ClassID:

86280

C02F1/5263 - CPC Classification

Classification description:

Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds

Recent Application in this class:
#1
20260138899
2026-05-21

COAL-DUST WATER FLOCCULANT USING CHITOSAN

#2
20260001783
2026-01-01

ENHANCED FOAM REMOVAL OF TOTAL SUSPENDED SOLIDS AND MULTIPLY CHARGED CATIONS FROM AQUEOUS OR AQUEOUS/OIL MIXED PHASE VIA INCREASED VISCOELASTICITY

#3
20250382207
2025-12-18

FLOCCULANT FOR REMOVING HEAVY METALS AND METHOD FOR REMOVAL OF HEAVY METALS USING THE SAME

#4
20250276922
2025-09-04

CATIONIC COAGULANT AND FLOCCULANT COMPOSITIONS AND METHODS OF USE TO REMOVE ORGANICS/INORGANICS FROM PRODUCED WATER AT HIGH TEMPERATURE OPERATIONS

#5
20250154034
2025-05-15

Materials and Methods for Recovering Minerals from Industrial Wastewater

#6
20250136483
2025-05-01

WATER TREATMENT COMPOSITIONS AND METHODS OF USE

#7
20240417290
2024-12-19

Compositions and Methods for Flocculation

#8
20240286929
2024-08-29

ENHANCED FOAM REMOVAL OF TOTAL SUSPENDED SOLIDS AND MULTIPLY CHARGED CATIONS FROM AQUEOUS OR AQUEOUS/OIL MIXED PHASE VIA INCREASED VISCOELASTICITY

#9
20240254018
2024-08-01

MOBILE SYSTEM AND METHOD FOR SEPARATING WATER AND PAINT

#10
20240217848
2024-07-04

A method for producing cationic saccharides

#11
20230416126
2023-12-28

SYSTEM AND METHOD FOR REMOVING MICROPARTICLES AND NANOPARTICLES FROM WATER USING GELATINOUS ZOOPLANKTON MUCUS

#12
20230416123
2023-12-28

COAGULATING AGENT OF PLANT ORIGIN FOR WATER TREATMENT

#13
20230348300
2023-11-02

WATER TREATMENT AGENT

#14
20230286842
2023-09-14

COMPOSITIONS AND METHODS FOR TREATING AQUARIUM WATER

#15
20230265037
2023-08-24

METHOD FOR MANUFACTURING MONO CALCIUM CITRATE BY USING SHELL AND APPLICATION THEREOF

#16
20230242423
2023-08-03

Extract of plant powder, and water purifier

#17
20230183116
2023-06-15

Biopolymeric water treatment

#18
20230070956
2023-03-09

FLOCULANT FORMULATION BASED ON CHITOSAN COMPATIBLE WITH DISINFECTION PRODUCTS AND METHOD OF PREPARATION

#19
20230014479
2023-01-19

COMPOSITIONS FOR THE REMEDIATION OF PER- AND POLY-FLUOROALKYL SUBSTANCES IN WASTEWATER

#20
20220411304
2022-12-29

Remediation of per- and poly-fluoroalkyl substances in wastewater

#21
20220380237
2022-12-01

COMPOSITIONS AND METHODS FOR TREATING CONTAMINATED WATER

#22
20220363575
2022-11-17

Enhanced coagulation method for removing microplastics in water

#23
20220242759
2022-08-04

Method for producing microbial cellular biomass having flocculant properties

#24
20220153642
2022-05-19

WASTEWATER TREATMENT SYSTEM AND METHOD FOR PRODUCING SLUDGE FOR CEMENT MANUFACTURING

#25
20220106209
2022-04-07

Solid precipitation apparatus and solid precipitation process

#26
20220002173
2022-01-06

Composition and method for purifying, disinfecting and clarifying water

#27
20210380444
2021-12-09

Extract of plant powder, and water purifier

#28
20210379605
2021-12-09

METHOD AND ARRANGEMENT FOR PROCESS WATER TREATMENT

#29
20210340037
2021-11-04

Anionic flocculant, anionic flocculant production method, and treatment method

#30
20210238658
2021-08-05

Point-of-care electroflotation of dispersed, low tolerance pathogens

#31
20210114901
2021-04-22

METHOD FOR TREATING WASTEWATER VIA A FLOCCULATING MINERAL COMPOSITION

#32
20210047208
2021-02-18

WATER TREATMENT PROCESS

#33
20210017046
2021-01-21

Enhanced foam removal of total suspended solids and multiply charged cations from aqueous or aqueous/oil mixed phase via increased viscoelasticity

#34
20200369539
2020-11-26

Water-purifying agent and water purification method

#35
20200361792
2020-11-19

Apparatus to remove harmful chemical species from industrial wastewater using iron-based products

#36
20200325043
2020-10-15

Aquifer storage and recovery system using natural coagulant

#37
20200255307
2020-08-13

METHOD OF PROCESSING THIN STILLAGE

#38
20200231483
2020-07-23

Biopolymeric water treatment

#39
20200223719
2020-07-16

Method and system for optimization of coagulation and/or flocculation in a water treatment process

#40
20200180983
2020-06-11

Composition and method for removing impurities from a fluid

#41
20200131061
2020-04-30

Modular system and method for mercury speciation in a fluid sample

#42
20200071204
2020-03-05

Method for treating seawater by bioflocculation and flotation and corresponding installation

#43
20200071194
2020-03-05

System and method for treating contaminated water

#44
20200039851
2020-02-06

Compositions and method for removing impurities from a fluid stream

#45
20190256387
2019-08-22

EXTRACT OF PLANT POWDER, AND WATER PURIFIER

#46
20190152813
2019-05-23

Method for production of potable water

#47
20190119131
2019-04-25

WATER TREATMENT USING CRYPTOCRYSTALLINE MAGNESITE

#48
20190031533
2019-01-31

Water treatment

#49
20180362375
2018-12-20

Implementation method for eliminating harmful algal blooms through optimized utilization of modified clays

#50
20180354824
2018-12-13

Phosphorus precipitation and membrane flux in membrane bioreactors

#51
20180346354
2018-12-06

Method and Composition for Moving Phosphates from Water

#52
20180244549
2018-08-30

Method for removing humic substances from an aqueous alkaline solution

#53
20180230029
2018-08-16

Polysaccharide agents and methods of their use for removing solids from water

#54
20180141827
2018-05-24

System and method for treating contaminated water

#55
20180118583
2018-05-03

Electroplating wastewater treatment process using red mud, straw and seawater

#56
20180111857
2018-04-26

Water cleaning agent and water cleaning method

#57
20180111110
2018-04-26

Filtration aid and filtration treatment method

#58
20180093899
2018-04-05

Surface-coated calcium carbonate-containing material and process for the purification of water

#59
20180079665
2018-03-22

Water-Purifying Agent and Water Purification Method

#60
20170341959
2017-11-30

WATER TREATMENT USING A CRYPTOCRYSTALLINE MAGNESITE - BENTONITE CLAY COMPOSITE

#61
20170313605
2017-11-02

MODIFIED PROTEIN MATERIALS, METHODS AND USES THEREOF

#62
20170203982
2017-07-20

Systems and methods for removing finely dispersed particulate matter from a fluid stream

#63
20170166462
2017-06-15

Compositions and Methods for the Removal of Sulfates and Metals From Waste Water

#64
20170121187
2017-05-04

Water-purifying agent and water purification method

#65
20170001888
2017-01-05

Wet paint booth circulating water treatment agent

#66
20160362316
2016-12-15

ADAPTIVE IN-LINE MIXING FOR FLUID FINE TAILINGS FLOCCULATION

#67
20160221847
2016-08-04

Water treatment compositions and methods of use

#68
20160200600
2016-07-14

Enhancement of dewatering using soy flour or soy protein

#69
20160145133
2016-05-26

Method for treatment of a wastewater stream containing dissolved compounds or ions

#70
20160060143
2016-03-03

Surface-treated calcium carbonate and phyllosilicate and its use in water purification

#71
20160023933
2016-01-28

BioFerric-flocculant enhanced primary treatment process (BEPT) for sewage treatment

#72
20150376038
2015-12-31

CLARIFICATION OF HYDROCARBONS AND SUSPENDED MATTER FROM AN AQUEOUS MEDIUM

#73
20150368138
2015-12-24

Method and system for the integral treatment of wastewater from the maize industry

#74
20150353664
2015-12-10

Multivalent polymers for clay aggregation

#75
20150345164
2015-12-03

System and method for maintaining water quality in large water bodies

#76
20150336883
2015-11-26

Heavy metal remediation via sulfur-modified bio-oils

#77
20150315056
2015-11-05

Method for thickening or dehydrating sludge

#78
20150274565
2015-10-01

Method And Composition For Water Purification And Sludge Dewatering

#79
20150258589
2015-09-17

TREATMENT OF CONTAMINATED SOIL AND WATER

#80
20150218021
2015-08-06

Methods and compositions for removing phosphates from water

#81
20150203386
2015-07-23

Process and apparatus for slaking lime and dissolving scale

#82
20150197434
2015-07-16

Use Of Celluloses In Water Treatment

#83
20150166376
2015-06-18

Method for flocculating algae using polymers including tannin

#84
20150166361
2015-06-18

System and method for maintaining water quality in large water bodies

#85
20150151990
2015-06-04

TRANSPORTATION OF FLOCCULATED TAILINGS IN A PIPELINE

#86
20150144574
2015-05-28

POLYSACCHARIDE AGENTS AND METHODS OF THEIR USE FOR REMOVING SOLIDS FROM WATER

#87
20150144573
2015-05-28

Consolidation and dewatering of particulate matter with protein

#88
20150090667
2015-04-02

Water treatment compositions and methods of use

#89
20150083652
2015-03-26

SYSTEM AND METHOD FOR TREATING CONTAMINATED WATER

#90
20150057153
2015-02-26

Methods and compositions for treating pollution

#91
20150034563
2015-02-05

ENHANCEMENT OF WASTEWATER SLUDGE DEWATERING USING SOY FLOUR OR SOY PROTEIN

#92
20140378676
2014-12-25

Nanofibrillar cellulose as a phase separation agent

#93
20140353257
2014-12-04

Compositions for water treatment and methods of using thereof

#94
20140339158
2014-11-20

System and process for removing ammonium, soluble BOD and suspended solids from a wastewater stream

#95
20140335602
2014-11-13

Chemical oxidation and biological attenuation process for the treatment of contaminated media

#96
20140319069
2014-10-30

METHOD FOR THE REMOVAL OF SUBMICRON PARTICULATES FROM CHLORINATED WATER BY SEQUENTIALLY ADDING A CATIONIC POLYMER FOLLOWED BY ADDING AN ANIONIC POLYMER

#97
20140251921
2014-09-11

Composition and processfor removing impurities from a circulating water system

#98
20140251920
2014-09-11

Enhanced foam removal of total suspended solids and multiply charged cations from aqueous or aqueous/oil mixed phase via increased viscoelasticity

#99
20140190898
2014-07-10

Cactus mucilage and ferric ions for the removal of arsenate (As(V)) from water

#100
20140144815
2014-05-29

Composition and method for improvement in froth flotation

#101
20140116939
2014-05-01

Method for wastewater treatment by urine separation, seawater addition, and nitrification and in-sewer denitrification

#102
20140080945
2014-03-20

Process for improving the rheological properties of an aqueous dispersion

#103
20140042061
2014-02-13

Heating system for desalination

#104
20130299433
2013-11-14

Plant-derived flocculant, flocculant mixture, method of flocculation, and method for preparing plant-derived flocculant

#105
20130256235
2013-10-03

WATER TREATMENT COMPOSITIONS AND METHODS OF USE

#106
20130174734
2013-07-11

METHOD TO DECREASE THE AMOUNT OF PARTICULATE MATERIAL SUSPENDED IN AIR OR WATER, COMPRISING THE AGGLOMERATION OF THE SUSPENDED PARTICULATE MATERIAL WITH NEGATIVELY CHARGED EXOPOLYSACCHARIDES

#107
20130168318
2013-07-04

Method for Treating Water by Ballasted Flocculation Implementing a Natural Flocculent

#108
20130153512
2013-06-20

Treatment of surfactant laden wastewater

#109
20130098817
2013-04-25

Sediment retention bag

#110
20130048572
2013-02-28

Self-contained irrigation polishing system

#111
20130037483
2013-02-14

Methods of conditioning mixed liquor using water soluble quaternary ammonium starches

#112
20130008079
2013-01-10

Coagulation of oil in water and the resulting floating semisolid complex

#113
20120298595
2012-11-29

CHITOSAN-COATED FIBERS TO SATISFY NSF50 TEST STANDARD FOR SPAS AND POOLS

#114
20120217201
2012-08-30

METHOD FOR ENHANCING BIOLOGICAL WATER TREATMENT

#115
20120152176
2012-06-21

Microbial mediated chemical sequestering of phosphate in a closed-loop recirculating aquaculture system

#116
20120145645
2012-06-14

CLARIFICATION OF HYDROCARBONS AND SUSPENDED MATTER FROM AN AQUEOUS MEDIUM

#117
20120031850
2012-02-09

Extraction of Sulfate from Water

#118
20110147316
2011-06-23

Deoiling of SAGD produce water

#119
20110147291
2011-06-23

Wastewater treatment apparatus

#120
20110139721
2011-06-16

Magnetic separation apparatus and magnetic separation method, and wastewater treatment apparatus and wastewater treatment method

#121
20110042321
2011-02-24

Methods for flocculating suspensions using biobased renewable flocculants

#122
20110006013
2011-01-13

METHOD FOR THE REMOVAL OF SUBMICRON PARTICULATES FROM CHLORINATED WATER BY SEQUENTIALLY ADDING A CATIONIC POLYMER FOLLOWED BY ADDING AN ANIONIC POLYMER

#123
20100264098
2010-10-21

CHITOSAN-COATED FIBERS TO SATISFY NSF50 TEST STANDARD FOR SPAS AND POOLS

#124
20090294370
2009-12-03

System for filtering water or wastewater

#125
20090272693
2009-11-05

Utilization of polysaccharides to eliminate anions of heavy metals from water

#126
20090206040
2009-08-20

Systems and methods for removing finely dispersed particulate matter from a fluid stream

#127
20090111694
2009-04-30

Methods and compositions for treating pollution

#128
20090107912
2009-04-30

Composite material and method for removing harmful algal blooms and turning them into submerged macrophytes

#129
20080190861
2008-08-14

COMPOSITION AND METHOD FOR AGGLOMERATING SOLIDS IN SOLID-LIQUID SEPARATION PROCESSES

#130
20080142447
2008-06-19

METHOD OF TREATING WASTEWATER

#131
20080121588
2008-05-29

Coagulant-enhanced pre-filtration system

#132
20070203388
2007-08-30

In situ immobilization of metals in contaminated sites using stabilized iron phosphate nanoparticles

#133
20060231499
2006-10-19

Compositions for wastewater treatment

#134
20060231498
2006-10-19

Reactive filtration

#135
20060196834
2006-09-07

Method for the removal of submicron particulates from chlorinated water by sequentially adding a cationic polymer followed by adding an anionic polymer

#136
20060180289
2006-08-17

Cationic liquid starchy composition and uses thereof

#137
20060163163
2006-07-27

Process and compositions for the purification of water

#138
20060124553
2006-06-15

Method of preventing or reducing aluminosilicate scale in high level nuclear wastes

#139
20060120805
2006-06-08

Method for treating metal-contaminated water and soil

#140
20060000783
2006-01-05

Use of chitosan as a clarification aid for mining ponds

#141
20050258095
2005-11-24

Enzyme-assisted clarification and dewatering of wastewater

#142
20050242043
2005-11-03

Method for removing oocysts from water

#143
20050023214
2005-02-03

Seaweed-based product for treating liquid waste, together with method for making and using the seaweed-based product

#144
19352687
2026-05-19

Somatic embryonic cell suspension for wastewater treatment

#145
16850761
2022-03-29

Method for treatment of a wastewater stream containing dissolved compounds or ions

#146
14947557
2018-11-13

Composition and method to reduce sediment and bacterial contamination from water

#147
14035942
2018-04-24

Methods for treating liquid streams containing quaternary ammonium compounds