ClassID:

86419

C02F5/06 - CPC Classification

Classification description:

Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents; Softening water by precipitation of the hardness using calcium compounds

Recent Application in this class:
#1
20260138905
2026-05-21

Methods and Systems of Iodine Capture from Aqueous Solutions

#2
20260049011
2026-02-19

COMPOSITIONS AND METHODS FOR CONTROLLING SLUDGE BED PROPERTIES AND IMPROVING LIME SOFTENING PROCESS EFFICIENCY

#3
20260022045
2026-01-22

METHODS OF REDUCING CALCITE FORMATION AND SOLUBILIZED METALS FROM AQUEOUS EFFLUENT STREAMS

#4
20260002070
2026-01-01

SOFTENING OF PRODUCED OILFIELD BRINES

#5
20250313498
2025-10-09

SYSTEM AND METHOD FOR SOFTENING HIGH-SALINITY WATER VIA SELF-INDUCED CALCIUM BICARBONATE CRYSTALLIZATION IN FLUIDIZED BED

#6
20250296856
2025-09-25

SYSTEMS AND METHODS FOR DESALINATION OF LIQUIDS

#7
20250276922
2025-09-04

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

#8
20250263322
2025-08-21

Methods and Systems of PFAS Destruction using UV Irradiation at 222 Nanometers

#9
20250263321
2025-08-21

METHOD AND APPARATUS FOR TREATING NATURAL GAS AND OIL WELL WASTE WATERS FOR REMOVAL OF CONTAMINANTS AND DISSOLVED SOLIDS

#10
20250236541
2025-07-24

Methods and Systems of Iodine Capture from Aqueous Solutions

#11
20250223203
2025-07-10

INTELLIGENT DOSING CONTROL METHOD, DEVICE AND SYSTEM FOR SOFTENING AND REMOVING HARDNESS

#12
20250178940
2025-06-05

SYSTEM AND METHOD FOR REDUCING WASTEWATER HARDNESS AND CARBON CAPTURE UNDER HYPERGRAVITY

#13
20250019285
2025-01-16

Methods and systems of PFAS destruction using UV irradiation at 222 nanometers

#14
20250019266
2025-01-16

Methods and Systems for Recycling Materials During PFAS Destruction

#15
20240293793
2024-09-05

MATERIAL FOR NEUTRALISING AND/OR HARDENING LIQUIDS, A METHOD FOR PRODUCING SAME, AND USES

#16
20240208843
2024-06-27

SYSTEMS AND METHODS FOR DESALINATION OF LIQUIDS

#17
20240208842
2024-06-27

Systems and methods for desalination of liquids

#18
20240199454
2024-06-20

Process for Removing Hardness and Total Organic Carbon from Drinking Water

#19
20240092669
2024-03-21

Ozone treatment of mining effluents.

#20
20230391649
2023-12-07

Systems and methods for desalination of liquids

#21
20230348305
2023-11-02

SYSTEM AND METHOD FOR TREATMENT OF ANIMAL MANURE CONTAINING WASTEWATER

#22
20230234870
2023-07-27

System and method for treating reverse-osmosis concentrated water with high temporary hardness

#23
20230219057
2023-07-13

Methods of treating metal carbonate salts

#24
20220363576
2022-11-17

SILICA REDUCER COMPOSITIONS AND METHODS FOR TREATMENT OF PRODUCED WATER FROM THERMAL IN SITU BITUMEN OR HEAVY HYDROCARBON RECOVERY OPERATIONS

#25
20220288557
2022-09-15

Methods of treating metal carbonate salts

#26
20220288556
2022-09-15

Methods of treating metal carbonate salts

#27
20220055931
2022-02-24

METHODS OF REDUCING CALCITE FORMATION AND SOLUBILIZED METALS FROM AQUEOUS EFFLUENT STREAMS

#28
20210261447
2021-08-26

TREATMENT SYSTEM AND TREATMENT PROCESS FOR REMOVING HARDNESS, SILICON, AND TURBIDITY FROM WASTEWATER HAVING HIGH SALT CONCENTRATION

#29
20210163327
2021-06-03

Process for treating frac flowback and produced water including naturally occurring radioactive material

#30
20210024393
2021-01-28

ION REMOVAL SYSTEM

#31
20200290910
2020-09-17

Process for reduction of sulfide from water and wastewater

#32
20190351387
2019-11-21

MATERIAL FOR NEUTRALISING AND/OR HARDENING LIQUIDS, A METHOD FOR PRODUCING SAME, AND USES

#33
20190292083
2019-09-26

Apparatus for evaporative concentration of water to be treated, which uses hot lime softening, and method for evaporative concentration of water using the same

#34
20190256388
2019-08-22

Process for removing silica from produced water and other wastewater streams

#35
20190248689
2019-08-15

Method and apparatus for treating natural gas and oil well waste waters for removal of contaminants and dissolved solids

#36
20190169057
2019-06-06

METHODS FOR TREATING PRODUCED WATER TO REMOVE BORON AND AMMONIA

#37
20190106346
2019-04-11

SAGD saline water system optimization

#38
20190084848
2019-03-21

Coagulant blend in SAGD water treatment

#39
20190062189
2019-02-28

Concentrating aqueous solutions via hybridizing electrodialysis and other desalination techniques

#40
20190023595
2019-01-24

Method for treating an effluent supersaturated with calcium carbonate in the presence of phosphonate precipitation-inhibiting products

#41
20190016837
2019-01-17

Rheology-modifying agents for slurries

#42
20180363073
2018-12-20

PROCESS INCLUDING A CARBONATION STEP

#43
20180362377
2018-12-20

Hardness reduction filter

#44
20180354831
2018-12-13

Methods and systems for treating wastewater via forward osmosis

#45
20180345241
2018-12-06

Corrosion inhibition in hydrothermal processing

#46
20180319690
2018-11-08

Method of recovering oil or gas and treating the resulting produced water

#47
20180319687
2018-11-08

SCALE INHIBITION COMPOSITION

#48
20180230646
2018-08-16

METHOD FOR PRODUCING A FLOOR COVERING (INCLUDING CARPET AND CARPET TILE) WITH POSITIVE DEFINED RECYCLED CONTENT

#49
20180194656
2018-07-12

Water softening treatment using in-situ ballasted flocculation system

#50
20180105442
2018-04-19

Methods and compositions for clarifying produced waters for boiler feed waters

#51
20180065887
2018-03-08

High Quality Calcium Hydroxide Slurries

#52
20180028978
2018-02-01

Methods and systems for treating high temperature produced water

#53
20170260075
2017-09-14

PRE-TREATMENT OF SUPERSATURATED WARM WATER

#54
20170129819
2017-05-11

Recovery of phosphorous

#55
20170088452
2017-03-30

Apparatus for evaporative concentration of water to be treated, which uses hot lime softening, and method for evaporative concentration of water using the same

#56
20160362309
2016-12-15

SYSTEMS AND METHODS FOR GEOTHERMAL ENERGY HARNESSING FROM WELLS FOR WATER TREATMENT

#57
20160340215
2016-11-24

A method for treating sulphate-containing waters

#58
20160333429
2016-11-17

Purification processes

#59
20160244348
2016-08-25

A METHOD FOR TREATING ALKALINE BRINES

#60
20160208347
2016-07-21

Process including a carbonation step

#61
20160068413
2016-03-10

WATER TREATMENT SYSTEM

#62
20160009582
2016-01-14

Methods and systems for treating produced water

#63
20150360988
2015-12-17

METHOD FOR IMPROVING THE PERCENT RECOVERY AND WATER QUALITY IN HIGH TOTAL HARDNESS WATER

#64
20150329421
2015-11-19

Process for lime slurry production

#65
20150329398
2015-11-19

Method for treating organic laden produced water

#66
20150218020
2015-08-06

Method for treating fracture water for removal of contaminants at a wellhead

#67
20150122740
2015-05-07

Fluid treatment system

#68
20150048030
2015-02-19

Compact water treatment device

#69
20140262279
2014-09-18

Modular system for extracting hydrocarbons from subterranean volumes and associated methods

#70
20140262254
2014-09-18

Oil recovery process including treating permeate from a ceramic membrane to enhance oil recovery

#71
20140262253
2014-09-18

Process for recovering oil and treating resulting produced water with ceramic membranes

#72
20140202957
2014-07-24

METHOD FOR IMPROVING THE PERCENT RECOVERY AND WATER QUALITY IN HIGH TOTAL HARDNESS WATER

#73
20130187087
2013-07-25

PROCESS FOR LIME SLURRY PRODUCTION

#74
20130134098
2013-05-30

WATER TREATMENT PROCESSES FOR NORM REMOVAL

#75
20130126431
2013-05-23

Water conversion system

#76
20130098842
2013-04-25

METHOD FOR EVALUATING PERFORMANCE OF A LIME SOFTENING CLARIFIER

#77
20130020078
2013-01-24

Oil recovery process

#78
20120255904
2012-10-11

Method of recovering oil or gas and treating the resulting produced water

#79
20120160770
2012-06-28

Process for reducing the sulfate concentration in a wastewater stream

#80
20120125861
2012-05-24

METHOD AND SYSTEM FOR REDUCTION OF SCALING IN PURIFICATION OF AQUEOUS SOLUTIONS

#81
20110301072
2011-12-08

METHOD OF REDUCING CORROSION USING A WAREWASHING COMPOSITION

#82
20110160114
2011-06-30

CLEANING COMPOSITIONS CONTAINING WATER SOLUBLE MAGNESIUM COMPOUNDS AND METHODS OF USING THEM

#83
20110089013
2011-04-21

Apparatus of produced water treatment, system and method of using the apparatus, and method of water reuse by using the same

#84
20110023715
2011-02-03

Method for treating wastewater or produced water

#85
20100254873
2010-10-07

Methods of Use for Lime Residuals

#86
20100234262
2010-09-16

Cleaning compositions containing water soluble magnesium compounds and methods of using them

#87
20100173820
2010-07-08

Compositions including hardness ions and gluconate and methods employing them to reduce corrosion and etch

#88
20100089740
2010-04-15

METHOD AND SYSTEMS FOR PROCESSING WASTE WATER USING ZERO PROCESS WATER DISCHARGE

#89
20090236290
2009-09-24

Water treatment device comprising a reactor and means for injecting a reagent into the reactor mounted on mobile supporting means

#90
20090184061
2009-07-23

Reagent injector for equipping a water treatment reactor, comprising a nozzle associated with a dispersing member, and corresponding water treatment device

#91
20090149363
2009-06-11

Compositions including hardness ions and gluconate and methods employing them to reduce corrosion and etch

#92
20080300160
2008-12-04

Compositions including magnesium ion, calcium ion, and silicate and methods employing them to reduce corrosion and etch

#93
20080287335
2008-11-20

Compositions including hardness ion and threshold agent and methods employing them to reduce corrosion and etch

#94
20080287334
2008-11-20

Compositions including Ca and Mg ions and gluconate and methods employing them to reduce corrosion and etch

#95
20080280800
2008-11-13

Cleaning compositions with water insoluble conversion agents and methods of making and using them

#96
20080276967
2008-11-13

Cleaning compositions containing water soluble magnesium compounds and methods of using them

#97
20080274939
2008-11-06

WATER TREATMENT SYSTEM AND DOWNSTREAM CLEANING METHODS

#98
20080274933
2008-11-06

Mg++ chemistry and method for fouling inhibition in heat processing of liquid foods and industrial processes

#99
20080274932
2008-11-06

COMPOSITION FOR IN SITU MANUFACTURE OF INSOLUBLE HYDROXIDE WHEN CLEANING HARD SURFACES AND FOR USE IN AUTOMATIC WAREWASHING MACHINES AND METHODS FOR MANUFACTURING AND USING

#100
20080274930
2008-11-06

Method of reducing corrosion using a warewashing composition

#101
20080274928
2008-11-06

WATER SOLUBLE MAGNESIUM COMPOUNDS AS CLEANING AGENTS AND METHODS OF USING THEM

#102
20080135478
2008-06-12

Method for treating wastewater or produced water

#103
20080093304
2008-04-24

So-called water catalytic decarbonation appliances

#104
20070251884
2007-11-01

Method for removing at least one constituent from a solution

#105
20070021315
2007-01-25

Water precipitation softening system for detergents, bleaching agents and machine and hand dishwashing agents

#106
20050098499
2005-05-12

Process for pre-treating and desalinating sea water

#107
14998774
2019-05-07

Treatment of saline streams

#108
14544317
2019-04-16

Effective de-scaling for desalination plants and a new brine-forward multi-stage flash concept