ClassID:

119497

C22B34/32 - CPC Classification

Classification description:

Obtaining refractory metals; Obtaining chromium, molybdenum or tungsten Obtaining chromium

Sub-classes:
Recent Application in this class:
#1
20260002225
2026-01-01

SYSTEM FOR PROCESSING RED MUD AND METHOD OF PROCESSING RED MUD

#2
20250276290
2025-09-04

APPARATUS AND METHOD FOR SEPARATION OF METAL-BEARING PHASES USING ELECTRODIALYSIS

#3
20250163537
2025-05-22

TREATMENT SYSTEM FOR REMOVING IRON-ALUMINUM-CHROMIUM REACTION PRODUCTS IN LEACHING SOLUTION OF LATERITE NICKEL ORE

#4
20240401168
2024-12-05

Process for Transition Metal Oxide Reduction

#5
20240327936
2024-10-03

METHOD FOR RECOVERING IRON AND VALUABLE METALS FROM ELECTRIC ARC FURNACE DUST

#6
20240308843
2024-09-19

SYSTEMS AND METHODS FOR GENERATING HYDROGEN AND MAGNETITE FROM ROCK

#7
20240043960
2024-02-08

Process for transition metal oxide reduction

#8
20240035115
2024-02-01

METHOD FOR PRODUCING FERRONICKEL AND REMOVING CHROMIUM FROM NICKEL LATERITE ORE

#9
20230271827
2023-08-31

Systems and methods for generating hydrogen and magnetite from rock

#10
20230227316
2023-07-20

CIRCULAR CARBON PROCESS

#11
20230102312
2023-03-30

SYSTEMS AND METHODS FOR GENERATING HYDROGEN AND MAGNETITE FROM ROCK

#12
20220356543
2022-11-10

Method for co-extraction of vanadium, titanium and chromium from vanadium slag

#13
20220316027
2022-10-06

METHOD FOR RECOVERING CHROMIUM CONTAINED IN A BATH FOR PICKLING METALLIC MATERIALS AND FACILITY FOR IMPLEMENTING SAME

#14
20210079488
2021-03-18

SYSTEM FOR PROCESSING RED MUD AND METHOD OF PROCESSING RED MUD

#15
20200282252
2020-09-10

Method for detoxifying chromium slag by using high sulfur coal

#16
20190284661
2019-09-19

Treatment method for resource recycling of hexavalent chromium-containing residues

#17
20190194777
2019-06-27

Detoxification treatment method for extracting and recycling chromium from hexavalent chromium-containing residues

#18
20190119784
2019-04-25

Method of direct reduction of chromite with cryolite additive

#19
20190003013
2019-01-03

Processes for producing low nitrogen metallic chromium and chromium-containing alloys and the resulting products

#20
20180339285
2018-11-29

Method of preparation and application of ion-keeper adsorbent

#21
20180282176
2018-10-04

METHOD FOR REDUCING HEXAVALENT CHROMIUM IN OXIDIC SOLIDS

#22
20170268080
2017-09-21

Process for recycling chromium from waste water containing hexavalent chromium

#23
20170191145
2017-07-06

PROCESSES FOR PRODUCING LOW NITROGEN METALLIC CHROMIUM AND CHROMIUM-CONTAINING ALLOYS AND THE RESULTING PRODUCTS

#24
20170158530
2017-06-08

Recovering chrome from a tannery process

#25
20170121792
2017-05-04

Processes for producing low nitrogen essentially nitride-free chromium and chromium plus niobium-containing nickel-based alloys and the resulting chromium and nickel-based alloys

#26
20160340757
2016-11-24

Scandium recovery method

#27
20160258074
2016-09-08

Treatment of titanium ores

#28
20160122853
2016-05-05

Processes for producing low nitrogen essentially nitride-free chromium and chromium plus niobium-containing nickel-based alloys and the resulting chromium and nickel-based alloys

#29
20160122848
2016-05-05

Processes for producing low nitrogen metallic chromium and chromium-containing alloys and the resulting products

#30
20150252448
2015-09-10

PRODUCTION OF HIGH-GRADE SYNTHETIC RUTILE FROM LOW-GRADE TITANIUM-BEARING ORES

#31
20150111022
2015-04-23

Coating for metal cellular structure and method therefor

#32
20150075065
2015-03-19

METHOD FOR PROCESSING ORGANIC PHASE SUBSTANCE BY USING HALOGEN-CONTAINING CHECICAL OR CHEMICALS AND/OR MIXTURE CONTAINING OXYGEN-CONTAINING OXIDIZER OR OXIDIZERS AND ORGANIC CARBONYL ANALOGUE OR ANALOGUES, AND/OR METHOD FOR EXTRACTING OR DEPOSITING HEAVY ELEMENT SPECIES AND/OR ORGANIC COMPONENTS OF ASPHALTENE AND/OR INORGANIC SUBSTANCE FROM THE ORGANIC PHASE SUBSTANCE BY USING HALOGEN-CONTAINING CHEMICAL OR CHEMICALS AND/OR MIXTURE CONTAINING OXYGEN-CONTAINING OXIDIZER OR OXIDIZERS AND ORGANIC CARBONYL ANALOGUE OR ANALOGUES, AND PLANT USING FOR THE METHOD, AND ORGANIC PHASE SUBSTANCE

#33
20150040728
2015-02-12

Method and apparatus for high temperature production of metals

#34
20140352494
2014-12-04

Methods and systems for producing ferro-chrome in a duplex furnace

#35
20140341791
2014-11-20

Hydrothermal oxidation method for production of alkali metal dichromate from carbon ferrochrome

#36
20140251084
2014-09-11

Methods and systems for reducing chromium containing raw material

#37
20130315804
2013-11-28

Fly Ash and Fly Ash Leachate Treatment

#38
20130221586
2013-08-29

METHOD AND APPARATUS FOR LEACHING METAL FROM MINING ORE

#39
20130220077
2013-08-29

Method and apparatus for high temperature production of metals

#40
20120247271
2012-10-04

PROCESS FOR RECOVERING METALS AND METAL COMPOUNDS FROM MINED ORE AND OTHER METAL-BEARING RAW SOURCE MATERIALS

#41
20120152756
2012-06-21

Treatment of titanium ores

#42
20120137831
2012-06-07

Method and apparatus for leaching metal from mining ore

#43
20120107200
2012-05-03

Process and plant for converting hazardous waste containing chromium VI into non-hazardous waste

#44
20110223072
2011-09-15

Process and plant for converting hazardous waste containing chromium VI into non-hazardous waste

#45
20110058997
2011-03-10

Process for chlorinating resources containing recoverable metals

#46
20100286464
2010-11-11

Methods of Treatment of Chromite Ore Processing Residue

#47
20100278686
2010-11-04

Process for recovering metals and metal compounds from mined ore and other metal-bearing raw source materials

#48
20100257978
2010-10-14

Process for recovering platinum group metals from ores and concentrates

#49
20100143781
2010-06-10

Methods for the preparation and purification of electrolytes for redox flow batteries

#50
20100135876
2010-06-03

PROCESS FOR SOLUBILIZING, REDUCING AND FIXING HEXAVALENT CHROMIUM CONTAINED IN CHROMITE ORE PROCESSING RESIDUE INTO TRIVALENT CHROMIUM

#51
20100087697
2010-04-08

Methods of treatment of chromite ore processing residue

#52
20100037728
2010-02-18

Method for reducing chromium containing raw material

#53
20090071289
2009-03-19

Process for recovering platinum group metals using reductants

#54
20080293559
2008-11-27

Process and plant for converting hazardous waste containing chromium VI into non-hazardous waste

#55
20080255402
2008-10-16

SYSTEM FOR SEPARATING AND EXTRACTING HEAVY METALS FROM POLLUTED LIQUID WASTE

#56
20080156144
2008-07-03

METHOD FOR REDUCING TO METALLIC CHROMIUM THE CHROMIUM OXIDE IN SLAG FROM STAINLESS STEEL PROCESSING

#57
20080103348
2008-05-01

Processes for treatment of solid wastes containing heavy metals

#58
20080087553
2008-04-17

Method of extracting hexavalent chromium

#59
20070227307
2007-10-04

Method for reducing Cr in metallurgical slags containing Cr

#60
20070224097
2007-09-27

Methods of treatment of chromite ore processing residue

#61
20070131058
2007-06-14

Process for recovering platinum group metals from ores and concentrates

#62
20070088188
2007-04-19

Method of treatment, stabilization and heave control for chromite ore processing residues (COPR) and chromium contaminated soils

#63
20060196308
2006-09-07

Method for recovering metallic elements, especially metallic chromium, from slag containing metal oxides in an electric-arc furnace

#64
20060162498
2006-07-27

Direct production of refined metals and alloys

#65
20060123951
2006-06-15

Method for increasing the chrome to iron ratio of chromites products

#66
20060096420
2006-05-11

Method for reducing chromium containing raw material

#67
20060037673
2006-02-23

Chromium-containing metal and manufacturing method thereof

#68
20050061109
2005-03-24

Method for production of metallic elements of high purity such as chromes

#69
20050034561
2005-02-17

Reductive method for production of metallic elements such as chrome using a crucible with a perforated wall