ClassID:

30107

B01D2201/307 - CPC Classification

Classification description:

Details relating to filtering apparatus; Filter housing constructions Filtering elements contained in an insert body mounted in a filter housing (double casing), e.g. to avoid contamination when removing or replacing the filter element

Recent Application in this class:
#1
20260138056
2026-05-21

In-Pipe Stormwater Treatment Unit Best Management Practice (I-STUB)

#2
20260061343
2026-03-05

WATER FILTER WITH REPLACEABLE ACTIVE COMPONENTS

#3
20250387737
2025-12-25

SORBENT INDOOR AIR PURIFIER

#4
20250352928
2025-11-20

Water Filter System and Method

#5
20250242282
2025-07-31

FILTERING APPARATUS FOR REMOVING FOREIGN METAL SUBSTANCES FROM A SLURRY FOR MANUFACTURING AN ELECTRODE PLATE FOR A BATTERY

#6
20250186914
2025-06-12

PROTECTIVE INSULATIVE ENCLOSURES

#7
20250073620
2025-03-06

Water Quality Purification Assembly and Refrigeration Device

#8
20240207770
2024-06-27

FILTER ELEMENT WITH CONVERTIBLE END CAP AND METHODS

#9
20230201748
2023-06-29

Filter press with threadably advanced filtrate receiving plunger

#10
20230182047
2023-06-15

Filter with inner container arrangement

#11
20230018113
2023-01-19

SORBENT INDOOR AIR PURIFIER

#12
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

#13
20220355232
2022-11-10

PROCESS TO MAKE A CERAMIC FILTER FOR METAL CASTING

#14
20220249991
2022-08-11

Filter media insert structures and methods of installation

#15
20220193578
2022-06-23

WATER FILTER AND WATER FILTRATION APPARATUS

#16
20220062805
2022-03-03

Fluid purification device

#17
20220008846
2022-01-13

Device for separating solid materials from liquids and gases

#18
20210402333
2021-12-30

FILTER ASSEMBLY

#19
20210402332
2021-12-30

Filter assembly

#20
20210178298
2021-06-17

LIQUID FILTER

#21
20210138375
2021-05-13

Modular filtration system and method

#22
20210129051
2021-05-06

Filter with inner container arrangement

#23
20210086110
2021-03-25

Filter cover protection against external contamination

#24
20210077928
2021-03-18

Side Leakage Prevention and Environmentally-Friendly Filter Element

#25
20210069620
2021-03-11

Intermediate cover of a filter housing of a filter for purifying liquid fluids and filter insert, filter and use

#26
20210018487
2021-01-21

Plasma separation device

#27
20200406173
2020-12-31

Filter media insert structures and methods of installation

#28
20200353390
2020-11-12

Double filtration broom vacuum cleaner for swimming pool cleaning

#29
20200339437
2020-10-29

Eco-friendly water filtration apparatus

#30
20200277974
2020-09-03

Pressure control device

#31
20200238200
2020-07-30

Basket-style solids interceptor

#32
20200206656
2020-07-02

Filters

#33
20200139280
2020-05-07

Water purifying filter

#34
20200129898
2020-04-30

Filter assembly for a refrigerator appliance

#35
20190391130
2019-12-26

Plasma separation device

#36
20190374882
2019-12-12

Device for separating solid particles from liquids and gases

#37
20190193006
2019-06-27

Fluid purification device

#38
20190193000
2019-06-27

GLASS CARTRIDGE FILTERS ESPECIALLY USEFUL AS PART OF WATER-CIRCULATION SYSTEMS OF SWIMMING POOLS OR SPAS

#39
20190168141
2019-06-06

Filter housing that accepts both single open end o-ring and double open end filter elements

#40
20190070535
2019-03-07

Fluid purification device

#41
20180021707
2018-01-25

Housing module of a fluid treatment module and fluid treatment module

#42
20170197160
2017-07-13

Filter system, closure element, and filter element

#43
20170080367
2017-03-23

BAGGED FILTER CARTRIDGE, SYSTEM AND METHOD

#44
20170056798
2017-03-02

System and method of a pool filter operation

#45
20170028328
2017-02-02

WATER FILTER AND MANIFOLD

#46
20160271535
2016-09-22

Filter assembly

#47
20160214048
2016-07-28

Inline pre-filter for aspirated detectors

#48
20160214042
2016-07-28

Filtration system

#49
20150136677
2015-05-21

Filter box, a fuel circuit for feeding fuel to an engine, and an aircraft

#50
20150122724
2015-05-07

Filtration system

#51
20140124054
2014-05-08

Case structure for fluid pressure device

#52
20130240431
2013-09-19

Filtration system

#53
20130186841
2013-07-25

Bagged filter cartridge, system and method

#54
20130186815
2013-07-25

Filters

#55
20120152820
2012-06-21

Filter

#56
20120042677
2012-02-23

Refrigerator water filter assembly

#57
20120018364
2012-01-26

Filter device

#58
20100264100
2010-10-21

Bagged filter cartridge, system and methods

#59
20090230050
2009-09-17

Filter Assembly Sump Liner

#60
20090166301
2009-07-02

Systems and methods for filtering fuel

#61
20080190837
2008-08-14

Filter module and filter device

#62
20080023389
2008-01-31

Replaceable filter element with integral annular trap

#63
20070131608
2007-06-14

Oil filter

#64
20070119766
2007-05-31

Pressure vessel and recyclable filter cartridge

#65
20070039870
2007-02-22

Cartridge filter

#66
20060219626
2006-10-05

Filter system with canister filter element

#67
20060201872
2006-09-14

High capacity depth filter bag

#68
20060151379
2006-07-13

Arrangement for containing filter contaminant; assembly; and, methods

#69
20050000867
2005-01-06

Water filtering apparatus