ClassID:

29356

B01D37/025 - CPC Classification

Classification description:

Processes of filtration; Precoating the filter medium; Addition of filter aids to the liquid being filtered additives incorporated in the filter

Recent Application in this class:
#1
20260061351
2026-03-05

FILTRATION SYSTEM WITH ADDITIVE

#2
20250198075
2025-06-19

PRESSURE SENSITIVE PASSIVE LAUNDRY MICROPLASTIC FILTRATION

#3
20250116248
2025-04-10

ELECTRONIC FILTER DETECTION FEATURE FOR LIQUID FILTRATION SYSTEMS

#4
20240375031
2024-11-14

Zeolite and interferon coated disposable particulate respirator and air filtration media

#5
20240292842
2024-09-05

Compositions Containing Rare Earth Oxides and Precious Metals for Biological Contaminant Removal

#6
20240286067
2024-08-29

PURIFICATION OF OIL

#7
20240109010
2024-04-04

PRE-LOADING OF FILTER MEDIA WITH CONTAMINANTS FOR IMPROVED CAPTURE IN PROCESS VESSELS

#8
20230391823
2023-12-07

REGENERATION AND MULTIPLE USE OF DEPTH FILTERS

#9
20230381705
2023-11-30

Filter device having multiple changeable filter surfaces

#10
20230358193
2023-11-09

Electronic filter detection feature for liquid filtration systems

#11
20230321574
2023-10-12

Reduction of leachable beta-glucan levels from cellulose-containing filter materials

#12
20220136471
2022-05-05

Electronic filter detection feature for liquid filtration systems

#13
20220081686
2022-03-17

FILTER ASSEMBLY, KIT AND METHODS

#14
20210236973
2021-08-05

Reduction of leachable beta-glucan levels from cellulose-containing filter materials

#15
20210199079
2021-07-01

Electronic filter detection feature for liquid filtration systems

#16
20210069610
2021-03-11

Carbon dioxide extraction processes, devices, methods, and systems

#17
20200086254
2020-03-19

Filter having tracer material

#18
20190224600
2019-07-25

Reduction of leachable beta-glucan levels from cellulose-containing filter materials

#19
20190217230
2019-07-18

Filter system

#20
20190184391
2019-06-20

FILTERING SYSTEMS UTILIZING NANO NEEDLES TO PIERCE CELL WALLS IN A FLUID FLOW THROUGH MICRO OR NANO STRUCTURES

#21
20190168145
2019-06-06

ANTIMICROBIAL COMPOSITIONS AND RELATED METHODS OF USE

#22
20190152464
2019-05-23

Thiol based resin system for removal of copper ions from hydraulic fluid

#23
20190150465
2019-05-23

Apparatus and method for separating whey proteins from whey using the same

#24
20190120157
2019-04-25

Electronic filter detection feature for liquid filtration systems

#25
20180326395
2018-11-15

Cationic composite silicate filter aids

#26
20180283333
2018-10-04

Catalytic decomposition of sterol glycosides in a diesel fuel filter

#27
20180280843
2018-10-04

ADDITIVE CARRIER FOR SPIN ON FILTERS

#28
20180280842
2018-10-04

ADDITIVE CARRIER FOR SPIN ON FILTERS

#29
20180147510
2018-05-31

Filter system

#30
20180134652
2018-05-17

METHOD FOR PURIFYING AN ESTER COMPOUND

#31
20180028952
2018-02-01

Ballast Water Treatment Systems

#32
20180008920
2018-01-11

Ballast Water Treatment Systems

#33
20170361306
2017-12-21

DIATOMACEOUS EARTH PRODUCTS, PROCESSES FOR PREPARING THEM, AND METHODS OF THEIR USE

#34
20170312663
2017-11-02

Bypass filter method and device

#35
20160369489
2016-12-22

Water straining and chemical additive device for marine vessels and recreational vehicles

#36
20160317959
2016-11-03

Fuel filter with additive release device

#37
20160317958
2016-11-03

Fuel filter and cartridge for such a filter with an onboard additive tank

#38
20160289618
2016-10-06

Composition for filtering and removing particles and/or constituents from a fluid

#39
20160273471
2016-09-22

Electronic filter detection feature for liquid filtration systems

#40
20150360155
2015-12-17

Ballast water treatment systems

#41
20150343340
2015-12-03

Filter device

#42
20150263367
2015-09-17

Filter apparatus

#43
20150165355
2015-06-18

Filter for fluids and an additive container for a filter

#44
20140346112
2014-11-27

DIATOMACEOUS EARTH PRODUCTS, PROCESSES FOR PREPARING THEM, AND METHODS OF THEIR USE

#45
20140263095
2014-09-18

CHEMICAL STRAINER

#46
20140263022
2014-09-18

Oil deterioration prevention device

#47
20140251883
2014-09-11

Oil deterioration prevention device

#48
20140246380
2014-09-04

Extended-life oil management system and method of using same

#49
20140150335
2014-06-05

Additive dispersing filter and method

#50
20130292318
2013-11-07

Oil deterioration suppressing apparatus

#51
20130193050
2013-08-01

Additive carrier for spin on filters

#52
20130152530
2013-06-20

Filtering device, in particular diesel particulate filter

#53
20130108957
2013-05-02

Production method of resist composition for lithography

#54
20130068694
2013-03-21

Oil filters containing strong base and methods of their use

#55
20120325752
2012-12-27

ADDITIVE DISPENSING FILTER AND METHOD

#56
20120315193
2012-12-13

Apparatus for generating hydrocarbon fuel

#57
20120301800
2012-11-29

Filter apparatus

#58
20120292236
2012-11-22

Adapting multipurpose liquid filter

#59
20120175309
2012-07-12

OIL FILTERS CONTAINING STRONG BASE AND METHODS OF THEIR USE

#60
20120172195
2012-07-05

COMPOSITION FOR FILTERING AND REMOVING PARTICLES AND/OR CONSTITUENTS FROM A FLUID

#61
20120145620
2012-06-14

Filter with Dissolvable Seal

#62
20120074052
2012-03-29

Chemical dispenser

#63
20120037556
2012-02-16

Filter element and filter assembly including locking mechanism

#64
20110297592
2011-12-08

Oil soluble additive injection apparatus

#65
20110278215
2011-11-17

Filtration device with releasable additive

#66
20110272338
2011-11-10

Additive dispersing filter and method

#67
20110163047
2011-07-07

Additive dispersing filter and method

#68
20110121036
2011-05-26

Apparatus for dispersing additive into a fluid stream

#69
20110094958
2011-04-28

Filter device for filtration of a fluid

#70
20110084032
2011-04-14

Additive dispersing filter and method of making

#71
20110041796
2011-02-24

Oil make-up and replenishment oil filter and method of use

#72
20110036784
2011-02-17

Filter cap additive delivery system

#73
20100219112
2010-09-02

Additive dispersing filter and method of making

#74
20100155324
2010-06-24

Filter apparatus

#75
20100108018
2010-05-06

Apparatus and method for adding one or more additives to an engine lubricant

#76
20090261041
2009-10-22

Composition for Filtering and Removing Particles and/or Constituents from a Fluid

#77
20090250388
2009-10-08

Filtration device with releasable additive

#78
20090206024
2009-08-20

Additive dispensing device and a thermally activated additive dispensing filter having the additive dispensing device

#79
20090194484
2009-08-06

Oil Filters Containing Strong Base and Methods of Their Use

#80
20090101561
2009-04-23

Filter Cap Additive Delivery System

#81
20090101272
2009-04-23

Additive dispersing filter and method of making

#82
20090077893
2009-03-26

Apparatus for generating hydrocarbon fuel

#83
20090057216
2009-03-05

Chemical Additive Carrier for Filter

#84
20090056542
2009-03-05

Fluid filter separator and method

#85
20090050547
2009-02-26

Additive Releasing Oil Filter

#86
20090001027
2009-01-01

Filter apparatus and method of removing organic waste

#87
20080290018
2008-11-27

Filter apparatus

#88
20080245719
2008-10-09

Filter element and filter assembly including locking mechanism

#89
20080223780
2008-09-18

Lubricating oil conditioning filter containing improved pelletized conditioner

#90
20080217236
2008-09-11

Cartridge type oil filter and engine cleaning device

#91
20080190504
2008-08-14

Additive dispersing filter and method of making

#92
20080149546
2008-06-26

Filter and system apparatus for removing sulfur-containing compounds from liquid fuels

#93
20080135467
2008-06-12

Filtration device with releasable additive

#94
20080116125
2008-05-22

FLUID FILTRATION APPARATUS AND METHOD OF USING THE SAME

#95
20080110819
2008-05-15

STAGED OIL FILTER INCORPORATING ADDITIVE-RELEASING PARTICLES

#96
20080099407
2008-05-01

Additive dispersing filter and method of making

#97
20080060985
2008-03-13

Wave coil filter assembly

#98
20080053919
2008-03-06

Filter assembly with a weak base slow release mechanism

#99
20080047887
2008-02-28

Additive dispersing filter and method of making

#100
20070235378
2007-10-11

Top Load Liquid Filter Assembly for Use with Treatment Agent; and, Methods

#101
20070193935
2007-08-23

SYSTEM AND METHOD FOR PROVIDING CONTINUOUS, IN-SITU, ANTIWEAR CHEMISTRY TO ENGINE OIL USING A FILTER SYSTEM

#102
20070170107
2007-07-26

Single body fuIl flow acid-neutralizing fluid filter

#103
20070169454
2007-07-26

Filtering member and method of manufacturing the same

#104
20070151911
2007-07-05

Environmentally friendly acid neutralizing cartridge

#105
20070108115
2007-05-17

Chemical additive carrier for filter

#106
20070084772
2007-04-19

CONTROLLED DOSING OF CHLORINE DIOXIDE OR OTHER SANITIZING AGENTS INTO PRESSURIZED WATER SYSTEMS

#107
20070034559
2007-02-15

Combination particulate and acid-neutralizing filter

#108
20070023339
2007-02-01

Filter Assembly And Filter Element

#109
20060254986
2006-11-16

Oil management system

#110
20060186031
2006-08-24

Filter apparatus

#111
20060180537
2006-08-17

Pressure gradient dosing system for fluid supply

#112
20060065584
2006-03-30

Liquid filter assembly for use with treatment agent and methods

#113
20060000760
2006-01-05

Combination particulate and acid-neutralizing filter

#114
20050247615
2005-11-10

Acid neutralizing filter canister

#115
20050194312
2005-09-08

Additive dispensing fluid filter

#116
20050194309
2005-09-08

Liquid filter, especially an oil filter for an internal combustion engine

#117
20050194301
2005-09-08

Liquid filter assembly for use with treatment agent; and, methods

#118
20050189285
2005-09-01

Filter aid used in alluviation

#119
20050173325
2005-08-11

Additive dispensing filter apparatus

#120
20050167351
2005-08-04

Liquid additive slow-release apparatus driven by a filter pressure gradient

#121
20050167350
2005-08-04

Liquid additive slow-release apparatus driven by a filter pressure gradient

#122
20050167349
2005-08-04

Controlled dosing of chlorine dioxide of other sanitizing agents into pressurized water systems

#123
20050150569
2005-07-14

Fluid additive delivery systems

#124
20050145277
2005-07-07

Chemical feeder

#125
20050081287
2005-04-21

Sloped drain down wall fitting for whirlpool bathtub

#126
20050077223
2005-04-14

Water treatment system

#127
20050061729
2005-03-24

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

#128
20050040092
2005-02-24

Additive dispersing filter and method of making

#129
20050023208
2005-02-03

Method of filtering a fluid with a filter assembly

#130
20050016927
2005-01-27

Filter apparatus for removing sulfur-containing compounds from liquid fuels, and methods of using same

#131
16877033
2023-10-24

Auxiliary filter for enhanced chemical protection

#132
15157376
2018-11-20

Oil soluble additive injection apparatus