ClassID:

119402

C22B19/24 - CPC Classification

Classification description:

Obtaining zinc or zinc oxide; Obtaining zinc otherwise than by distilling with leaching with alkaline solutions, e.g. ammonia

Recent Application in this class:
#1
20250137090
2025-05-01

Compositions and processes for the extraction of metals using non-aqueous solvents

#2
20250030074
2025-01-23

METHOD FOR RECOVERING VALUABLE MATERIALS FROM BATTERIES

#3
20230192488
2023-06-22

Method of separating and recovering bromine from printed circuit board incineration ash by two-step process

#4
20230124749
2023-04-20

AMMONIUM COMPLEX SYSTEM-BASED METHOD FOR SEPARATING AND PURIFYING LEAD, ZINC, CADMIUM, AND COPPER

#5
20200165697
2020-05-28

INTEGRATED RECOVERY OF METALS FROM COMPLEX SUBSTRATES

#6
20180237886
2018-08-23

METHOD FOR RECOVERING ZINC FROM SOLUTION

#7
20180171432
2018-06-21

Processes for recovering non-ferrous metals from solid matrices

#8
20160102383
2016-04-14

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

#9
20160053342
2016-02-25

Integrated recovery of metals from complex substrates

#10
20150252446
2015-09-10

Method for producing a high-purity nanometer zinc oxide from steel plant smoke and dust by ammonia decarburization

#11
20150240327
2015-08-27

Method for producing a high-purity nanometer zinc oxide from low-grade zinc oxide ore by ammonia decarburization

#12
20150114183
2015-04-30

Processes for recovering non-ferrous metals from solid matrices

#13
20140205519
2014-07-24

Process for recovering zinc and/or zinc oxide II

#14
20130216456
2013-08-22

Selective leach recovery of zinc from a composite sulphide ore deposit, tailings, crushed ore or mine sludge

#15
20130064743
2013-03-14

Process for purifying zinc oxide

#16
20130025412
2013-01-31

Method for leaching zinc from a zinc ore

#17
20110293493
2011-12-01

Method for extracting zinc from aqueous ammoniacal solutions

#18
20100180728
2010-07-22

Method for ammoniacal leaching

#19
20080011123
2008-01-17

Alkaline electro-hydrometallurgical process for Zn extraction from electric arc furnace dust

#20
20070178031
2007-08-02

Process for upgrading an ore or concentrate

#21
20070041883
2007-02-22

Process for hydrometallurgical treatment of electric arc furnace dust

#22
18798726
2025-02-04

Method for removing arsenic from copper smelting soot and comprehensive recovery of valuable metals