Patents-Review.com
ClassID:

28867 ⎘

B01D24/22 - CPC Classification

Classification description:

Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being provided in an open container Downward filtration, the filter material being supported by pervious surfaces

Recent Application in this class:
#1
20250301974
2025-10-02

Water Holding System

 #2
20240252957
2024-08-01

SOLID-LIQUID FILTRATION ASSEMBLY AND METHOD OF USE

 #3
20220001306
2022-01-06

LIQUID FILTERATION SYSTEM

 #4
20210354057
2021-11-18

Enhanced shape support grid

 #5
20210340041
2021-11-04

STORMWATER FILTER UTILIZING A HYDROPONIC BED AS FILTERING COMPONENT

 #6
20210031125
2021-02-04

INTEGRATED UNIT FOR INTAKE AND PRETREATMENT WITH LOCAL BACKWASHING

 #7
20200276526
2020-09-03

Portable filtration apparatus, systems and methods

 #8
20200261875
2020-08-20

Filtering and distribution device for catalytic reactor

 #9
20200054970
2020-02-20

Integrated unit for intake and pretreatment with local backwashing

 #10
20190388806
2019-12-26

Method of forming a compost filter sock

 #11
20190263683
2019-08-29

GRAVITY FILTER

 #12
20190118119
2019-04-25

Integrated unit for intake and pretreatment with local backwashing

 #13
20190083907
2019-03-21

INTEGRATED UNIT FOR INTAKE AND PRETREATMENT WITH LOCAL BACKWASHING

 #14
20190047888
2019-02-14

TAIL WATER DECENTRALIZED TREATMENT AND DRAINAGE SYSTEM OF SEWAGE TREATMENT PLANT

 #15
20190039000
2019-02-07

Underdrain system using one-piece cell dividers

 #16
20180346351
2018-12-06

Gravity filter

 #17
20180333660
2018-11-22

Filter media retainer and underdrain system having a filter media retainer

 #18
20180282179
2018-10-04

Device for treating water for household use

 #19
20180021702
2018-01-25

Filter system with integral media retainer seal

 #20
20170319989
2017-11-09

Filter underdrain with internal air scour laterals

 #21
20170136392
2017-05-18

Modular stormwater filtration

 #22
20160243467
2016-08-25

Filter System with Integral Media Retainer Seal

 #23
20160114265
2016-04-28

Integrated unit for intake and pretreatment with local backwashing

 #24
20160067633
2016-03-10

Open filtration device for a water treatment station

 #25
20160031724
2016-02-04

Systems, devices, and methods of water filtration

 #26
20160023918
2016-01-28

Systems and methods of eliminating filter air locks

 #27
20150273364
2015-10-01

Underdrain for a filter system for filtering water or wastewater and a method of washing a filter system

 #28
20150041378
2015-02-12

Device for purifying a water sink

 #29
20140305856
2014-10-16

Quick-dry filter dewatering mobile process and apparatus

 #30
20140190908
2014-07-10

Continuous circulation sand filter and continuous circulation sand filtering method

 #31
20140166567
2014-06-19

Filter System with Integral Media Retainer Seal

 #32
20140027369
2014-01-30

Enhanced shape support grid

 #33
20140014566
2014-01-16

Gravity filter

 #34
20140014562
2014-01-16

Dissolved air flotation-type pretreatment apparatus

 #35
20130180906
2013-07-18

Filter media retainer assembly

 #36
20120312728
2012-12-13

Leveling hold-down mechanism for lateral screens

 #37
20120267311
2012-10-25

Filtering machine

 #38
20070039867
2007-02-22

Flume for a filter system including at least one filter having a filter bed that is periodically washed with liquid, gas or a combination thereof

 #39
20050211628
2005-09-29

Method and apparatus for enhancing filter bed performance

 #40
15710033
2019-10-22

Underdrain assembly for wastewater treatment

 #41
14669302
2016-06-07

Water filter