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PROCESSING OF PIG-IRON
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CHEMISTRY METALLURGY
C21
Iron metallurgy
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C21C
PROCESSING OF PIG-IRON
Sub Industries
C21C1/00
Refining of pig-iron Cast iron
C21C2100/00
Exhaust gas
C21C2200/00
Recycling of waste material
C21C2250/00
Specific additives Means for adding material different from burners or lances
C21C2300/00
Process aspects
C21C3/00
Manufacture of wrought-iron or wrought-steel
C21C5/00
Manufacture of carbon-steel
C21C7/00
Treating molten ferrous alloys
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Patents Grants
last 30 patents
Information
Patent Grant
Method of heating up furnace bottom, and burner lance used in the m...
Patent number
12,259,184
Issue date
Mar 25, 2025
JFE Steel Corporation
Yohei Kitamura
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Molten steel denitrification method and steel production method
Patent number
12,252,754
Issue date
Mar 18, 2025
JFE Steel Corporation
Hidemitsu Negishi
C21 - METALLURGY OF IRON
Information
Patent Grant
Systems and methods for self-reduction of iron ore
Patent number
12,252,753
Issue date
Mar 18, 2025
Charm Industrial, Inc.
Peter Reinhardt
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for controlling nitrogen in steelmaking by spraying hydrogen...
Patent number
12,234,521
Issue date
Feb 25, 2025
Xuanhua Iron and Steel Group Co., Ltd.
Hongbin Wang
C21 - METALLURGY OF IRON
Information
Patent Grant
Degassing method for manufacturing steel
Patent number
12,227,813
Issue date
Feb 18, 2025
United States Steel Corporation
Yun Li
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for recycling chromium oxide and forming chromium-alloy steel
Patent number
12,215,395
Issue date
Feb 4, 2025
SAUDI IRON AND STEEL COMPANY (HADEED)
Mansour Nasser Alharbi
C21 - METALLURGY OF IRON
Information
Patent Grant
Cored wire for out-of-furnace treatment of metallurgical melts
Patent number
12,203,146
Issue date
Jan 21, 2025
RESEARCH AND DEVELOPMENT CENTER NPP, LIMITED LIABILITY COMPANY
Anton Iakovlevich Dynin
C21 - METALLURGY OF IRON
Information
Patent Grant
System and method to sustainable integrated wastewater treatment an...
Patent number
12,195,361
Issue date
Jan 14, 2025
Saudi Arabian Oil Company
Faisal B. Almutairi
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Process and plant for preheating a metal charge fed in continuous t...
Patent number
12,195,815
Issue date
Jan 14, 2025
Silvio Maria Reali
C21 - METALLURGY OF IRON
Information
Patent Grant
System and method for estimating both thickness and wear state of r...
Patent number
12,188,904
Issue date
Jan 7, 2025
Arcelormittal
Pablo Gómez García
C21 - METALLURGY OF IRON
Information
Patent Grant
Cassette design drop out box, combustion chamber, duct and electric...
Patent number
12,181,221
Issue date
Dec 31, 2024
Amerifab, Inc.
Richard J. Manasek
C21 - METALLURGY OF IRON
Information
Patent Grant
Tap hole plug gun
Patent number
12,181,222
Issue date
Dec 31, 2024
TMT-Tapping Measuring Technology SARL
Franck Morellato
C21 - METALLURGY OF IRON
Information
Patent Grant
Operation method of ladle refining treatment
Patent number
12,172,208
Issue date
Dec 24, 2024
JFE Steel Corporation
Kazuaki Hirakawa
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Processing method
Patent number
12,168,814
Issue date
Dec 17, 2024
SUBARU CORPORATION
Yukihiro Hagiwara
C21 - METALLURGY OF IRON
Information
Patent Grant
Degassing method for manufacturing ultra-low carbon, nitrogen, sulf...
Patent number
12,168,808
Issue date
Dec 17, 2024
United States Steel Corporation
Yun Li
C21 - METALLURGY OF IRON
Information
Patent Grant
Device and method for filling a tap hole of an electric arc furnace...
Patent number
12,152,283
Issue date
Nov 26, 2024
BADISCHE STAHL-ENGINEERING GMBH
Danny Schreiber
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and device for controlling temperature of molten steel durin...
Patent number
12,146,200
Issue date
Nov 19, 2024
University of Science and Technology Beijing
Qing Liu
C21 - METALLURGY OF IRON
Information
Patent Grant
High performance alloy for corrosion resistance
Patent number
12,138,674
Issue date
Nov 12, 2024
Saudi Arabian Oil Company
Oladele Owoeye
C21 - METALLURGY OF IRON
Information
Patent Grant
Steel material for steel piston
Patent number
12,134,812
Issue date
Nov 5, 2024
Nippon Steel Corporation
Yutaka Neishi
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for producing chromium-containing molten iron
Patent number
12,134,799
Issue date
Nov 5, 2024
Nippon Steel Corporation
Norifumi Asahara
C21 - METALLURGY OF IRON
Information
Patent Grant
Converter bottom blowing system capable of allowing multiple media...
Patent number
12,123,063
Issue date
Oct 22, 2024
University of Science and Technology Beijing
Kai Dong
C21 - METALLURGY OF IRON
Information
Patent Grant
Ultra-clean rare earth steel and occluded foreign substance modific...
Patent number
12,091,733
Issue date
Sep 17, 2024
Institute of Metal Research Chinese Academy of Sciences
Dianzhong Li
C21 - METALLURGY OF IRON
Information
Patent Grant
High-carbon biogenic reagents and uses thereof
Patent number
12,084,623
Issue date
Sep 10, 2024
Carbon Technology Holdings, LLC
Daniel J. Despen
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Nickel-based superalloy steel and preparation method thereof
Patent number
12,084,748
Issue date
Sep 10, 2024
Zhejiang Dalong New Materials Co., Ltd.
Rongxin Yu
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for smelting low-phosphorus high-manganese steel based on re...
Patent number
12,071,681
Issue date
Aug 27, 2024
North China University of Science and Technology
Tao Li
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of stirring liquid metal in an electric arc furnace
Patent number
12,065,709
Issue date
Aug 20, 2024
Danieli & C. Officine Meccaniche SpA
Damiano Patrizio
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for producing an improved ductile iron alloy with pearlitic...
Patent number
12,065,723
Issue date
Aug 20, 2024
Verdeloong Enterprises Pty. Ltd.
Mathew Lagoon
C21 - METALLURGY OF IRON
Information
Patent Grant
Coaxial dual supersonic speed oxygen flow coherent oxygen lance
Patent number
12,065,708
Issue date
Aug 20, 2024
CISDI ENGINEERING CO., LTD
Xiangdong Liu
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for producing steel
Patent number
12,054,796
Issue date
Aug 6, 2024
Nippon Steel Corporation
Toshiaki Mizoguchi
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for manufacturing a low-carbon nitrogen-containing austeniti...
Patent number
12,024,754
Issue date
Jul 2, 2024
DAYE SPECIAL STEEL CO., LTD.
Xiaoliang Dong
C21 - METALLURGY OF IRON
Patents Applications
last 30 patents
Information
Patent Application
TIN PLATE AND MANUFACTURING METHOD THEREFOR
Publication number
20250101540
Publication date
Mar 27, 2025
INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD...
Yifeng SONG
B22 - CASTING POWDER METALLURGY
Information
Patent Application
METHOD FOR OPERATING A STEELWORKS
Publication number
20250092477
Publication date
Mar 20, 2025
ThyssenKrupp Steel Europe AG
Daniel SCHUBERT
C21 - METALLURGY OF IRON
Information
Patent Application
HOT-ROLLED, LOW-TEMPERATURE-RESISTANT, H-SHAPED STEEL WITH GRADE OF...
Publication number
20250092480
Publication date
Mar 20, 2025
SHANDONG IRON AND STEEL COMPANY LTD.
Zhongxue Wang
B22 - CASTING POWDER METALLURGY
Information
Patent Application
PROCESS FOR PRODUCING CLEAN STEEL WITH A LOW NITROGEN CONTENT USING...
Publication number
20250083218
Publication date
Mar 13, 2025
Ternium Mexico S.A. de C.V.
Francisco Fernando IBARRA CASTILLO
B22 - CASTING POWDER METALLURGY
Information
Patent Application
USE OF RESIDUAL IRON WITHIN GRANULATED METALLIC UNIT PRODUCTION FAC...
Publication number
20250083231
Publication date
Mar 13, 2025
SunCoke Technology and Development LLC
John Francis QUANCI
B22 - CASTING POWDER METALLURGY
Information
Patent Application
CARBON-NEGATIVE METALLURGICAL PRODUCTS
Publication number
20250084495
Publication date
Mar 13, 2025
Carbon Technology Holdings, LLC
James A. Mennell
C21 - METALLURGY OF IRON
Information
Patent Application
PROCESSING GRANULATED METALLIC UNITS WITHIN ELECTRIC ARC FURNACES,...
Publication number
20250084496
Publication date
Mar 13, 2025
SunCoke Technology and Development LLC
John Francis QUANCI
B22 - CASTING POWDER METALLURGY
Information
Patent Application
USE OF A BASIC OXYGEN FURNACE TO PRODUCE GRANULATED METALLIC UNITS,...
Publication number
20250083230
Publication date
Mar 13, 2025
SunCoke Technology and Development LLC
John Francis QUANCI
B22 - CASTING POWDER METALLURGY
Information
Patent Application
CONTINUOUS GRANULATED METALLIC UNITS PRODUCTION, AND ASSOCIATED SYS...
Publication number
20250083232
Publication date
Mar 13, 2025
SunCoke Technology and Development LLC
John Francis QUANCI
B22 - CASTING POWDER METALLURGY
Information
Patent Application
PROCESS FOR PRODUCING HIGH-CARBON BIOGENIC REAGENTS
Publication number
20250075141
Publication date
Mar 6, 2025
Carbon Technology Holdings, LLC
James A. Mennell
C01 - INORGANIC CHEMISTRY
Information
Patent Application
NI-FREE MICRO-ALLOYED HIGH-STRENGTH STEEL WITH ULTRA-LOW TEMPERATUR...
Publication number
20250043375
Publication date
Feb 6, 2025
WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Kaiming WU
C21 - METALLURGY OF IRON
Information
Patent Application
Smelting unit for steel production with a tap weight of between 60...
Publication number
20250043370
Publication date
Feb 6, 2025
SMS group GMBH
Hans-Jürgen ODENTHAL
C21 - METALLURGY OF IRON
Information
Patent Application
COMPOSITE ADDITIVE FOR FORMING INCLUSIONS WITH CORE-SHELL STRUCTURE...
Publication number
20250043371
Publication date
Feb 6, 2025
WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Kaiming WU
C21 - METALLURGY OF IRON
Information
Patent Application
DEGASSING METHOD FOR MANUFACTURING ULTRA-LOW CARBON, NITROGEN, SULF...
Publication number
20250043372
Publication date
Feb 6, 2025
UNITED STATES STEEL CORPORATION
Yun Li
C21 - METALLURGY OF IRON
Information
Patent Application
SEAWATER CORROSION-RESISTANT MARINE ENGINEERING STEEL AND PREPARATI...
Publication number
20250043374
Publication date
Feb 6, 2025
WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Kaiming WU
C21 - METALLURGY OF IRON
Information
Patent Application
HIGH-STRENGTH STEEL WITH EXCELLENT NEUTRAL AQUEOUS MEDIUM CORROSION...
Publication number
20250043378
Publication date
Feb 6, 2025
WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Kaiming WU
C21 - METALLURGY OF IRON
Information
Patent Application
Steelmaking method and associated network of plants
Publication number
20250034668
Publication date
Jan 30, 2025
ARCELORMITTAL
Manfred VAN VLIERBERGHE
C21 - METALLURGY OF IRON
Information
Patent Application
Steelmaking method and associated network of plants
Publication number
20250034669
Publication date
Jan 30, 2025
ARCELORMITTAL
Ignacio BAQUET GONZALEZ
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD FOR CONTROLLING NITROGEN IN STEELMAKING BY SPRAYING HYDROGEN...
Publication number
20240401161
Publication date
Dec 5, 2024
Xuanhua Iron and Steel Group Co., Ltd.
Hongbin WANG
C21 - METALLURGY OF IRON
Information
Patent Application
VACUUM DEGASSING PLANT AND PROCESS FOR THE INERTISATION OF PYROPHOR...
Publication number
20240399272
Publication date
Dec 5, 2024
DANIELI & C. OFFICINE MECCANICHE SPA
Harald KOBLENZER
C21 - METALLURGY OF IRON
Information
Patent Application
ULTRA-HIGH STRENGTH SPRING STEEL AND PREPARATION METHOD THEREOF
Publication number
20240392404
Publication date
Nov 28, 2024
Shandong Jianzhu University
Simon Yisheng Feng
B22 - CASTING POWDER METALLURGY
Information
Patent Application
METHOD FOR REFINING MOLTEN IRON
Publication number
20240392400
Publication date
Nov 28, 2024
Industry-Academic Cooperation Foundation, Yonsei University
Gyo Khang PARK
C21 - METALLURGY OF IRON
Information
Patent Application
FURNACE SLAG AMOUNT ESTIMATION DEVICE, FURNACE SLAG AMOUNT ESTIMATI...
Publication number
20240393159
Publication date
Nov 28, 2024
JFE STEEL CORPORATION
Hiroto KASE
C21 - METALLURGY OF IRON
Information
Patent Application
METALLURGICAL MELTING FURNACE, AND METHOD FOR DETERMINING THE AMOUN...
Publication number
20240376560
Publication date
Nov 14, 2024
PROMECON process measurement control GmbH
Hans Georg CONRADS
C21 - METALLURGY OF IRON
Information
Patent Application
PRECIPITATION HARDENING MARTENSITIC STAINLESS STEEL HAVING EXCELLEN...
Publication number
20240376561
Publication date
Nov 14, 2024
Nippon Yakin Kogyo Co., Ltd.
Xin JI
B22 - CASTING POWDER METALLURGY
Information
Patent Application
MOLTEN PIG IRON MANUFACTURING METHOD
Publication number
20240368716
Publication date
Nov 7, 2024
NIPPON STEEL CORPORATION
Toshiya HARADA
C21 - METALLURGY OF IRON
Information
Patent Application
ALUMINUM ALLOY DEOXIDIZER WITH CARBON COMPOUNDS
Publication number
20240360527
Publication date
Oct 31, 2024
HF investment Co., LTD.
CHIEN-HAO LEE
C21 - METALLURGY OF IRON
Information
Patent Application
SYSTEM AND METHOD FOR INTEGRATED WATER TREATMENT AND COOLING IN THE...
Publication number
20240352548
Publication date
Oct 24, 2024
Saudi Arabian Oil Company
Faisal B. Almutairi
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Application
SYSTEMS AND APPARATUS FOR PRODUCTION OF HIGH-CARBON BIOGENIC REAGENTS
Publication number
20240343985
Publication date
Oct 17, 2024
Carbon Technology Holdings, LLC
James A. Mennell
C01 - INORGANIC CHEMISTRY
Information
Patent Application
METALLURGICAL FURNACE WITH CARBON INJECTING LANCE
Publication number
20240344156
Publication date
Oct 17, 2024
METIX (PROPRIETARY) LIMITED
Gabriel Jacobus LOTTER
C21 - METALLURGY OF IRON