ClassID:

30094

B01D2201/29 - CPC Classification

Classification description:

Details relating to filtering apparatus Filter cartridge constructions

Sub-classes:
Recent Application in this class:
#1
20260115632
2026-04-30

FILTER CARTRIDGE FOR AQUARIUM; AND METHODS

#2
20260110668
2026-04-23

FILTER ASSEMBLIES, DEPTH INDICATORS, TORQUE-LIMITING FITTINGS, TORQUE-INDICATING FITTINGS, AND SYSTEMS INCORPORATING THE SAME

#3
20260077281
2026-03-19

FILTER FOR HYDRAULIC FLUIDS FOR HYDRAULIC CIRCUITS

#4
20260042040
2026-02-12

FUEL FILTER

#5
20250360441
2025-11-27

Filter Device for Cutting Fluid, Cleaning Method for Filter Device, and Filter Circulation System

#6
20250352931
2025-11-20

MECHANICAL INTERLOCK SYSTEM FOR A FILTER

#7
20250269308
2025-08-28

AIR DRYER CARTRIDGE, OIL FILTER, KIT, AIR DRYER, AND METHOD OF ASSEMBLING AN AIR DRYER

#8
20250161853
2025-05-22

AIR CLEANER ASSEMBLIES AND METHODS OF USE

#9
20250073625
2025-03-06

FAUCET

#10
20250050246
2025-02-13

A FILTER MEDIUM CONTAMINATION DETECTION STRUCTURE, A FILTER DEVICE, AND A FILTER WITH ABNORMAL WARNING FUNCTION

#11
20250018321
2025-01-16

MECHANICAL INTERLOCK SYSTEM FOR A FILTER

#12
20240416262
2024-12-19

INSET-MOUNTED WATER FILTRATION SYSTEM

#13
20240278150
2024-08-22

PLANT AND METHOD FOR RECYCLING AND FILTERING ROLLING OIL

#14
20240252968
2024-08-01

SORPTION FILTER CARTRIDGE AND SORPTION FILTER ELEMENT

#15
20240175278
2024-05-30

Hot Tub Filterwell Dispersant Technology

#16
20240173657
2024-05-30

FILTER INTERCONNECT USING A MAGNETIC SHEAR FORCE

#17
20240157276
2024-05-16

Filter Apparatus with Pivotable Filter Cartridge

#18
20230415079
2023-12-28

MECHANICAL INTERLOCK SYSTEM FOR A FILTER

#19
20230390682
2023-12-07

Air cleaner assemblies and methods of use

#20
20230263334
2023-08-24

Cartridge Extraction Unit For Water Purifier

#21
20230166204
2023-06-01

ELEMENT OF, CARTRIDGE AND CONTAINER WITH, FILTER FOR SLURRY

#22
20230149837
2023-05-18

FILTER CARTRIDGE, AND METHOD OF RETROFITTING FILTER HOUSING

#23
20230134445
2023-05-04

FILTER CARTRIDGE ASSEMBLY

#24
20230110390
2023-04-13

FILTER ASSEMBLIES, DEPTH INDICATORS, TORQUE-LIMITING FITTINGS, TORQUE-INDICATING FITTINGS, AND SYSTEMS INCORPORATING THE SAME

#25
20230104919
2023-04-06

Pool filter core

#26
20220379248
2022-12-01

Mechanical interlock system for a filter

#27
20220363569
2022-11-17

Water treatment dispensing apparatus

#28
20220282422
2022-09-08

BI-DIRECTIONAL RECIRCULATING FILTRATION AND REMOVEABLE FILTRATION APPARATUS FOR LAUNDRY TREATING APPLIANCES

#29
20220203274
2022-06-30

System and method for a filter system

#30
20220193579
2022-06-23

STAR PLEATING WITH INSIDE OUT FLOW HAVING WATER DRAINAGE THROUGH THE CENTER

#31
20220161167
2022-05-26

FILTER WITH SHIELDED INTERNAL GASKET

#32
20220161165
2022-05-26

Filter assembly for ice making appliance

#33
20220161159
2022-05-26

Device for Separating Debris From a Fluid

#34
20220105455
2022-04-07

MULTISTAGE FILTER CARTRIDGE

#35
20220040399
2022-02-10

Fat cutter and integrated machine for preparation of in vitro fine-particle fat

#36
20220032214
2022-02-03

SUBTERRANEAN GRAVITY-FLOW GRAYWATER FILTRATION APPARATUS AND SYSTEM

#37
20220023777
2022-01-27

Filter-attached cartridge

#38
20210402333
2021-12-30

FILTER ASSEMBLY

#39
20210402332
2021-12-30

Filter assembly

#40
20210379513
2021-12-09

WATER FILTER CARTRIDGE AND HEAD HAVING KEYED ENGAGEMENT

#41
20210340026
2021-11-04

Reverse osmosis prefilter system

#42
20210331103
2021-10-28

Filter interconnect using a magnetic shear force

#43
20210331101
2021-10-28

LIQUID ELIMINATING CARTRIDGE

#44
20210283552
2021-09-16

Isolation chip for isolating target particles from liquid sample, and device and method for detecting the target particles

#45
20210231353
2021-07-29

Water-cooled heat exchanger

#46
20210086121
2021-03-25

Air cleaner assemblies and methods of use

#47
20200406177
2020-12-31

FUEL FILTER

#48
20200406176
2020-12-31

Fuel filter

#49
20200353389
2020-11-12

Oil sequestering spin-on cartridge

#50
20200277920
2020-09-03

Water separation group

#51
20200254366
2020-08-13

WATER FILTER CARTRIDGE WITH SLANTED NOZZLES

#52
20200206658
2020-07-02

System and method for a filter system

#53
20200198992
2020-06-25

Water-purification cartridge and water purifier

#54
20200197846
2020-06-25

FILTER CARTRIDGE CONNECTING STRUCTURE FOR WATER PURIFIER

#55
20200179833
2020-06-11

Filter system, filter, and method

#56
20200009482
2020-01-09

Water filter cartridge having an air vent

#57
20190374880
2019-12-12

Filter design with interchangeable core cover

#58
20190366257
2019-12-05

Filter component

#59
20190345040
2019-11-14

Water-purification cartridge and water purifier

#60
20190201818
2019-07-04

Backflushing filter

#61
20190168141
2019-06-06

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

#62
20190134539
2019-05-09

Filter cartridge having double water-stop function

#63
20190076757
2019-03-14

System and method for a filter system

#64
20190009192
2019-01-10

Composite filter cartridge

#65
20180361298
2018-12-20

Air filter cartridge with internal structure

#66
20180345196
2018-12-06

Air cleaner assemblies and methods of use

#67
20180318734
2018-11-08

Multiple cartridge fluid filter canister

#68
20180264382
2018-09-20

Filter design with interchangeable core cover

#69
20180244541
2018-08-30

WATER FAUCET HAVING A CAPSULE-BASED FILTER

#70
20180161711
2018-06-14

Filter assembly

#71
20180140985
2018-05-24

Methods and apparatuses for missing filter detection and prevention in rotating coalescer designs

#72
20180050924
2018-02-22

Oil water separator filter cartridge to housing engagement

#73
20170173503
2017-06-22

Filter device

#74
20170087484
2017-03-30

Liquid processing apparatus

#75
20170065916
2017-03-09

Filter cartridge and filter group with water sensor fixed to the filter core

#76
20170030384
2017-02-02

Filter for hydraulic fluids for hydraulic circuits and process of making the same

#77
20160175743
2016-06-23

Water filter cartridge with slanted nozzles

#78
20160023135
2016-01-28

Water separation filter

#79
20150367265
2015-12-24

Filter appliance

#80
17566815
2022-04-26

Water filter system head with interchangeable inlet and outlet connections

#81
16165347
2019-07-30

Foldable multi-stage water filter system

#82
14719029
2017-08-22

Water filter cartridge with slanted nozzles