microspheres and process for their preparation

#44
20190218111
2019-07-18

Filtration medium for removal or inactivation of microorganisms from water

#45
20190135839
2019-05-09

Sulfur scavenging materials

#46
20190099700
2019-04-04

Fluid purification device

#47
20190070541
2019-03-07

FILTER MATERIAL AND FILTRATION ASSEMBLY

#48
20190039919
2019-02-07

Method and apparatus for treating contaminated fluid medium

#49
20190038826
2019-02-07

Blood filtration system containing mannose coated substrate

#50
20190009199
2019-01-10

YARN WITH MULTI-DIRECTIONAL LAYERED FIBERS

#51
20190009191
2019-01-10

Application of Zea Mays Cob as a Heavy Metal Ion Exchange Filter for Water purification

#52
20180264481
2018-09-20

Fine particulate compositions comprising non-composted coconut coir pith and process for their preparation

#53
20180250619
2018-09-06

Urban lung system and method to separate particulate matter and other toxic elements from the atmospheric air by using kinetic energy means

#54
20180200544
2018-07-19

BREATHING GLASSES FOR PURIFYING AIR

#55
20180078886
2018-03-22

Process of separating blood plasma/serum from whole blood

#56
20180078880
2018-03-22

FILTER BED BACKWASH SYSTEM AND PROCESS WITH RECYCLED GAS

#57
20180057646
2018-03-01

Carbon fiber composite, a medium incorporating the carbon fiber composite, and a related method

#58
20180043288
2018-02-15

Integrated composite filter cartridge and water purifying system having same

#59
20180028945
2018-02-01

Fiber filtering apparatus

#60
20170368482
2017-12-28

Multistage fiber filtering apparatus capable of selectively filtering

#61
20170319993
2017-11-09

Fine fiber media layer

#62
20170245438
2017-08-31

Fine Particulate Compositions Comprising Non-Composted Coconut Coir Pith and Process for Their Preparation

#63
20170239600
2017-08-24

Granular filtration media mixture and uses in water purification

#64
20170173511
2017-06-22

Method for retrovirus removal

#65
20170151515
2017-06-01

Web comprising fine fiber and reactive, adsorptive or absorptive particulate

#66
20170051084
2017-02-23

FILTERING MATERIAL, FILTRATION FILTER, AND FILTRATION METHOD

#67
20160375384
2016-12-29

FILTER MEDIA AND METHODS OF PRODUCING THE SAME AND USES THEREOF

#68
20160361674
2016-12-15

FILTER MEDIA INCLUDING FINE STAPLE FIBERS

#69
20160360745
2016-12-15

Compositions for Purification

#70
20160318039
2016-11-03

Electrostatic removal of colloidal, soluble and insoluble materials from a fluid

#71
20160288029
2016-10-06

Fuel Filter

#72
20160271541
2016-09-22

OIL / WATER SEPARATION MEDIA AND METHOD OF USING SAME

#73
20160263551
2016-09-15

Sulfur scavenging materials

#74
20160237378
2016-08-18

A FILTER MEDIUM FOR THE FILTRATION OF OLIVE OIL, IN PARTICULAR FOR THE FILTRATION OF EXTRA VIRGIN OLIVE OIL, AND THE FILTRATION PROCESS OF THE OLIVE OIL, IN PARTICULAR OF THE FILTRATION OF THE EXTRA VIRGIN OLIVE OIL

#75
20160220932
2016-08-04

FILTER AID AND FILTER LAYER

#76
20160175746
2016-06-23

Integrated composite filter and water purification system having the same

#77
20160129376
2016-05-12

Fuel filter

#78
20160101229
2016-04-14

BLOOD FILTRATION SYSTEM CONTAINING MANNOSE COATED SUBSTRATE

#79
20160074787
2016-03-17

Filter media comprising fibers including charged particles

#80
20150360173
2015-12-17

Sulfur scavenging materials for filters and coatings

#81
20150343352
2015-12-03

Sulfur scavenging materials for filters and coatings

#82
20150314220
2015-11-05

FILTRATION ARRANGEMENT AND METHOD

#83
20150182884
2015-07-02

Hybrid type fiber filtering apparatus

#84
20150101987
2015-04-16

STACKED PLATE-SHAPED COMPOSITE MEMBRANE CARTRIDGE

#85
20140291224
2014-10-02

Filter medium layer and filter device provided with same

#86
20140290593
2014-10-02

DEVICE AND METHOD FOR GASIFYING BIOMASS

#87
20140217011
2014-08-07

Web comprising fine fiber and reactive, adsorptive or absorptive particulate

#88
20140196420
2014-07-17

Fine fiber media layer

#89
20140116947
2014-05-01

Mixed hydrophilic/hydrophobic fiber media for liquid-liquid coalescence

#90
20130327006
2013-12-12

Terpolymer for melt blown media for air filtration

#91
20130313736
2013-11-28

Filtration medias, fine fibers under 100 nanometers, and methods

#92
20130312604
2013-11-28

Fluoropolymer gas separation films

#93
20130270192
2013-10-17

Mixed hydrophilic/hydrophobic fiber media for liquid-liquid coalescence

#94
20130197664
2013-08-01

Electrospun Porous Media

#95
20130122771
2013-05-16

NON-WOVEN FIBER FABRIC, AND PRODUCTION METHOD AND PRODUCTION DEVICE THEREFOR

#96
20130008853
2013-01-10

Web comprising fine fiber and reactive, adsorptive or absorptive particulate

#97
20130001154
2013-01-03

Fine fiber media layer

#98
20120312758
2012-12-13

COMPOSITE MECHANICAL WATER FILTER MEDIA

#99
20120272828
2012-11-01

Web comprising fine fiber and reactive, adsorptive or absorptive particulate

#100
20120204527
2012-08-16

Fine fiber media layer

#101
20120148841
2012-06-14

Method and Apparatus for Making an Improved High Surface Area Fiber

#102
20120142083
2012-06-07

BIOFILTER

#103
20120067293
2012-03-22

Biofiltration Applicator for Controlling and Accessing the Initial Point of Contact

#104
20120061332
2012-03-15

Method for retrovirus removal

#105
20110315628
2011-12-29

System and method for capturing and bioremediating hydrocarbon pollutants using dynamic filters

#106
20110293485
2011-12-01

Web comprising fine fiber and reactive, adsorptive or absorptive particulate

#107
20110253620
2011-10-20

Web comprising fine fiber and reactive, adsorptive or absorptive particulate

#108
20110155661
2011-06-30

Water filter materials and water filters containing a mixture of microporous and mesoporous carbon particles

#109
20110130534
2011-06-02

HIGH-STRENGTH POLYHIPE MATERIAL, PROCESS FOR PREPARING THE SAME, EMULSION USEFUL FOR PREPARATION THEREOF AND ARTICLE FORMED OF SAID MATERIAL

#110
20110067369
2011-03-24

Fine fiber media layer

#111
20100282682
2010-11-11

Fluid filtration articles and methods of making and using the same

#112
20100275510
2010-11-04

PURIFICATION METHOD AND APPARATUS

#113
20100233673
2010-09-16

Devices, systems, and methods for reducing levels of pro-inflammatory or anti-inflammatory stimulators or mediators in blood products

#114
20100200512
2010-08-12

Mixed hydrophilic/hydrophobic fiber media for liquid-liquid coalescence

#115
20100178537
2010-07-15

METHODS FOR FORMING MAGNETICALLY MODIFIED ELECTRODES AND ARTICLES PRODUCED THEREBY

#116
20100178507
2010-07-15

Polyamide Fine Fibers

#117
20100176068
2010-07-15

Web comprising fine fiber and reactive, adsorptive or absorptive particulate

#118
20100173068
2010-07-08

METHODS FOR FORMING MAGNETICALLY MODIFIED ELECTRODES AND ARTICLES PRODUCED THEREBY

#119
20100069816
2010-03-18

Biocompatible devices, systems, and methods for reducing levels of proinflammatory or antiinflammatory stimulators or mediators in the blood

#120
20100064645
2010-03-18

Fine fiber media layer

#121
20090321336
2009-12-31

FILTER FOR WATER POTABILIZATION AND A PROCESS FOR REALIZATION OF THE FILTER

#122
20090308800
2009-12-17

Water filter materials and water filters containing a mixture of microporous and mesoporous carbon particles

#123
20090293719
2009-12-03

Fractal structured nanoagglomerates as filter media

#124
20090291164
2009-11-26

Method for regenerating an auxiliary filtering agent

#125
20090242480
2009-10-01

FIBERS WITH BOUND METAL OXIDES AND METHOD THEREOF

#126
20090221047
2009-09-03

Method of converting cellulosic biomass to alcohol using web comprising fine fiber and bioactive particulate

#127
20090199717
2009-08-13

Filtration Medias, Fine Fibers Under 100 Nanometers, and Methods

#128
20090145842
2009-06-11

Micropulp for filters

#129
20090008323
2009-01-08

Water filter materials and water filters containing a mixture of microporous and mesoporous carbon particles

#130
20080257838
2008-10-23

CARTRIDGE BASED FILTER ASSEMBLY FOR USE IN REMOVING SUB MICRONIC PARTICLES FROM FLUIDS

#131
20080257753
2008-10-23

Grey Water Filtering System

#132
20080216648
2008-09-11

Biofilter

#133
20080149546
2008-06-26

Filter and system apparatus for removing sulfur-containing compounds from liquid fuels

#134
20080146741
2008-06-19

Method for producing polymer blends suited for use as filters

#135
20080121577
2008-05-29

Filter for composite water treatment and sewage treatment

#136
20080116121
2008-05-22

Reclamation unit for a liquid

#137
20080110822
2008-05-15

Fine fiber media layer

#138
20080108265
2008-05-08

High surface area fiber and textiles made from the same

#139
20080105612
2008-05-08

Composite filter media with high surface area fibers

#140
20080050802
2008-02-28

Biofilter

#141
20080014417
2008-01-17

Diamond-Covered Substrate, Filter And Electrode

#142
20070292429
2007-12-20

Biocompatible devices, systems, and methods for reducing levels of pro-inflammatory or anti-inflammatory stimulators or mediators in the blood

#143
20070271891
2007-11-29

Polymer, polymer microfiber, polymer nanofiber and applications including filter structures

#144
20070271883
2007-11-29

Bag house filter with fine fiber and spun bonded media

#145
20070144963
2007-06-28

Bacteria growth device, assembly including the same and method associated thereto

#146
20070144962
2007-06-28

Bacteria growth device, assembly including the same and method associated thereto

#147
20070130894
2007-06-14

Vacuum-cleaner bag and method for extending the service life of vacuum-cleaner bags

#148
20070093739
2007-04-26

Selective adsorption devices and systems

#149
20070045177
2007-03-01

Friction-charged filter material

#150
20070012007
2007-01-18

Polymer, polymer microfiber, polymer nanofiber and applications including filter structures

#151
20060260996
2006-11-23

METHOD AND APPARATUS FOR COMBINED FILTRATION AND ANTI-MICROBIAL TREATMENT OF STORM WATER RESIDENT IN STORM WATER SYSTEMS

#152
20060231486
2006-10-19

Filtration element having a variable density sidewall

#153
20060113241
2006-06-01

Buoyant filter media

#154
20060091068
2006-05-04

Derivatized cellulose filtration media and method for producing same

#155
20060057142
2006-03-16

Biocompatible devices, systems, and methods for reducing levels of pro-inflammatory or anti-inflammatory stimulators or mediators in the blood

#156
20050279696
2005-12-22

Water filter materials and water filters containing a mixture of microporous and mesoporous carbon particles

#157
20050239041
2005-10-27

Devices, systems, and methods for reducing levels of pro-inflammatory or anti-inflammatory stimulators or mediators in blood products

#158
20050189292
2005-09-01

Bicomponent fiber wick

#159
20050189285
2005-09-01

Filter aid used in alluviation

#160
20050145579
2005-07-07

Use of polymers comprising thermoplastic polymers as filtration aids and/or stabilising agent

#161
20050061742
2005-03-24

Devices, systems, and methods for reducing levels of pro-inflammatory or anti-inflammatory stimulators or mediators in physiologic fluids

#162
20050016927
2005-01-27

Filter apparatus for removing sulfur-containing compounds from liquid fuels, and methods of using same

#163
20050016376
2005-01-27

Filtration media

#164
20050002833
2005-01-06

Filtration media

#165
17746246
2023-02-21

Lightweight fibrous media (LFM) filter

#166
15889207
2020-06-16

Method for filtering contaminated water

#167
15884387
2020-06-09

Method and apparatus for filtering contaminated water

#168
14120100
2016-03-08

Assembly for treating flowing water