ClassID:

30080

B01D2201/188 - CPC Classification

Classification description:

Details relating to filtering apparatus; Filters characterised by the openings or pores Multiple filtering elements having filtering areas of different size

Recent Application in this class:
#1
20250381503
2025-12-18

FILTER

#2
20250352928
2025-11-20

Water Filter System and Method

#3
20250352927
2025-11-20

PLEATED FLUID FILTER ELEMENT AND METHODS

#4
20250276260
2025-09-04

FILTER SYSTEM FOR FILTERING FLUIDS

#5
20250108319
2025-04-03

HYDRAULIC FLUID FILTER WITH INTEGRATED BYPASS

#6
20250001335
2025-01-02

System and Method for Ice Bath Filtering

#7
20240224957
2024-07-11

Recirculation aquaculture system and method

#8
20240131453
2024-04-25

Pleated fluid filter element and methods

#9
20230225941
2023-07-20

FLEXIBLE BAG FOR THE PREPARATION OF ADIPOSE TISSUE GRAFTS AND RELATIVE KIT

#10
20220339564
2022-10-27

Multi-structure filtration device for filtering, separating, and dehydrating foreign substances in water

#11
20220339561
2022-10-27

Pleated fluid filter element and methods

#12
20220168672
2022-06-02

MULTI-LAYERED FILTER FOR SEPARATING BLOOD COMPONENTS AND DISEASE DIAGNOSIS KIT USING THE SAME

#13
20220143533
2022-05-12

FILTER ELEMENT FOR A FILTER UNIT

#14
20210008474
2021-01-14

Coalescing filter element and filter assembly therefore

#15
20200368650
2020-11-26

Engine oil system and a lid

#16
20200368647
2020-11-26

Suction filter for liquids

#17
20200291732
2020-09-17

Filtration System for Use in a Shale Shaker

#18
20200276525
2020-09-03

Pleated fluid filter element and methods

#19
20200206657
2020-07-02

Filter device

#20
20200182207
2020-06-11

SLEEVE FOR A FILTER ASSEMBLY

#21
20190192070
2019-06-27

Apparatus and method for monitoring medication adherence

#22
20190176069
2019-06-13

FILTER ELEMENT OF A FILTER, MULTILAYER FILTER MEDIUM OF A FILTER AND FILTER

#23
20190160399
2019-05-30

Pleated filter element having an additional structure

#24
20190118120
2019-04-25

SAMPLING FILTER, SAMPLING DEVICE, AND SAMPLING METHOD USING THE SAME

#25
20180296159
2018-10-18

Method and apparatus for monitoring medication adherence

#26
20180291780
2018-10-11

Filter device for an oil filter

#27
20180272255
2018-09-27

Filter media suitable for hydraulic applications

#28
20180154290
2018-06-07

Gravity-fed water purification system

#29
20180140976
2018-05-24

Autonomous filtration switch

#30
20180119393
2018-05-03

MULTIPURPOSE WATER TANK HAVING IMPROVED FILTERING FUNCTION

#31
20180104628
2018-04-19

Suction strainer

#32
20180043374
2018-02-15

Particle separating system

#33
20170326484
2017-11-16

Coalescing filter element and filter assembly therefore

#34
20170203238
2017-07-20

TARGET GENERATION DEVICE, AND METHOD FOR MANUFACTURING FILTER STRUCTURE

#35
20170042472
2017-02-16

Method and apparatus for monitoring medication adherence

#36
20160210501
2016-07-21

Method and apparatus for monitoring medication adherence

#37
20150290561
2015-10-15

Pleated fluid filter element and methods

#38
20150283486
2015-10-08

Fluid filtration apparatus and method

#39
20150265950
2015-09-24

Dual media oil filter

#40
20150182893
2015-07-02

Filter media suitable for hydraulic applications

#41
20150182885
2015-07-02

Filter media suitable for hydraulic applications

#42
20140311963
2014-10-23

Coalescing filter element and filter assembly therefore

#43
20140151129
2014-06-05

Sieve cloth and method of using same

#44
20140131114
2014-05-15

Sieve cloth and method of using same

#45
20130306548
2013-11-21

Filter element having at least one mat-type or sheet-type filter web

#46
20130026107
2013-01-31

Methods and apparatuses for filtering water from a river or stream

#47
20120086827
2012-04-12

Apparatus and method for assisting monitoring of medication adherence

#48
20120024774
2012-02-02

Filter medium and filter element

#49
20110284442
2011-11-24

Pond Post-Vacuuming Filtration Bag

#50
20110283513
2011-11-24

Integrity testable multilayered filter device

#51
20110266208
2011-11-03

Methods and apparatuses for filtering water from a river or stream

#52
20110259838
2011-10-27

System for engine oil storage and filtration in an internal combustion engine

#53
20110259837
2011-10-27

Method for selective partition capacity based filtering

#54
20110079553
2011-04-07

Filter media suitable for hydraulic applications

#55
20110049041
2011-03-03

FUEL FILTER ELEMENT

#56
20100252510
2010-10-07

Filter media suitable for hydraulic applications

#57
20100193427
2010-08-05

Filtration element having a variable density sidewall

#58
20100140191
2010-06-10

METHOD AND APPARATUS FOR SEPARATION OF SOLIDS AND LIQUID SUSPENSIONS BY FILTER UNCLOGGING AIDED FILTRATION

#59
20100044301
2010-02-25

Filter device

#60
20100038302
2010-02-18

Filter device and method of producing the same

#61
20100006483
2010-01-14

Replaceable filter elements including unique pressure relief and systems including same

#62
20090321347
2009-12-31

Fuel filter device

#63
20090261029
2009-10-22

Fluid filtration apparatus and method

#64
20090200224
2009-08-13

COMBINATION FILTER FOR DIESEL FUEL

#65
20090114609
2009-05-07

Methods and apparatuses for filtering water from oil and gas wells

#66
20090107930
2009-04-30

Methodology for filtering a fluid using a plurality of surface filtration mediums

#67
20090101596
2009-04-23

Selective partitioning capacity based filter media

#68
20090008305
2009-01-08

Secondary filtration device applicable to a three-phase process

#69
20080308488
2008-12-18

Filter Apparatus and Filter Body

#70
20080169227
2008-07-17

Liquid filter assembly

#71
20080149559
2008-06-26

Filter device and method for manufacturing the same

#72
20080038139
2008-02-14

Titanium powder sintered compact

#73
20070292935
2007-12-20

Method and Apparatus for Separation of Solids and Liquid Suspensions by Filter Unclogging Aided Filtration

#74
20070246420
2007-10-25

Fuel filter device

#75
20070216051
2007-09-20

Automotive Fluid Filter with Sintered Pellet Filter Medium and Associated Method

#76
20070215559
2007-09-20

Automotive Fluid Filter with Sintered Pellet Filter Medium and Associated Method

#77
20070151906
2007-07-05

Temperature pressure controlled flow rate

#78
20070131598
2007-06-14

Methods and apparatuses for filtering water

#79
20070080104
2007-04-12

Integrity testable multilayered filter device

#80
20070062859
2007-03-22

Graded particle-size retention filter medium for fluid filtration unit with improved edge seal

#81
20060266701
2006-11-30

Gradient density depth filtration system

#82
20060266699
2006-11-30

Titanium powder sintered compact

#83
20060266698
2006-11-30

Titanium powder sintered compact

#84
20060266697
2006-11-30

Titanium powder sintered compact

#85
20060230727
2006-10-19

Filtration element having a variable density sidewall

#86
20060191839
2006-08-31

High capacity filter element

#87
20060180530
2006-08-17

Methods and apparatuses for filtering water

#88
20060157256
2006-07-20

Unsintered mesh sand control screen

#89
20060156701
2006-07-20

Filter elements for filters

#90
20060124527
2006-06-15

Filter devices including a porous body

#91
20060091084
2006-05-04

Fluted filter media with intermediate flow restriction and method of making same

#92
20060081523
2006-04-20

Device for separating impurities from liquids and a cleaning device

#93
20060043027
2006-03-02

Automotive fluid filter with sintered pellet filter medium and associated method

#94
20060037906
2006-02-23

Liquid filter assembly

#95
20060006110
2006-01-12

Filter cartridge and an assembly of a filter housing and at least one such filter cartridge

#96
20050284823
2005-12-29

Cooking oil filter element and method

#97
20050279695
2005-12-22

Disposable integral filter unit

#98
20050279694
2005-12-22

Disposable integral filter unit

#99
20050252838
2005-11-17

Fluid filtration apparatus and method

#100
20050230325
2005-10-20

Methods and apparatuses for filtering water

#101
20050211609
2005-09-29

Hydraulic filter assembly with priority valve

#102
20050210844
2005-09-29

Filter material construction and method

#103
20050199283
2005-09-15

Hydraulic filter assembly with priority valve

#104
20050167353
2005-08-04

Graded particle-size retention filter medium for fluid filtration unit with improved edge seal

#105
20050139543
2005-06-30

Product and method of forming successive layers of face-to-face adjacent media with calculated pore size

#106
20050061729
2005-03-24

Filter module and process for the production of a filled filter module

#107
20050061723
2005-03-24

Filter unit

#108
20050035033
2005-02-17

Methods for sealing screen assemblies on vibratory separators

#109
20050023201
2005-02-03

Fuel filter device

#110
20050000865
2005-01-06

Screen assemblies and vibratory separators

#111
15416479
2017-10-17

Autonomous filtration switch