ClassID:

30063

B01D2201/087 - CPC Classification

Classification description:

Details relating to filtering apparatus; Regeneration of the filter using gas bubbles, e.g. air

Recent Application in this class:
#1
20250186908
2025-06-12

MEDIA RETENTION PLATE FOR A BLOCK UNDERDRAIN SYSTEM

#2
20240359120
2024-10-31

Apparatus and Method for Cleaning Metal Filter

#3
20240335770
2024-10-10

Media retention plate for a block underdrain system

#4
20240246011
2024-07-25

LAYERED MEDIA BACKWASH WITH INTERNAL DRAFT TUBE

#5
20240238703
2024-07-18

A PUMP-EQUIPPED SEPARATOR

#6
20240216839
2024-07-04

A PUMP-EQUIPPED SEPARATOR

#7
20220355225
2022-11-10

Externally Fed Screen for Filtration

#8
20220143534
2022-05-12

Liquid filtration system

#9
20220007881
2022-01-13

WASHING DEVICE AND EXTRACTION SYSTEM

#10
20210387124
2021-12-16

Apparatus and method for cleaning metal filter

#11
20210260607
2021-08-26

Pulse nozzle for filter cleaning systems

#12
20200179838
2020-06-11

Multistage fiber filtering apparatus capable of selectively filtering

#13
20200122060
2020-04-23

Fiber filtering apparatus

#14
20190151779
2019-05-23

Modular backwash assembly and method for using the same

#15
20190001243
2019-01-03

Filter cleaning system and method

#16
20180339246
2018-11-29

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

#17
20180229156
2018-08-16

Energy reduction and monitoring control system for backwashing media systems

#18
20180085686
2018-03-29

Method for maximizing uniform effluent flow through a waste water treatment system

#19
20180028945
2018-02-01

Fiber filtering apparatus

#20
20170368482
2017-12-28

Multistage fiber filtering apparatus capable of selectively filtering

#21
20170312660
2017-11-02

Filtration system and method

#22
20170080360
2017-03-23

ENERGY REDUCTION AND MONITORING CONTROL SYSTEM FOR BACKWASHING MEDIA SYSTEMS

#23
20170065912
2017-03-09

Filter cleaning system and method

#24
20160243471
2016-08-25

Screen decanter for removing solids from wastewater

#25
20160107899
2016-04-21

Method for maximizing uniform effluent flow through a waste water treatment system

#26
20160107104
2016-04-21

Screen decanter for screening solids from waste water

#27
20150008195
2015-01-08

Method for washing a filter having at least two layers of filtering media, in particular for filtering seawater, and equipment for implementing said method

#28
20140263106
2014-09-18

Filtration system and method

#29
20130206677
2013-08-15

Self-Cleaning Fluid-Filtering Apparatus

#30
20130200006
2013-08-08

Filter cleaning system and method

#31
20130146548
2013-06-13

IMMERSED SCREEN AND METHOD OF OPERATION

#32
20120279917
2012-11-08

SYSTEMS AND METHODS FOR FILTRATION

#33
20120267295
2012-10-25

HORIZONTAL ROD-SUPPORTED, PORE-CONTROLLABLE FIBER MEDIA FILTER, AND HORIZONTAL ROD-SUPPORTED FIBER FILTER SYSTEM

#34
20120234747
2012-09-20

FILTER DEVICE

#35
20120111784
2012-05-10

FILTRATION PURPOSE FLAT-MEMBRANE ELEMENT, FLAT-MEMBRANE-TYPE SEPARATION MEMBRANE MODULE, AND FILTRATION APPARATUS

#36
20120048814
2012-03-01

Method for cleaning filter structures in filtration installations for filtering liquid products, and a filtration installation

#37
20110073550
2011-03-31

METHOD FOR OPERATING A FILTER APPARATUS AND FILTER APPARATUS

#38
20100320159
2010-12-23

Method and device for cleaning non-fixed media filters

#39
20090255872
2009-10-15

AERATING DEVICE FOR A WATER FILTERING SYSTEM WITH IMMERSED MEMBRANES, INCLUDING A FLOOR PROVIDED WITH MEANS FOR INJECTING A GAS AND AT LEAST ONE PRESSURE BALANCING SYSTEM

#40
20090166283
2009-07-02

Filter Device and Method for Purifying Polluted Liquids

#41
20090071901
2009-03-19

SYSTEM AND METHOD FOR FILTERING LIQUIDS

#42
20080128369
2008-06-05

Methods and systems for filtration

#43
20080035563
2008-02-14

Immersed-Membrane Water Treating Filtering Device Comprising Means Preventing Filterable Medium Backflowing to Filter Cleaning Gas Injecting Means

#44
20080035536
2008-02-14

Gravity type fiber filter

#45
20070187318
2007-08-16

Filter cartridges for fluid intake systems

#46
20070081922
2007-04-12

Reactor for solid phase synthesis

#47
20060060521
2006-03-23

Filter device

#48
20050139538
2005-06-30

Aeration method