Obtaining tungsten

Industry

CPC
C22B34/36

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Parent Industries

CCHEMISTRY METALLURGY C22Metallurgy C22BPRODUCTION AND REFINING OF METALS PRETREATMENT OF RAW MATERIALS C22B34/00Obtaining refractory metals

Current Industry

C22B34/36Obtaining tungsten

Industries

Patents Grantslast 30 patents

Information Patent Grant
Process for oxidative cleavage of vegetable oils containing monosat...
- Patent number 12,049,682
- Issue date Jul 30, 2024
- Novamont S.p.A.
- Giampietro Borsotti
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for selective recovery of valuable metal from waste denitrif...
- Patent number 12,037,659
- Issue date Jul 16, 2024
- Korea Institute of Geoscience & Mineral Resources
- Jin-Young Lee
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for the recovery of cobalt and tungstic acid and/or its der...
- Patent number 11,603,576
- Issue date Mar 14, 2023
- Novamont S.p.A.
- Giampietro Borsotti
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for decomposing mixed wolframite and scheelite ore in alkali...
- Patent number 11,530,465
- Issue date Dec 20, 2022
- JIANGXI UNIVERSITY OF SCIENCE & TECHNOLOGY
- Linsheng Wan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for decomposing medium-/low-grade scheelite
- Patent number 11,384,410
- Issue date Jul 12, 2022
- Jiangxi University of Science and Technology
- Linsheng Wan
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for leaching precious metals contained in waste denitrificat...
- Patent number 10,913,989
- Issue date Feb 9, 2021
- Korea Institute of Geoscience & Mineral Resources
- Jin-Young Lee
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Method for preparing pressed scandia-doped dispenser cathodes using...
- Patent number 10,651,000
- Issue date May 12, 2020
- Beijing University of Technology
- Wei Liu
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method for recovering at least one valuable containing tungsten
- Patent number 10,538,849
- Issue date Jan 21, 2020
- JX Nippon Mining & Metals Corporation
- Toshifumi Kawamura
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the recovery of cobalt and tungstic acid and/or its der...
- Patent number 10,450,631
- Issue date Oct 22, 2019
- Novamont S.p.A.
- Giampietro Borsotti
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for producing tungsten
- Patent number 10,422,022
- Issue date Sep 24, 2019
- JX Nippon Mining & Metals Corporation
- Toshifumi Kawamura
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Method for recovering vanadium and tungsten from leach solution of...
- Patent number 10,415,117
- Issue date Sep 17, 2019
- Korea Institute of Geoscience & Mineral Resources
- Jin-Young Lee
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Method for recycling waste cemented carbide by molten salt chemistry
- Patent number 10,369,631
- Issue date Aug 6, 2019
- Na Wang
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method for producing tungsten carbide
- Patent number 10,227,235
- Issue date Mar 12, 2019
- JX Nippon Mining & Metals Corporation
- Toshifumi Kawamura
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Tungsten and vanadium separation
- Patent number 10,221,467
- Issue date Mar 5, 2019
- Cristal USA Inc.
- Sudhir Ramprasad
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Method for crushing hard tungsten carbide scraps
- Patent number 10,161,017
- Issue date Dec 25, 2018
- Korea Institute of Geoscience & Mineral Resources
- Byung-Su Kim
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for leaching valuable metals contained in waste denitrificat...
- Patent number 10,017,839
- Issue date Jul 10, 2018
- Korea Institute of Geoscience & Mineral Resources
- Jin-Young Lee
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Sodium tungstate production method
- Patent number 10,011,890
- Issue date Jul 3, 2018
- A.L.M.T. Corp.
- Takeshi Itakura
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Methods for reprocessing used catalysts
- Patent number 9,808,795
- Issue date Nov 7, 2017
- Tropinon Enterprises Ltd.
- Martin Pley
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for producing sodium tungstate, method for collecting tungst...
- Patent number 9,512,504
- Issue date Dec 6, 2016
- A.L.M.T. Corp.
- Yoshiharu Yamamoto
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for recovering tungsten compound
- Patent number 9,447,478
- Issue date Sep 20, 2016
- KYOCERA Corporation
- Yoshitake Terashi
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Fusion process using an alkali metal metalate
- Patent number 9,433,038
- Issue date Aug 30, 2016
- Tundra Composites, LLC
- Rodney K. Williams
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Retrieval of high value refractory metals from alloys and mixtures
- Patent number 9,322,081
- Issue date Apr 26, 2016
- Orchard Material Technology, LLC
- Lawrence F. McHugh
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for producing sodium tungstate, method for collecting tungst...
- Patent number 9,249,479
- Issue date Feb 2, 2016
- A.L.M.T. Corp.
- Yoshiharu Yamamoto
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Fusion process using an alkali metal metalate
- Patent number 9,150,426
- Issue date Oct 6, 2015
- Tundra Composites, LLC
- Rodney Kieth Williams
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Composition for collecting metal component
- Patent number 8,979,974
- Issue date Mar 17, 2015
- National Institute of Advanced Industrial Science and Technology
- Katsuhiro Nomura
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of separating and recovering metal elements
- Patent number 8,920,535
- Issue date Dec 30, 2014
- Mitsubishi Heavy Industries, Ltd.
- Masashi Kiyosawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for the preparation of anhydrous hydrogen halides, inorganic...
- Patent number 8,834,830
- Issue date Sep 16, 2014
- Midwest Inorganics LLC
- Gregorio Tarancon
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for extracting tungsten from scheelite
- Patent number 8,771,617
- Issue date Jul 8, 2014
- Central South University
- Zhongwei Zhao
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recycling of tungsten carbides
- Patent number 8,685,137
- Issue date Apr 1, 2014
- Minpro Aktiebolag
- Johan Arvidsson
- C21 - METALLURGY OF IRON
Information Patent Grant
Method for producing sodium tungstate, method for collecting tungst...
- Patent number 8,632,747
- Issue date Jan 21, 2014
- A.L.M.T. Corp.
- Yoshiharu Yamamoto
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
LOW TEMPERATURE REDUCTION OF METAL OXIDES
- Publication number 20230295767
- Publication date Sep 21, 2023
- KINALTEK PTY. LTD.
- Jawad Haidar
- B22 - CASTING POWDER METALLURGY
Information Patent Application
METHOD FOR RECOVERING METALS FROM TUNGSTEN-CONTAINING METALLIC MATE...
- Publication number 20230265574
- Publication date Aug 24, 2023
- National Tsing-Hua University
- Chih-Huang LAI
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
PROCESS FOR THE RECOVERY OF COBALT AND TUNGSTIC ACID AND/OR ITS DER...
- Publication number 20230193420
- Publication date Jun 22, 2023
- Novamont S.p.A.
- Giampietro BORSOTTI
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Method for extracting a refractory metal from an ore, a concentrate...
- Publication number 20220364205
- Publication date Nov 17, 2022
- Paris Sciences et Lettres
- Grégory LEFEVRE
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
TUNGSTEN RECOVERY METHOD
- Publication number 20220136082
- Publication date May 5, 2022
- MITSUBISHI MATERIALS CORPORATION
- Daisuke Haraguchi
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD FOR SELECTIVE RECOVERY OF VALUABLE METAL FROM WASTE DENITRIF...
- Publication number 20210130928
- Publication date May 6, 2021
- KOREA INSTITUTE OF GEOSCIENCE & MINERAL RESOURCES
- Jin-Young LEE
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR DECOMPOSING MEDIUM-/LOW-GRADE SCHEELITE
- Publication number 20200190627
- Publication date Jun 18, 2020
- JIANGXI UNIVERSITY OF SCIENCE & TECHNOLOGY
- Linsheng WAN
- C01 - INORGANIC CHEMISTRY
Information Patent Application
METHOD FOR DECOMPOSING MIXED WOLFRAMITE AND SCHEELITE ORE IN ALKALI...
- Publication number 20200190626
- Publication date Jun 18, 2020
- JIANGXI UNIVERSITY OF SCIENCE & TECHNOLOGY
- Linsheng WAN
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
PROCESS FOR THE RECOVERY OF COBALT AND TUNGSTIC ACID AND/OR ITS DER...
- Publication number 20200010923
- Publication date Jan 9, 2020
- Novamont S.p.A.
- Giampietro BORSOTTI
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
TUNGSTEN AND VANADIUM SEPARATION
- Publication number 20180163283
- Publication date Jun 14, 2018
- Cristal USA Inc.
- Sudhir Ramprasad
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR RECOVERING AT LEAST ONE VALUABLE CONTAINING TUNGSTEN
- Publication number 20180087166
- Publication date Mar 29, 2018
- JX NIPPON MINING & METALS CORPORATION
- Toshifumi KAWAMURA
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
METHOD FOR PRODUCING TUNGSTEN
- Publication number 20180080101
- Publication date Mar 22, 2018
- JX NIPPON MINING & METALS CORPORATION
- Toshifumi KAWAMURA
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
METHOD FOR PRODUCING TUNGSTEN CARBIDE
- Publication number 20180072576
- Publication date Mar 15, 2018
- JX NIPPON MINING & METALS CORPORATION
- Toshifumi KAWAMURA
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
Method for preparing pressed scandia-doped dispenser cathodes using...
- Publication number 20170345608
- Publication date Nov 30, 2017
- Beijing University of Technology
- Wei Liu
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
PROCESS FOR THE RECOVERY OF COBALT AND TUNGSTIC ACID AND/OR ITS DER...
- Publication number 20170321299
- Publication date Nov 9, 2017
- Novamont S.p.A.
- Giampietro BORSOTTI
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR RECYCLING WASTE CEMENTED CARBIDE BY MOLTEN SALT CHEMISTRY
- Publication number 20170209933
- Publication date Jul 27, 2017
- Na Wang
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR LEACHING PRECIOUS METALS CONTAINED IN WASTE DENITRIFICAT...
- Publication number 20170073795
- Publication date Mar 16, 2017
- KOREA INSTITUTE OF GEOSCIENCE & MINERAL RESOURCES
- Jin-Young LEE
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHODS FOR REPROCESSING USED CATALYSTS
- Publication number 20170050183
- Publication date Feb 23, 2017
- Martin PLEY
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR RECOVERING VANADIUM AND TUNGSTEN FROM LEACH SOLUTION OF...
- Publication number 20160376682
- Publication date Dec 29, 2016
- Korea Institute of Geoscience and Mineral Resource
- Jin-Young LEE
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR CRUSHING HARD TUNGSTEN CARBIDE SCRAPS
- Publication number 20160355907
- Publication date Dec 8, 2016
- KOREA INSTITUTE OF GEOSCIENCE & MINERAL RESOURCES
- Byung-Su KIM
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
SODIUM TUNGSTATE PRODUCTION METHOD
- Publication number 20160024615
- Publication date Jan 28, 2016
- A.L.M.T. CORP.
- Takeshi ITAKURA
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR RECOVERING TUNGSTEN COMPOUND
- Publication number 20150329935
- Publication date Nov 19, 2015
- Kyocera Corporation
- Yoshitake TERASHI
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR SYNTHESIZING NANOWIRES AND NANOFOAM
- Publication number 20150209864
- Publication date Jul 30, 2015
- United Technologies Corporation
- Weina Li
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR LEACHING VALUABLE METALS CONTAINED IN WASTE DENITRIFICAT...
- Publication number 20150203938
- Publication date Jul 23, 2015
- KOREA INSTITUTE OF GEOSCIENCE & MINERAL RESOURCES
- Jin-Young Lee
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
RECYCLING OF TUNGSTEN CARBIDES
- Publication number 20140165784
- Publication date Jun 19, 2014
- MINPRO AKTIEBOLAG
- Johan Arvidsson
- C21 - METALLURGY OF IRON
Information Patent Application
METHOD FOR PRODUCING SODIUM TUNGSTATE, METHOD FOR COLLECTING TUNGST...
- Publication number 20140119998
- Publication date May 1, 2014
- A.L.M.T. CORP.
- Yoshiharu Yamamoto
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR PRODUCING SODIUM TUNGSTATE, METHOD FOR COLLECTING TUNGST...
- Publication number 20140112847
- Publication date Apr 24, 2014
- A.L.M.T. CORP.
- Yoshiharu Yamamoto
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR THE PREPARATION OF ANHYDROUS HYDROGEN HALIDES, INORGANIC...
- Publication number 20140070137
- Publication date Mar 13, 2014
- Midwest Inorganics LLC
- GREGORIO TARANCON III
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
COMPOSITION FOR COLLECTING METAL COMPONENT
- Publication number 20130283978
- Publication date Oct 31, 2013
- Katsuhiro Nomura
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD OF SEPARATING AND RECOVERING METAL ELEMENTS
- Publication number 20130283975
- Publication date Oct 31, 2013
- Masashi Kiyosawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Obtaining tungsten

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Process for oxidative cleavage of vegetable oils containing monosat...

Method for selective recovery of valuable metal from waste denitrif...

Process for the recovery of cobalt and tungstic acid and/or its der...

Method for decomposing mixed wolframite and scheelite ore in alkali...

Method for decomposing medium-/low-grade scheelite

Method for leaching precious metals contained in waste denitrificat...

Method for preparing pressed scandia-doped dispenser cathodes using...

Method for recovering at least one valuable containing tungsten

Process for the recovery of cobalt and tungstic acid and/or its der...

Method for producing tungsten

Method for recovering vanadium and tungsten from leach solution of...

Method for recycling waste cemented carbide by molten salt chemistry

Method for producing tungsten carbide

Tungsten and vanadium separation

Method for crushing hard tungsten carbide scraps

Method for leaching valuable metals contained in waste denitrificat...

Sodium tungstate production method

Methods for reprocessing used catalysts

Method for producing sodium tungstate, method for collecting tungst...

Method for recovering tungsten compound

Fusion process using an alkali metal metalate

Retrieval of high value refractory metals from alloys and mixtures

Method for producing sodium tungstate, method for collecting tungst...

Fusion process using an alkali metal metalate

Composition for collecting metal component

Method of separating and recovering metal elements

Method for the preparation of anhydrous hydrogen halides, inorganic...

Method for extracting tungsten from scheelite

Recycling of tungsten carbides

Method for producing sodium tungstate, method for collecting tungst...

Patents Applicationslast 30 patents

LOW TEMPERATURE REDUCTION OF METAL OXIDES

METHOD FOR RECOVERING METALS FROM TUNGSTEN-CONTAINING METALLIC MATE...

PROCESS FOR THE RECOVERY OF COBALT AND TUNGSTIC ACID AND/OR ITS DER...

Method for extracting a refractory metal from an ore, a concentrate...

TUNGSTEN RECOVERY METHOD

METHOD FOR SELECTIVE RECOVERY OF VALUABLE METAL FROM WASTE DENITRIF...

METHOD FOR DECOMPOSING MEDIUM-/LOW-GRADE SCHEELITE

METHOD FOR DECOMPOSING MIXED WOLFRAMITE AND SCHEELITE ORE IN ALKALI...

PROCESS FOR THE RECOVERY OF COBALT AND TUNGSTIC ACID AND/OR ITS DER...

TUNGSTEN AND VANADIUM SEPARATION

METHOD FOR RECOVERING AT LEAST ONE VALUABLE CONTAINING TUNGSTEN

METHOD FOR PRODUCING TUNGSTEN

METHOD FOR PRODUCING TUNGSTEN CARBIDE

Method for preparing pressed scandia-doped dispenser cathodes using...

PROCESS FOR THE RECOVERY OF COBALT AND TUNGSTIC ACID AND/OR ITS DER...

METHOD FOR RECYCLING WASTE CEMENTED CARBIDE BY MOLTEN SALT CHEMISTRY

METHOD FOR LEACHING PRECIOUS METALS CONTAINED IN WASTE DENITRIFICAT...

METHODS FOR REPROCESSING USED CATALYSTS

METHOD FOR RECOVERING VANADIUM AND TUNGSTEN FROM LEACH SOLUTION OF...

METHOD FOR CRUSHING HARD TUNGSTEN CARBIDE SCRAPS

SODIUM TUNGSTATE PRODUCTION METHOD

METHOD FOR RECOVERING TUNGSTEN COMPOUND

METHOD FOR SYNTHESIZING NANOWIRES AND NANOFOAM

METHOD FOR LEACHING VALUABLE METALS CONTAINED IN WASTE DENITRIFICAT...

RECYCLING OF TUNGSTEN CARBIDES

METHOD FOR PRODUCING SODIUM TUNGSTATE, METHOD FOR COLLECTING TUNGST...

METHOD FOR PRODUCING SODIUM TUNGSTATE, METHOD FOR COLLECTING TUNGST...

METHOD FOR THE PREPARATION OF ANHYDROUS HYDROGEN HALIDES, INORGANIC...

COMPOSITION FOR COLLECTING METAL COMPONENT

METHOD OF SEPARATING AND RECOVERING METAL ELEMENTS