B03C3/28 - CPC Classification Index

ClassID:

35585 ⎘

B03C3/28 - CPC Classification

Classification description:

Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect Plant or installations without electricity supply, e.g. using electrets

Sub-classes:

B03C3/30 » in which electrostatic charge is generated by passage of the gases, i.e. tribo-electricity 61

Recent Application in this class:

20260115638

2026-04-30

ELECTRET-CONTAINING FILTER MEDIA

20260078245

2026-03-19

POLYETHYLENE RESIN COMPOSITION, MELTBLOWN NONWOVEN FABRIC USING THE SAME, AND ELECTRET MATERIAL

20250099977

2025-03-27

METHOD FOR MANUFACTURING ELECTROSTATIC FILTER AND FILM FOR PATHOGEN INACTIVATION

20230233966

2023-07-27

ELECTRET FIBER SHEET, LAMINATE SHEET, AND FILTER

20230151537

2023-05-18

FOREIGN SUBSTRATE COLLECTOR FOR A LAUNDRY APPLIANCE

20220396684

2022-12-15

SUBSTITUTED BENZIMIDAZOLE MELT ADDITIVES

20220380574

2022-12-01

DUAL-FUNCTION MELT ADDITIVES

20220054961

2022-02-24

ELECTRET-CONTAINING FILTER MEDIA

20220023884

2022-01-27

ENGINE EXHAUST DUST REMOVAL SYSTEM AND METHOD

#10

20220023879

2022-01-27

DUST REMOVAL SYSTEM AND METHOD FOR ENGINE EXHAUST GAS

#11

20220023878

2022-01-27

SYSTEM AND METHOD FOR REMOVING DUST FROM AIR

#12

20220023877

2022-01-27

AIR DUST REMOVAL SYSTEM AND METHOD

#13

20220016644

2022-01-20

AIR DUST REMOVAL SYSTEM AND METHOD

#14

20220016641

2022-01-20

ENGINE EMISSION TREATMENT SYSTEM AND METHOD

#15

20210394198

2021-12-23

AIR DUST REMOVAL SYSTEM AND METHOD

#16

20210310166

2021-10-07

FIBER STRUCTURE AND APPLICATION THEREOF

#17

20210229111

2021-07-29

Unit for electrostatic filter and electrostatic filter

#18

20210178304

2021-06-17

Electret-containing filter media

#19

20210063962

2021-03-04

Image forming apparatus with particle collector

#20

20210001255

2021-01-07

Electretized sheet and filter

#21

20200188931

2020-06-18

ELECTRONIC DEVICE WITH ADVANCED CONTROL FEATURES

#22

20200023299

2020-01-23

REMOTE FLUORINATION OF FIBROUS FILTER WEBS

#23

20200009489

2020-01-09

ELECTRET-TREATED SHEET AND FILTER

#24

20190344288

2019-11-14

Filter

#25

20180310761

2018-11-01

Grilling machine

#26

20180272259

2018-09-27

Electret and electret filter

#27

20180266922

2018-09-20

Particulate air sampling using ferroelectric materials

#28

20180258693

2018-09-13

Window blinds that collect dust from air using electrostatic charge

#29

20180236389

2018-08-23

Electret-containing filter media

#30

20180236384

2018-08-23

Electret-containing filter media

#31

20180193678

2018-07-12

Air purifier having an electret module

#32

20180056219

2018-03-01

FILTER MATERIAL FOR AIR FILTER

#33

20170350049

2017-12-07

Electrically charged nonwoven fabric, filtration material including same, and method for producing electrically charged nonwoven fabric

#34

20170282192

2017-10-05

Electrostatic Filter

#35

20170189914

2017-07-06

Filtration materials using fiber blends that contain strategically shaped fibers and/or charge control agents

#36

20170120254

2017-05-04

Air-filter arrangement

#37

20170113170

2017-04-27

Electret

#38

20170080369

2017-03-23

Remote fluorination of fibrous filter webs

#39

20160369451

2016-12-22

HYDROPHILIC ELECTRET MEDIA

#40

20160325224

2016-11-10

Compressed air drying device

#41

20160250649

2016-09-01

Filter

#42

20160175753

2016-06-23

Filtering medium for deodorizing filter

#43

20160067717

2016-03-10

Electret webs with charge-enhancing additives

#44

20150265957

2015-09-24

Framed air filter with integrated nestable joint

#45

20150246362

2015-09-03

HYDROPHILIC ELECTRET MEDIA

#46

20150226441

2015-08-13

FILTRATION MATERIALS USING FIBER BLENDS THAT CONTAIN STRATEGICALLY SHAPED FIBERS AND/OR CHARGE CONTROL AGENTS

#47

20150196924

2015-07-16

Recirculation filter for an electronic enclosure

#48

20150137415

2015-05-21

Filtration materials using fiber blends that contain strategically shaped fibers and/or charge control agents

#49

20150110957

2015-04-23

Filtration materials using fiber blends that contain strategically shaped fibers and/or charge control agents

#50

20150107457

2015-04-23

Electret nanofibrous web as air filtration media

#51

20150024148

2015-01-22

REMOTE FLUORINATION OF FIBROUS FILTER WEBS

#52

20140373717

2014-12-25

Integrated-structure electrostatic dust collection device and electret processing technique thereof

#53

20140366732

2014-12-18

Filter media and elements

#54

20140305306

2014-10-16

Mixed-fiber nonwoven fabric and filter medium using the same

#55

20140305090

2014-10-16

Mixed-fiber nonwoven fabric, laminated sheet and filter, and process for producing mixed-fiber nonwoven fabric

#56

20140165515

2014-06-19

Blended filament nonwoven fabric

#57

20140157572

2014-06-12

Framed air filter and method of making

#58

20140150797

2014-06-05

Air purifier having an electret module

#59

20130180222

2013-07-18

Dust removal device

#60

20130168893

2013-07-04

CHARGING OF FILTER MEDIA

#61

20130097803

2013-04-25

Surface treating appliance

#62

20120317944

2012-12-20

Framed air filter and method of making

#63

20120279392

2012-11-08

Air purification system and method for cleaning air

#64

20120222940

2012-09-06

Method and apparatus for transporting magnetic fluids and particles

#65

20120103191

2012-05-03

Air purification system and method for cleaning air

#66

20120097035

2012-04-26

Filtration materials using fiber blends that contain strategically shaped fibers and/or charge control agents

#67

20110308386

2011-12-22

EFFICIENCY-ENHANCED GAS FILTER MEDIUM

#68

20110275971

2011-11-10

ELECTROSTATICALLY CHARGED BIOCIDAL MEDIA AND APPLICATIONS THEREFOR

#69

20110219954

2011-09-15

Electrically enhanced air filtration system using rear fiber charging

#70

20110162653

2011-07-07

REMOTE FLUORINATION OF FIBROUS FILTER WEBS

#71

20100313890

2010-12-16

PROTECTIVE MASK WITH BREATHABLE FILTERING FACE SEAL

#72

20100252047

2010-10-07

REMOTE FLUORINATION OF FIBROUS FILTER WEBS

#73

20100154633

2010-06-24

ELECTRO-KINETIC AIR TRANSPORTER WITH MECHANISM FOR VIBRATORY CLEANING OF EMITTER ELECTRODE

#74

20100147150

2010-06-17

Electro-kinetic air transporter with mechanism for emitter electrode travel past cleaning member

#75

20100077926

2010-04-01

Dust capture device and projection type image display apparatus

#76

20100009166

2010-01-14

ELECTRET FINISH

#77

20080276805

2008-11-13

Vehicle Passenger Compartment Air Filter Devices

#78

20080264554

2008-10-30

Electrostatically charged filter media incorporating an active agent

#79

20060251879

2006-11-09

Electrostatically charged filter media incorporating an active agent

#80

20060144403

2006-07-06

Facemask with filtering closure

#81

20050210902

2005-09-29

Electro-kinetic air transporter and/or conditioner devices with features for cleaning emitter electrodes

#82

20050039677

2005-02-24

Method of charging and distributing particles

#83

20050000197

2005-01-06

System and method for removing pollutants from a roadway