ClassID:

29337

B01D35/301 - CPC Classification

Classification description:

Other filtering devices; Auxiliary devices for filtration; Filter housing constructions; Filter housing constructions Constructions of two or more housings

Sub-classes:
Recent Application in this class:
#1
20260061343
2026-03-05

WATER FILTER WITH REPLACEABLE ACTIVE COMPONENTS

#2
20250312714
2025-10-09

AIR FILTER SYSTEM

#3
20250177894
2025-06-05

FILTER DEVICE

#4
20240042355
2024-02-08

MODULAR FILTRATION PLATFORM

#5
20230115880
2023-04-13

WATER PURIFYING FILTER ASSEMBLY

#6
20230018094
2023-01-19

Laundry washing machine

#7
20220410044
2022-12-29

MULTI-FUNCTIONAL FILTRATION APPARATUS AND METHOD

#8
20220266179
2022-08-25

Compact vehicle filter head

#9
20220249991
2022-08-11

Filter media insert structures and methods of installation

#10
20220212970
2022-07-07

Filter module for water dispensing device

#11
20210308607
2021-10-07

Modular filtration platform

#12
20210260511
2021-08-26

Connector assembly, filter assembly, filter device, and method of use

#13
20200406173
2020-12-31

Filter media insert structures and methods of installation

#14
20200267948
2020-08-27

Water purification system and filtration block

#15
20200222835
2020-07-16

Filter element assembly with sealing element and filter system

#16
20190388814
2019-12-26

Valve-sensor assembly

#17
20190358569
2019-11-28

Filter device

#18
20190282938
2019-09-19

Modular filtration platform

#19
20190275450
2019-09-12

Manifold for domestic water purifier system with specific cartridge replacement

#20
20190224594
2019-07-25

PORTABLE FILTERING APPARATUS AND SYSTEM

#21
20190168141
2019-06-06

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

#22
20190054402
2019-02-21

Filter assembly with self-contained disposable filter cartridge

#23
20190047874
2019-02-14

Water filtration system

#24
20190030461
2019-01-31

Fluid degassing systems

#25
20190030459
2019-01-31

FLUID DEGASSING SYSTEMS

#26
20190009192
2019-01-10

Composite filter cartridge

#27
20180283027
2018-10-04

Pool cleaner

#28
20180193785
2018-07-12

High pressure filter

#29
20180161710
2018-06-14

Filter device

#30
20180119393
2018-05-03

MULTIPURPOSE WATER TANK HAVING IMPROVED FILTERING FUNCTION

#31
20180111072
2018-04-26

Filter device

#32
20180050926
2018-02-22

Multi-stage filter assembly

#33
20180016161
2018-01-18

Liquid treatment cartridge, set of such cartridges and method of manufacturing it

#34
20180001237
2018-01-04

Reusable filter system

#35
20170259196
2017-09-14

Modular filtration platform

#36
20160361672
2016-12-15

Fuel filter for vehicle

#37
20160195053
2016-07-07

Fluid conditioning module

#38
20150252934
2015-09-10

Adjustable frame assemblies, methods for assembling a filter apparatus, and filter apparatuses

#39
20150108058
2015-04-23

Filtration device

#40
20150108050
2015-04-23

Capsule body attachment

#41
20140217003
2014-08-07

Dual cartridge filter stabilizer

#42
20140134079
2014-05-15

Syringeless filter device compressor

#43
20130081989
2013-04-04

Liquid filtration systems, components, and methods

#44
20110203985
2011-08-25

KEYED SYSTEM FOR CONNECTION OF FILTER TO FILTER HOLDER

#45
20110147298
2011-06-23

Annular collar for encapsulated water treatment system

#46
20110120960
2011-05-26

Processes for water and wastewater treatment, Including stationary cloth media filtration

#47
20100307967
2010-12-09

Filtration device

#48
20100300957
2010-12-02

Backwash assembly having a rotating backwash arm for cleaning cloth filter media

#49
20100294709
2010-11-25

Fluid treatment arrangements and methods for operating fluid treatment arrangements

#50
20100237001
2010-09-23

Encapsulated water treatment system

#51
20100237000
2010-09-23

Modular system for coupling water filter manifold heads

#52
20100191497
2010-07-29

Computer-implemented method of monitoring the performance of a reverse osmosis membrane in a drinking water supply system

#53
20100154754
2010-06-24

Systems and methods for filtering fuel

#54
20100140158
2010-06-10

Water treatment apparatus with easy filter replacement construction

#55
20100031615
2010-02-11

Systems and methods for filtering fuel

#56
20090308799
2009-12-17

Water filter housing cap

#57
20090289003
2009-11-26

Water treatment apparatus with easy filter replacement construction

#58
20080203033
2008-08-28

Encapsulated water treatment system

#59
20080164220
2008-07-10

Fluid treatment arrangements and methods for operating fluid treatment arrangements

#60
20080156713
2008-07-03

Curb inlet filter

#61
20080121582
2008-05-29

FILTER RECYCLING UNIT

#62
20080101856
2008-05-01

Assemblies for coupling two elements and coupled assemblies

#63
20080099388
2008-05-01

Combination filter for a lubrication system

#64
20080041777
2008-02-21

Filter device having filter member easily changing structure

#65
20080011666
2008-01-17

Backwash assembly and method having a rotating backwash arm for cleaning cloth filter media

#66
20070163930
2007-07-19

Multiple barrier filter apparatus

#67
20070158258
2007-07-12

MULTIPLE FLOW INTEGRAL FILTRATION MANIFOLD

#68
20070131602
2007-06-14

Quick change filter and bracket system with key system and universal key option

#69
20070125695
2007-06-07

Device for separating water and filtering impurities out of fuel

#70
20060113240
2006-06-01

Filter cartridge and manifold for a water purification system

#71
20060070947
2006-04-06

Method and apparatus for treating water

#72
20060065607
2006-03-30

Counter top water filtration system

#73
20060032202
2006-02-16

Quick change filter and bracket with key system and universal key option

#74
20060000754
2006-01-05

Water shut-off device for a water purifier

#75
20050205484
2005-09-22

Filter element, particularly for the static or dead-end filtration of fluids, and corresponding filter device

#76
20050178711
2005-08-18

Quick change fitter and bracket system with key system and universal key option

#77
20050173331
2005-08-11

Oil filtration vessel

#78
20050167352
2005-08-04

Filter cartridge and manifold for a water purification system

#79
20050115911
2005-06-02

Processes for water and wastewater treatment, including stationary cloth media filtration

#80
20050098492
2005-05-12

Modular multi-stage water filtration system

#81
17551534
2023-09-12

Water filter support bracket

#82
17166182
2023-09-19

Portable liquid filter devices, systems and methods

#83
17145676
2023-05-02

Multi-stage filter assembly