ClassID:

119323

C22B11/04 - page 2 - CPC Classification

Classification description:

Obtaining noble metals by wet processes

Recent Application in this class:
#301
20130001093
2013-01-03

METHOD AND APPARATUS FOR ELECTROWINNING COPPER USING AN ATMOSPHERIC LEACH WITH FERROUS/FERRIC ANODE REACTION ELECTROWINNING

#302
20120328494
2012-12-27

Method for recovering indium, silver, gold and rare, precious and base metals from complex oxide and sulfide ores

#303
20120304828
2012-12-06

Process of leaching gold

#304
20120234138
2012-09-20

Method of recovering gold from dilute gold solution

#305
20120227545
2012-09-13

Aqueous leaching process for recovery of precious metals with addition of di-thiooxamide ligand

#306
20120222519
2012-09-06

Method of leaching copper and gold from sulfide ores

#307
20120219479
2012-08-30

Adsorbent and method of collecting precious metal using the same

#308
20120183433
2012-07-19

Co-current and counter current resin-in-leach in gold leaching processes

#309
20120137831
2012-06-07

Method and apparatus for leaching metal from mining ore

#310
20120128528
2012-05-24

Alkaline and acid pressure oxidation of precious metal-containing materials

#311
20120125156
2012-05-24

Methods for production of silver nanostructures

#312
20120103138
2012-05-03

Method of oxidative leaching of sulfide ores and/or concentrates

#313
20120090433
2012-04-19

ENHANCED RECOVERY OF GOLD

#314
20120090430
2012-04-19

Ionic liquid solvents of perhalide type for metals and metal compounds

#315
20120067172
2012-03-22

Metal recovery method using protonemata of moss plants

#316
20120067170
2012-03-22

EXTRACTION OF GOLD FROM CATHODE ASSOCIATED GOLD CONCENTRATES

#317
20120067169
2012-03-22

METHOD FOR PROCESSING PRECIOUS METAL SOURCE MATERIALS

#318
20120027652
2012-02-02

METATHETIC COPPER CONCENTRATE ENRICHMENT

#319
20120014860
2012-01-19

Method for recovering nitric acid and purifying silver nitrate electrolyte

#320
20110314967
2011-12-29

Improving the recovery of precious metals from recalcitrant refractory ore

#321
20110308356
2011-12-22

METHOD FOR SORPTION RECOVERY OF PRECIOUS METALS

#322
20110290657
2011-12-01

Process for gold and silver leaching with thiourea solutions

#323
20110259148
2011-10-27

Method for aqueous gold thiosulfate extraction using copper-cyanide pretreated carbon adsorption

#324
20110247459
2011-10-13

Compound, metal extractant, and application of the same

#325
20110185853
2011-08-04

Methods for the production of silver nanowires

#326
20110165041
2011-07-07

Processes for the recovery of ruthenium from materials containing ruthenium or ruthenium oxides or from ruthenium-containing noble metal ore concentrates

#327
20110155651
2011-06-30

Separation of copper minerals from pyrite using air-metabisulfite treatment

#328
20110132147
2011-06-09

Method for thiosulfate leaching of precious metal-containing materials

#329
20110113927
2011-05-19

Separation reagent of platinum group metal, method for separating and recovering platinum group metal, and amide-containing tertiary amine compound

#330
20110091365
2011-04-21

Picolylamine resins

#331
20110011216
2011-01-20

PROCESS FOR RECOVERING METALS FROM RESINS

#332
20110011215
2011-01-20

Rare metal extractant

#333
20110011214
2011-01-20

Separation of fine particle precious metals from clays and other gangue materials through application of diluted solution of a silicon chemical

#334
20100326920
2010-12-30

Carbon retention screen with variable discharge head

#335
20100296987
2010-11-25

Method for the Recovery of Gold from a Gold-Containing Solution

#336
20100269634
2010-10-28

PRODUCTION OF METAL NANOPARTICLES

#337
20100261827
2010-10-14

Isolable and redispersable transition metal nanoparticles their preparation and use as IR absorbers

#338
20100257978
2010-10-14

Process for recovering platinum group metals from ores and concentrates

#339
20100224029
2010-09-09

Method for separation and recovery of noble metals

#340
20100213133
2010-08-26

Enrichment process for a PGM-metals containing stream

#341
20100206135
2010-08-19

Recycling of solids in oxidative pressure leaching of metals using halide ions

#342
20100199808
2010-08-12

Method for recovering metal values from refractory sulfide ore

#343
20100180730
2010-07-22

Method of separating rhodium from platinum and/or palladium

#344
20100143183
2010-06-10

Process for manufacture of nanometric, monodisperse, stable metallic silver and a product obtained therefrom

#345
20100135875
2010-06-03

Apparatus for removing ruthenium from solution containing platinum group metal

#346
20100132509
2010-06-03

Method for thiosulfate leaching of precious metal-containing materials

#347
20100116093
2010-05-13

Method of recovering silver using anion-exchange resin

#348
20100116092
2010-05-13

Process for extracting gold from gold-bearing ore

#349
20100111751
2010-05-06

Method for thiosulfate leaching of precious metal-containing materials

#350
20100095807
2010-04-22

SEPARATION REAGENT OF PLATINUM GROUP METAL, METHOD FOR SEPARATING AND RECOVERING PLATINUM GROUP METAL, AND AMIDE-CONTAINING TERTIARY AMINE COMPOUND

#351
20100025259
2010-02-04

Precious metal recovery from solution

#352
20100024603
2010-02-04

Reduction of lime consumption when treating refractory gold ores or concentrates

#353
20100021559
2010-01-28

Zeolite supported metallic nanodots

#354
20100021370
2010-01-28

Flotation reagents and flotation processes utilizing same

#355
20100018351
2010-01-28

RECYCLING OF SOLIDS IN OXIDATIVE PRESSURE LEACHING OF METALS USING HALIDE IONS

#356
20100018346
2010-01-28

Synthesis of PtCo nanoparticles

#357
20090297412
2009-12-03

Solid/liquid reaction process and vessel incorporating buoyant covers

#358
20090293680
2009-12-03

Processing of Metal Values from Concentrates

#359
20090293679
2009-12-03

Extraction process for metals like gold and platinum including fine grinding, pulping and oxygenating

#360
20090277303
2009-11-12

SEPARATION AND RECOVERY OF PRECIOUS METALS USING POLYMER MATERIALS

#361
20090272227
2009-11-05

Metal extraction without cyanide

#362
20090242231
2009-10-01

SILVER NANOWIRE, PRODUCTION METHOD THEREOF, AND AQUEOUS DISPERSION

#363
20090241736
2009-10-01

Method for recovering metal from ore

#364
20090241735
2009-10-01

Process of leaching gold

#365
20090236570
2009-09-24

Preparation of stable silver colloids

#366
20090235784
2009-09-24

PRE-TREATMENT OF FEED TO NON-STIRRED SURFACE BIOREACTOR

#367
20090209027
2009-08-20

INTRODUCTION OF MICROORGANISMS IN BIO-ASSISTED HEAP LEACHING OPERATIONS

#368
20090196788
2009-08-06

Methods for the production of silver nanowires

#369
20090191107
2009-07-30

PROCESSES FOR THE RECOVERY OF RUTHENIUM FROM MATERIALS CONTAINING RUTHENIUM ORRUTHENIUM OXIDES OR FROM RUTHENIUM-CONTAINING NOBLE METAL ORE CONCENTRATES

#370
20090183997
2009-07-23

Method and apparatus for electrowinning copper using an atmospheric leach with ferrous/ferric anode reaction electrowinning

#371
20090183599
2009-07-23

MINERAL EXTRACTION SYSTEM AND PROCESS

#372
20090183597
2009-07-23

Metal extraction from various chalcogenide minerals through interaction with separate electric fields and magnetic fields supplied by electromagnetic energy

#373
20090158894
2009-06-25

Method for recovering gold

#374
20090158893
2009-06-25

MICROBIAL PRE-TREATMENT OF DOUBLE REFRACTORY GOLD ORES

#375
20090158891
2009-06-25

PROCESS FOR RECOVERING PLATINUM GROUP METALS, RHENIUM AND GOLD

#376
20090124792
2009-05-14

Fluorescent polymethine cyanine dyes

#377
20090123350
2009-05-14

Recovery of precious metals and their compounds from natural quartz ore using sodium silicate manufacturing techniques

#378
20090100969
2009-04-23

Templates for controlling synthesis of nanoparticles into discrete assemblies

#379
20090074608
2009-03-19

Process for mercury control during pressure oxidation

#380
20090071840
2009-03-19

METHOD FOR EXTRACTING METALS FROM ORE

#381
20090071296
2009-03-19

Process for controlling acid in sulfide pressure oxidation processes

#382
20090071295
2009-03-19

Method to improve recovery of gold from double refractory gold ores

#383
20090038440
2009-02-12

Method for the recovery of gold from sulphide concentrate

#384
20090035833
2009-02-05

Method for recovering metal values from refractory sulfide ore

#385
20090008840
2009-01-08

Apparatus for removing ruthenium from solution containing platinum group metal

#386
20090007729
2009-01-08

Method of precious metal recovery

#387
20090004728
2009-01-01

Method of biotreatment for solid materials in a nonstirred surface bioreactor

#388
20080311647
2008-12-18

Method of biotreating a solid material comprising an organic compound

#389
20080302671
2008-12-11

Sequential lixivation and precipitation of metals from refractory ores by utilising variable oxidation reduction potentials and a variable PH system

#390
20080247925
2008-10-09

SEPARATION AND RECOVERY OF PRECIOUS METALS USING POLYMER MATERIALS

#391
20080236337
2008-10-02

Method for recovering rhodium

#392
20080223176
2008-09-18

Metal recovery from a tank bioleaching solution with the use of coated magnetic particles

#393
20080213592
2008-09-04

Silver platelets comprising palladium

#394
20080135460
2008-06-12

Separation apparatus

#395
20080128357
2008-06-05

Separation of platinum group metals

#396
20080128354
2008-06-05

METHOD FOR WASHING FILTRATION MEMBRANES

#397
20080112864
2008-05-15

Gold and silver recovery from polymetallic sulfides by treatment with halogens

#398
20080110296
2008-05-15

Process for recovering platinum group metals, rhenium and gold

#399
20080105088
2008-05-08

Method for thiosulfate leaching of precious metal-containing materials

#400
20080078269
2008-04-03

Method for leaching gold

#401
20080041270
2008-02-21

Method for manufacturing metal nanoparticles

#402
20080035895
2008-02-14

Silver powder and method for producing same

#403
20080003130
2008-01-03

Methods for production of silver nanostructures

#404
20070292326
2007-12-20

Process for reduced alkali consumption in the recovery of silver

#405
20070272055
2007-11-29

Process for Gold and Silver Leaching with Thiourea Solutions

#406
20070266827
2007-11-22

Thiosulphate Leach Process

#407
20070248513
2007-10-25

Method for recovering rhodium and silver from hydrochloric acid

#408
20070172404
2007-07-26

Extractant for palladium and method for separation and recovery of palladium

#409
20070137437
2007-06-21

Thiosulfate generation in situ in precious metal recovery

#410
20070131058
2007-06-14

Process for recovering platinum group metals from ores and concentrates

#411
20070107550
2007-05-17

Method for recovering metal values from concentrates of sulfide minerals

#412
20070098628
2007-05-03

Methods and apparatus for processing mixtures of liquids and solids

#413
20070098609
2007-05-03

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

#414
20070089566
2007-04-26

Method for thiosulfate leaching of precious metal-containing materials

#415
20070039420
2007-02-22

Method for improving metals recovery using high temperature pressure leaching

#416
20070034052
2007-02-15

Production of metal nanoparticles

#417
20070028721
2007-02-08

Treatment of base metal concentrate by a two-step bioleaching process

#418
20070022843
2007-02-01

Recovery of platinum group metals

#419
20070022840
2007-02-01

Method of separation/purification for high-purity silver chloride, and process for producing high-purity silver by the same

#420
20070014709
2007-01-18

Recovering metals from sulfidic materials

#421
20060254989
2006-11-16

Process for preparing silver deposited carbon covered alumina catalyst

#422
20060219571
2006-10-05

Electrogenerated chlorine or chloride compound leaching and its apparatus

#423
20060191377
2006-08-31

METHOD FOR PROCESSING ELEMENTAL SULFUR-BEARING MATERIALS USING HIGH TEMPERATURE PRESSURE LEACHING

#424
20060189113
2006-08-24

Metal nanoparticle compositions

#425
20060178260
2006-08-10

Gold-based alloy nanoparticles for use in fuel cell catalysts

#426
20060159603
2006-07-20

Separation of metal nanoparticles

#427
20060144192
2006-07-06

Method for processing sulfide minerals and concentrates

#428
20060144191
2006-07-06

Method for recovery of nonferrous, rare and precious metals from robust minerals

#429
20060133974
2006-06-22

Reduction of lime consumption when treating refractor gold ores or concentrates

#430
20060068989
2006-03-30

Carbon-intersticed metallic palladium, palladium catalyst and method for preparation thereof, and method for producing alpha,beta-unsaturated carboxylic acid

#431
20060068025
2006-03-30

Silver microribbon composition and method of making

#432
20060065075
2006-03-30

Silver nanoparticles made in solvent

#433
20060035356
2006-02-16

Introduction of microorganisms in bio-assisted heap leaching operations

#434
20060002834
2006-01-05

Processing of acid-consuming mineral materials involving treatment with acidic biooxidation effluent

#435
20050229747
2005-10-20

Silver crystals through Tollen's reaction

#436
20050218078
2005-10-06

Separation of platinum group metals

#437
20050217422
2005-10-06

Method for refining concentrate containing precious metals

#438
20050211019
2005-09-29

Heap leach process

#439
20050188788
2005-09-01

Silver powder and method for producing same

#440
20050186129
2005-08-25

Metallic colloid particles and process for producing same

#441
20050183543
2005-08-25

Silver powder made of silver particles, each to which fine silver particles adhere and process of producing the same

#442
20050167339
2005-08-04

Composition formed of mercaptans which can be used in a process for the flotation of ores

#443
20050165120
2005-07-28

Process for phase transfer of hydrophobic nanoparticles

#444
20050155459
2005-07-21

Method for processing elemental sulfur-bearing materials using high temperature pressure leaching

#445
20050155458
2005-07-21

Method for improving metals recovery using high temperature pressure leaching

#446
20050124765
2005-06-09

Adsorbent for recovering useful rare metals by adsorption

#447
20050121390
2005-06-09

Separation and recovery of precious metals using polymer materials

#448
20050121337
2005-06-09

Method and apparatus for the electrodissolution of elements

#449
20050112741
2005-05-26

Method of biotreatment for solid materials in a nonstirred surface bioreactor

#450
20050087037
2005-04-28

Recovery of natural nanoclusters and the nanoclusters isolated thereby

#451
20050066774
2005-03-31

Process for mutual separation of platinum group metals

#452
20050005737
2005-01-13

Method for recovering metal values from concentrates of sulfide minerals

#453
18948585
2025-04-29

Polymetallic-ore beneficiation and separation reagent, preparation method and use thereof

#454
15954646
2020-09-01

Concentrated synthesis of monodispersed gold nanorods

#455
15821304
2020-05-12

Strategic metal and mineral element ore processing using mixing and oxidant treatment

#456
15262387
2017-07-04

Rotary interstage screen apparatus

#457
15176758
2016-11-29

Molecularly imprinted polymer beads for extraction of metals and uses thereof

#458
15147873
2017-05-02

Synthesis of metal nanoparticles using an extract of terfeziaceae

#459
15145781
2017-05-02

Functionalized silica for the synthesis of metal nanoparticles

#460
14170444
2016-04-05

Method for synthesizing metal nanowires in anodic alumina membranes using solid state reduction