ClassID:

29348

B01D36/005 - CPC Classification

Classification description:

Filter circuits or combinations of filters with other separating devices; Filters in combination with devices for the removal of liquids Liquid level sensing means, e.g. for water in gasoil-filters

Recent Application in this class:
#1
20250345731
2025-11-13

DIESEL FUEL FILTER

#2
20250271290
2025-08-28

LOW LEVEL WATER SENSOR AND METHOD OF USE

#3
20240307800
2024-09-19

FILTER CARTRIDGE FOR INSERTION IN A FILTER HOUSING OF A FLUID FILTER

#4
20240123377
2024-04-18

FILTER INSERT FOR INSERTION INTO A FILTER HOUSING

#5
20240042354
2024-02-08

Fuel pre-filter module, filter element and filter head with a priming pump

#6
20230219023
2023-07-13

Fuel-water separator systems and methods

#7
20230211265
2023-07-06

BULK FILL SYSTEM WITH SERIAL FLUID FILTRATION ASSEMBLY AND METHOD OF USING SAME FOR AUTOMATED AIR TRANSFER

#8
20230079260
2023-03-16

Non-vented, semi-automated water drain valve system

#9
20220298002
2022-09-22

Method and apparatus for limiting acidic corrosion and contamination in fuel delivery systems

#10
20220136885
2022-05-05

Low level water sensor and method of use

#11
20220054959
2022-02-24

METHOD AND DEVICE FOR DETERMINING AT LEAST ONE OPERATING PARAMETER OF A FILTER OR A FILTER CARTRIDGE ARRANGED IN THE FILTER, AND FILTER CARTRIDGE

#12
20220040611
2022-02-10

Self sufficient suction side automatic drain valve

#13
20220001313
2022-01-06

Fuel filter device

#14
20210379516
2021-12-09

Filter device and method of manufacturing the filter device

#15
20210340942
2021-11-04

Fuel filter

#16
20210283539
2021-09-16

Fuel-water separator systems and methods

#17
20210252437
2021-08-19

Fuel pre-filter module, filter element and filter head with a priming pump

#18
20210113942
2021-04-22

Systems and methods for securing a sealing member on a filter assembly

#19
20210053000
2021-02-25

FILTER LEAK PATH PREVENTION VIA INTERFERENCE PIN

#20
20200370521
2020-11-26

Retrofitting an operating vehicle fuel delivery system with a fuel-air separator

#21
20200368653
2020-11-26

Adapter For A Filter Assembly

#22
20200368652
2020-11-26

NO FILTER NO RUN FLUID FILTRATION SYSTEM

#23
20200306667
2020-10-01

Coalescing filter element

#24
20200289966
2020-09-17

Filter leak path prevention via interference pin

#25
20200277920
2020-09-03

Water separation group

#26
20200271607
2020-08-27

Water sensor for detecting water in gas oil filters

#27
20200248662
2020-08-06

Discharge control device for a filter system, and filter system having a discharge control device

#28
20200222836
2020-07-16

Fuel-water separator systems and methods

#29
20200129891
2020-04-30

Filter element for liquid filtration

#30
20190388814
2019-12-26

Valve-sensor assembly

#31
20190383252
2019-12-19

Water-in-fuel sensor with cavity for detection at grade

#32
20190344199
2019-11-14

Diesel dehydrator

#33
20190240602
2019-08-08

Facial sealing system for a filter

#34
20190176065
2019-06-13

Electronic filter detection feature for liquid filtration systems

#35
20190168140
2019-06-06

APPLICATION BASED WATER DRAIN FEATURE FOR FUEL WATER SEPARATORS AND/OR NATURAL GAS FILTERS

#36
20190046905
2019-02-14

Torsional no filter no run system and method

#37
20190009196
2019-01-10

Low Profile Radial Indexing Water Bowl with Integrated WIF/Connector

#38
20180348191
2018-12-06

SYSTEM AND METHOD FOR IMPROVING FUEL QUALITY

#39
20180333662
2018-11-22

Filter system with central element and strainer filter

#40
20180290084
2018-10-11

Installation of correct filter cartridge in fluid filter assembly before allowing assembly to be completed

#41
20180257925
2018-09-13

Method and apparatus for limiting acidic corrosion and contamination in fuel delivery systems

#42
20180243671
2018-08-30

Water level sensor device for a fuel filter

#43
20180221797
2018-08-09

No filter no run fluid filtration system

#44
20180216588
2018-08-02

Auto drain system for vacuum and pressure side fuel water separator

#45
20180209387
2018-07-26

Fuel filter

#46
20180195890
2018-07-12

Water level detector for fuel filters

#47
20180080916
2018-03-22

Water in fuel (WIF) sensor having electrostatic discharge capability

#48
20180050292
2018-02-22

Fuel filter

#49
20180001238
2018-01-04

Filter leak path prevention via interference pin

#50
20170335812
2017-11-23

AUTO DRAIN SYSTEM FOR VACUUM SIDE FUEL WATER SEPARATORS

#51
20170312669
2017-11-02

Drain control device for a filter system as well as filter system with a drain control device

#52
20170312668
2017-11-02

Drain control device for a filter system as well as filter system with a drain control device

#53
20170304749
2017-10-26

Fuel filter device

#54
20170298881
2017-10-19

INTEGRATED SMART FUEL FILTRATION SYSTEM

#55
20170276106
2017-09-28

Fuel filter

#56
20170252684
2017-09-07

Filter element having projecting bayonet-type protrusion

#57
20170252683
2017-09-07

Clean-side water-separating filter element having bayonet connection, and fuel filter having a filter element of this type

#58
20170218896
2017-08-03

Water separator with a water overflow secured by means of a float valve

#59
20170167455
2017-06-15

NEXT-GENERATION DIESEL FUEL FILTER INTEGRATED WITH FUEL PUMP

#60
20170157542
2017-06-08

Water separator element comprising water detection electrodes

#61
20170120168
2017-05-04

Coalescing filter element

#62
20170095758
2017-04-06

Fuel filter device

#63
20170087486
2017-03-30

Filter element with central element for a filter system

#64
20170065916
2017-03-09

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

#65
20170043283
2017-02-16

Filter module with window type clear bowl

#66
20170021295
2017-01-26

Fuel filter assembly, filter element and method for draining water from a fuel filter assembly

#67
20160369797
2016-12-22

Fuel filter assembly with brushless DC pump

#68
20160369794
2016-12-22

Brushless DC motor control and methods of operating a fuel pump

#69
20160367921
2016-12-22

Brushless DC Motor Control With Integrated Water in Filter Circuitry

#70
20160349200
2016-12-01

Multi-conductor water in fuel sensor for fill rate detection

#71
20160310880
2016-10-27

Filters, filter assemblies, filter systems and methods for identifying installation of qualified filter elements

#72
20160296864
2016-10-13

Electronic filter detection feature for liquid filtration systems

#73
20160281662
2016-09-29

Fuel-air separator and improved air bleed system

#74
20160236123
2016-08-18

Filter group with presence sensor of water in diesel fuel

#75
20160214040
2016-07-28

Flow cap and filter assembly including flow cap

#76
20160214038
2016-07-28

Filter assembly including flow cap

#77
20160138538
2016-05-19

Fuel filter for diesel engine

#78
20160074786
2016-03-17

Filters, filter assemblies, filter systems and methods for identifying installation of qualified filter elements

#79
20160055738
2016-02-25

Remote water in fuel indicator unit

#80
20160051916
2016-02-25

PROCESS AND APPARATUS FOR SEPARATING OUT AND REMOVING WATER PRESENT IN LIQUID FUELS, ESPECIALLY WATER FROM DIESEL OIL

#81
20160008749
2016-01-14

Fuel water separator having filter and sensor

#82
20160001205
2016-01-07

Fuel filter

#83
20150204055
2015-07-23

System for recycling grey water

#84
20150047421
2015-02-19

Fuel filter device

#85
20150021246
2015-01-22

Fuel filter of an internal combustion engine and heating sensor module of a fuel filter

#86
20140366961
2014-12-18

Emptying device

#87
20140353236
2014-12-04

Filter for fluid, filter element of a filter, and filter housing of a filter

#88
20140353233
2014-12-04

Installation of correct filter cartridge in fluid filter assembly before allowing assembly to be completed

#89
20140061110
2014-03-06

FILTER HOUSING WITH INTEGRALLY THREADED PORT

#90
20130285678
2013-10-31

Filters, filter assemblies, filter systems and methods for identifying installation of qualified filter elements

#91
20130180899
2013-07-18

Filtering element

#92
20130153487
2013-06-20

Fuel water separator filter with water drain

#93
20130087497
2013-04-11

Filter cartridge having a filter within a filter, and an endplate sealing structure on an outer filter element

#94
20120303204
2012-11-29

Fuel filter diagnostic system and filter cartridge

#95
20120037557
2012-02-16

Filter

#96
20120037548
2012-02-16

Filtering device for fluids, in particular for fuel

#97
20120031824
2012-02-09

MODULE INSERT FOR INSTALLATION IN A LIQUID FILTER

#98
20110284435
2011-11-24

FLUID FILTER

#99
20110266205
2011-11-03

Fuel filter having water discharge pipe

#100
20110259802
2011-10-27

Multi-conductor water in fuel sensor for fill rate detection

#101
20110186501
2011-08-04

Module insert for installation in a liquid filter

#102
20110147290
2011-06-23

Fuel filter

#103
20110088800
2011-04-21

Liquid drain system

#104
20110011807
2011-01-20

Device and method for operating a fuel filter

#105
20100294707
2010-11-25

MULTI-STAGE FILTER CARTRIDGE WITH SNAP FIT FILTERS

#106
20100276352
2010-11-04

Fuel filter with filter recognition

#107
20100258491
2010-10-14

Filtering device for fluids, in particular for fuel

#108
20100258489
2010-10-14

Purging assembly for a filter housing

#109
20100219117
2010-09-02

Coalescing element

#110
20100117842
2010-05-13

Contaminant Detection Unit

#111
20100101993
2010-04-29

Filter cartridge having a filter within a filter, and an endplate sealing structure on an outer filter element

#112
20100089805
2010-04-15

Snap-in water sensor

#113
20090184041
2009-07-23

Fluid filter with clear shell portion

#114
20090173639
2009-07-09

WATER DRAINING SYSTEM FOR A FUEL FILTER

#115
20090145823
2009-06-11

Process and apparatus for separating out and removing water present in liquid fuels, especially water from diesel oil

#116
20090090678
2009-04-09

Fuel filter device

#117
20090078631
2009-03-26

Modular fuel filter assembly

#118
20080272046
2008-11-06

Fuel filter

#119
20080217231
2008-09-11

Component for a fluid filter, and fluid filter

#120
20070221560
2007-09-27

Fuel filter for diesel internal combustion engines

#121
20060157421
2006-07-20

Apparatuses and methods for detecting contaminant in a fuel system

#122
20060144767
2006-07-06

Fuel filter

#123
20060070956
2006-04-06

Liquid filter

#124
20050103728
2005-05-19

Diesel fuel purifier

#125
15975149
2020-06-30

Marine propulsion systems and fuel filters for marine propulsion systems