ClassID:

119401

C22B19/22 - CPC Classification

Classification description:

Obtaining zinc or zinc oxide; Obtaining zinc otherwise than by distilling with leaching with acids

Recent Application in this class:
#1
20260055007
2026-02-26

METHOD FOR PRODUCING NICKEL SULFATE

#2
20260035766
2026-02-05

PROCESS AND SYSTEM FOR RECOVERING COPPER AND COBALT FROM SULFIDIC MATERIALS

#3
20250349922
2025-11-13

IMPURITY MANAGEMENT PROCESS FOR LITHIUM-ION BATTERY RECYCLING

#4
20250270672
2025-08-28

METHOD FOR RECOVERING PRECURSOR METAL FOR SECONDARY CELL CATHODE MATERIAL USING SYNERGISTIC SOLVENT EXTRACTION APPLIED WITH EXTRACTANT DEGRADATION PREVENTING TECHNOLOGY

#5
20250059623
2025-02-20

Geothermally Powered Hydrometallurgical Zinc Production

#6
20250034677
2025-01-30

Hydrometallurgical process for waste materials of the zinc and steel industries

#7
20240376565
2024-11-14

METHOD FOR REMOVING CHLORINE IN ZINC HYDROMETALLURGY

#8
20240240283
2024-07-18

PROCESS AND PLANT FOR RECYCLING ZINC OXIDE RESIDUES

#9
20230094835
2023-03-30

Process for the recovery of zinc from zinc-bearing raw materials

#10
20220416324
2022-12-29

SYSTEM AND METHOD FOR RECOVERING CONSTITUENTS FROM BATTERIES

#11
20210371953
2021-12-02

Method for the treatment of iron-containing sludge

#12
20210344059
2021-11-04

Process for recovering components from alkaline batteries

#13
20210292869
2021-09-23

Process for recovering non-ferrous metals from industrial mineral residues

#14
20210277497
2021-09-09

Recovery of critical metals from SX-EW copper raffinate and other solutions derived from leaching ores with sulfuric acid

#15
20210062297
2021-03-04

Method of inhibiting degradation of extractant by anhydrous environment avoiding and metal stripping

#16
20210024368
2021-01-28

Method for inhibiting extractant degradation by diluent and extractant input method

#17
20200362435
2020-11-19

Method of extracting metals from polymetallic sulphide ores or concentrates

#18
20200032371
2020-01-30

Method for removing fluoride from a zinc-containing solution or suspension, defluoridated zinc sulfate solution and use thereof, and method for producing zinc and hydrogen fluoride or hydrofluoric acid

#19
20190249272
2019-08-15

Autoclave and method for removing salt from autoclave

#20
20190233302
2019-08-01

Method of recovering iron from zinc sulphate solution

#21
20190177815
2019-06-13

Method for the treatment of iron-containing sludge

#22
20180010208
2018-01-11

Removal of radionuclides from mixtures

#23
20170306442
2017-10-26

Hydrometallurgical process for the recovery of copper, lead or zinc

#24
20170170532
2017-06-15

METHOD FOR RECYCLING VALUABLE METALS FROM SPENT BATTERIES

#25
20170058378
2017-03-02

PROCESS FOR REDUCING THE AMOUNTS OF ZINC (ZN) AND LEAD (PB) IN MATERIALS CONTAINING IRON (FE)

#26
20160369417
2016-12-22

Method for recovery of copper and zinc

#27
20160355906
2016-12-08

Method of ore processing using mixture including acidic leach solution and oxidizing agent

#28
20160160319
2016-06-09

Treatment method of chlorine-containing zinc oxide secondary material

#29
20160138130
2016-05-19

Zinc production method

#30
20160115564
2016-04-28

Method for bioleaching and solvent extraction with selective recovery of copper and zinc from polymetal concentrates of sulfides

#31
20160102383
2016-04-14

System and method for the recovery of metal values from slags, drosses, and other metal-bearing materials

#32
20150329936
2015-11-19

Method for recovery of metals from sulfide ores

#33
20150259766
2015-09-17

Decoating of coated materials

#34
20150225811
2015-08-13

Recovery of zinc from lead slag

#35
20140311296
2014-10-23

Method for leaching a sulphidic metal concentrate

#36
20140212348
2014-07-31

Hydrometallurgical method for recovery of zinc in sulphuric medium starting from sulphidic zinc concentrates with high iron content

#37
20130220824
2013-08-29

Method for producing metal zinc

#38
20130060075
2013-03-07

Method and apparatus for homogenizing and stabilizing an iron-bearing residue

#39
20130025412
2013-01-31

Method for leaching zinc from a zinc ore

#40
20120288424
2012-11-15

Method for the removal of chloride from zinc sulphate solution

#41
20120103138
2012-05-03

Method of oxidative leaching of sulfide ores and/or concentrates

#42
20110268632
2011-11-03

HYDROMETALLURGICAL METHOD FOR THE REUSE OF SECONDARY ZINC OXIDES RICH IN FLUORIDE AND CHLORIDE

#43
20110217222
2011-09-08

Process for the acid digestion of metal-containing compounds

#44
20100189637
2010-07-29

Method for the valorisation of zinc-and sulphate-rich residue

#45
20100167077
2010-07-01

PROCESS FOR PRODUCING PURE METALLIC INDIUM FROM ZINC OXIDE AND/OR SOLUTION CONTAINING THE METAL

#46
20090078087
2009-03-26

PROCESS FOR THE ACID DIGESTION OF METAL-CONTAINING COMPOUNDS

#47
20080170976
2008-07-17

Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals

#48
20070273071
2007-11-29

Method and apparatus for controlling metal separation

#49
20070253878
2007-11-01

Preparation of Zinc Chemicals from the Minor Flow of a Process

#50
20070193413
2007-08-23

Heap bioleaching process for the extraction of zinc

#51
20070098609
2007-05-03

Hydrometallurgical process for the treatment of metal-bearing sulfide mineral concentrates

#52
20060213332
2006-09-28

Method for recovery of zinc by countercurrent leaching

#53
20060144192
2006-07-06

Method for processing sulfide minerals and concentrates

#54
20060088458
2006-04-27

Method for heap and dump leaching coupled with solvent extraction for metal recovery

#55
20050232836
2005-10-20

Process to eliminate both organic and inorganic total carbon in zinc silicate concentrate, with an additional effect of purging both waters and magnesium in the zinc production circuit

#56
20050069473
2005-03-31

Integration processes of the treatments of zinc silicate concentrates or zinc silicate ore and roasted concentrates of zinc sulphides

#57
20050066773
2005-03-31

Heap bioleaching process for the extraction of zinc

#58
16504742
2020-08-25

Method for measuring bis(2,4,4-trimethylpentyl) phosphinic acid concentration by ICP-OES