Patents-Review.com
ClassID:

86294 ⎘

C02F1/64 - CPC Classification

Classification description:

Treatment of water, waste water, or sewage by removing specified dissolved compounds; Heavy metal compounds of iron or manganese

Sub-classes:
Recent Application in this class:
#1
20250344680
2025-11-13

RECIRCULATING AQUACULTURE SYSTEM AND METHOD

 #2
20250171342
2025-05-29

WASTEWATER TREATMENT PROCESS IN PRODUCTION OF NICKEL COBALT HYDROXIDE

 #3
20240229777
2024-07-11

PROCESS FOR PRODUCING GEOTHERMAL POWER, SELECTIVE REMOVAL OF SILICA AND IRON FROM BRINES, AND IMPROVED INJECTIVITY OF TREATED BRINES

 #4
20240228333
2024-07-11

PRODUCED WATER TREATMENT FOR DIRECT INJECTION USING MECHANICALLY ASSISTED FORWARD OSMOSIS

 #5
20240132379
2024-04-25

PRODUCED WATER TREATMENT FOR DIRECT INJECTION USING MECHANICALLY ASSISTED FORWARD OSMOSIS

 #6
20240057567
2024-02-22

RECIRCULATING AQUACULTURE SYSTEM AND METHOD

 #7
20220356088
2022-11-10

SELECTIVE REMOVAL OF CHARGED SPECIES

 #8
20220315463
2022-10-06

METHOD OF TREATING WATER CONTAINING ARSENIC AND MANGANESE

 #9
20220306492
2022-09-29

Regenerable nanoparticle for removing manganese and preparatory and use methods

 #10
20210363037
2021-11-25

METHOD OF TREATING WATER CONTAINING ARSENIC AND MANGANESE

 #11
20210140412
2021-05-13

Process for producing geothermal power, selective removal of silica and iron from brines, and improved injectivity of treated brines

 #12
20200392024
2020-12-17

Water treatment apparatus and water treatment method

 #13
20200317552
2020-10-08

High-purity separation method of iron ions from an aqueous solution containing heavy metal ions

 #14
20200071197
2020-03-05

Process for treatment of wastewater

 #15
20180134583
2018-05-17

Liquid treatment system and method

 #16
20180111110
2018-04-26

Filtration aid and filtration treatment method

 #17
20150345024
2015-12-03

Method for regenerating plating solution

 #18
20140366535
2014-12-18

Process for producing geothermal power, selective removal of silica and iron from brines, and improved injectivity of treated brines

 #19
20140275473
2014-09-18

Process for purification of diphenyl carbonate for the manufacturing of high quality polycarbonate

 #20
20140190907
2014-07-10

Upper-layer cleaning device for water treatment device, and method for cleaning water treatment device filter layer

 #21
20140124447
2014-05-08

Formulations and methods for removing heavy metals from waste solutions containing chelating agents

 #22
20140042104
2014-02-13

Process for feed-water oxygenating treatment in boiler in power station

 #23
20130292337
2013-11-07

Polymeric iron chelating agent

 #24
20130213896
2013-08-22

Methods for treating a ferrous metal substrate

 #25
20130068697
2013-03-21

Process for depleting calcium and/or iron from geothermal brines

 #26
20130022686
2013-01-24

COMBINATIONS OF LIQUID FILTRATION MEDIA AND METHODS FOR ENHANCED FILTRATION OF SELECTED WATER CONTAMINANTS

 #27
20130001173
2013-01-03

Method for a treatment for wastewater containing aluminum, magnesium, and manganese

 #28
20110049062
2011-03-03

Method of removing iron and calcium from a geothermal brine

 #29
20090020482
2009-01-22

Method for removing contaminant trace species, especially arsenic, from water

 #30
20080179256
2008-07-31

System and method for chemical-free metal particle removal from a liquid media

 #31
20050252862
2005-11-17

Method for treating water containing iron, manganese and arsenic