Membership
Tour
Register
Log in
Selection or treatment of the reducing gases
Follow
Industry
CPC
C21B13/0073
This industry / category may be too specific. Please go to a parent level for more data
Parent Industries
C
CHEMISTRY METALLURGY
C21
Iron metallurgy
C21B
MANUFACTURE OF IRON OR STEEL
C21B13/00
Making spongy iron or liquid steel, by direct processes
Current Industry
C21B13/0073
Selection or treatment of the reducing gases
Industries
Overview
Organizations
People
Information
Impact
Please log in for detailed analytics
Patents Grants
last 30 patents
Information
Patent Grant
Direct reduction system and related process
Patent number
12,365,955
Issue date
Jul 22, 2025
Danieli & C. Officine Meccaniche SpA
Massimiliano Zampa
C21 - METALLURGY OF IRON
Information
Patent Grant
Modular direct reduction systems and associated methods
Patent number
12,319,975
Issue date
Jun 3, 2025
Fluor Technologies Corporation
Jonathan M. Dailey
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for the direct reduction of iron ore
Patent number
12,286,679
Issue date
Apr 29, 2025
ThyssenKrupp Steel Europe AG
Matthias Weinberg
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for the smelting of a metalliferous feedstock material
Patent number
12,241,133
Issue date
Mar 4, 2025
African Rainbow Minerals Limited
Petrus Hendrik Ferreira Bouwer
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and device for producing direct reduced metal
Patent number
12,227,820
Issue date
Feb 18, 2025
GREENIRON H2 AB
Hans Murray
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and device for producing direct reduced, carburized metal
Patent number
12,221,659
Issue date
Feb 11, 2025
GREENIRON H2 AB
Hans E. H. Murray
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Process and apparatus for direct reduction with electrically heated...
Patent number
12,209,293
Issue date
Jan 28, 2025
PRIMETALS TECHNOLOGIES AUSTRIA GMBH
Franz Hauzenberger
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and device for producing direct reduced metal
Patent number
12,209,295
Issue date
Jan 28, 2025
GREENIRON H2 AB
Hans Murray
C21 - METALLURGY OF IRON
Information
Patent Grant
Inductive bath plasma cupola
Patent number
12,209,513
Issue date
Jan 28, 2025
Heat IP Holdco, LLC
James Charles Juranitch
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Cost effective plasma combined heat and power system
Patent number
12,196,111
Issue date
Jan 14, 2025
Heat IP Holdco, LLC
James Charles Juranitch
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for carburization of HDRI produced in H2 based direct reduct...
Patent number
12,180,554
Issue date
Dec 31, 2024
PRIMETALS TECHNOLOGIES AUSTRIA GMBH
Christian Boehm
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Systems and methods for producing syngas from bio-oil
Patent number
12,180,074
Issue date
Dec 31, 2024
Charm Industrial, Inc.
Peter Reinhardt
C21 - METALLURGY OF IRON
Information
Patent Grant
Hydrogen reduction of iron ore concentrate in loose layers and comp...
Patent number
12,163,198
Issue date
Dec 10, 2024
University of Utah Research Foundation
Hong Yong R. Sohn
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and device for producing direct reduced metal
Patent number
12,104,222
Issue date
Oct 1, 2024
GREENIRON H2 AB
Hans Murray
C21 - METALLURGY OF IRON
Information
Patent Grant
Methods and systems for increasing the carbon content of direct red...
Patent number
12,084,730
Issue date
Sep 10, 2024
Midrex Technologies, Inc.
Keith Marshall Bastow-Cox
C21 - METALLURGY OF IRON
Information
Patent Grant
Device for manufacturing molten iron
Patent number
12,084,731
Issue date
Sep 10, 2024
POSCO Co., Ltd
Chang Kuk Ko
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Direct reduced iron system and method
Patent number
12,060,622
Issue date
Aug 13, 2024
Nucor Corporation
Brad True
C21 - METALLURGY OF IRON
Information
Patent Grant
Direct reduction process utilizing hydrogen
Patent number
11,952,638
Issue date
Apr 9, 2024
Midrex Technologies, Inc.
Keith Marshall Bastow-Cox
C21 - METALLURGY OF IRON
Information
Patent Grant
High-efficiency photonic furnaces for metal production
Patent number
11,898,798
Issue date
Feb 13, 2024
LIMELIGHT STEEL INC.
Olivia Faye Dippo
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
High-efficiency photonic furnaces for metal production
Patent number
11,852,412
Issue date
Dec 26, 2023
LIMELIGHT STEEL INC.
Olivia Faye Dippo
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Systems and methods for steel production
Patent number
11,788,158
Issue date
Oct 17, 2023
PATHFINDER HOLDINGS CORP.
James Maurice Small
C21 - METALLURGY OF IRON
Information
Patent Grant
Integration of DR plant and electric DRI melting furnace for produc...
Patent number
11,788,159
Issue date
Oct 17, 2023
Midrex Technologies, Inc.
Todd Michael Astoria
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for direct reduction using vent gas
Patent number
11,773,459
Issue date
Oct 3, 2023
PRIMETALS TECHNOLOGIES AUSTRIA GMBH
Robert Millner
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and device for direct reduction with dry vent gas de-dusting
Patent number
11,697,855
Issue date
Jul 11, 2023
PRIMETALS TECHNOLOGIES AUSTRIA GMBH
Thomas Eder
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for direct reduction in a fluidized bed
Patent number
11,685,961
Issue date
Jun 27, 2023
PRIMETALS TECHNOLOGIES AUSTRIA GMBH
Roland Eisl
C21 - METALLURGY OF IRON
Information
Patent Grant
Direct reduction process utilizing hydrogen
Patent number
11,499,201
Issue date
Nov 15, 2022
Midrex Technologies, Inc.
Todd Michael Astoria
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Method and apparatus for producing direct reduced iron utilizing a...
Patent number
11,203,791
Issue date
Dec 21, 2021
Danieli & C. Officine Meccaniche SpA
Michele Condosta
C21 - METALLURGY OF IRON
Information
Patent Grant
Methods and systems for syngas production and for efficient, flexib...
Patent number
11,142,832
Issue date
Oct 12, 2021
Battelle Energy Alliance, LLC
James E. O'Brien
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Reduction gas extraction from saturated top gas
Patent number
11,078,549
Issue date
Aug 3, 2021
PRIMETALS TECHNOLOGIES AUSTRIA GMBH
Andreas Steinwandter
C21 - METALLURGY OF IRON
Information
Patent Grant
Inductive bath plasma cupola
Patent number
11,073,049
Issue date
Jul 27, 2021
Plasma Tech Holdings, LLC
James Charles Juranitch
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Patents Applications
last 30 patents
Information
Patent Application
ARRANGEMENT AND PROCESS FOR CHARGING IRON ORE TO, AND/OR DISCHARGIN...
Publication number
20250230512
Publication date
Jul 17, 2025
HYBRIT Development AB
Mikael Lindvall
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD FOR PRODUCING STEEL AND SPONGE IRON MANUFACTURING PROCESS
Publication number
20250223660
Publication date
Jul 10, 2025
LUOSSAVAARA-KIIRUNAVAARA AB
Ola Eriksson
C21 - METALLURGY OF IRON
Information
Patent Application
SYSTEM FOR CARBON DIOXIDE CAPTURE AND CARBON RECYCLING FOR STEEL MILL
Publication number
20250214026
Publication date
Jul 3, 2025
LOWCARBON CO., LTD.
Cheol LEE
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD AND SYSTEM FOR REMOVING CARBON DEPOSIT AT ELECTRIC HEATING S...
Publication number
20250197956
Publication date
Jun 19, 2025
MIDREX TECHNOLOGIES, INC.
Haruyasu Michishita
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD OF REDUCING IRON ORE POWDER
Publication number
20250163525
Publication date
May 22, 2025
JFE STEEL CORPORATION
Yoshiko NAKAHARA
C21 - METALLURGY OF IRON
Information
Patent Application
METHODS AND SYSTEMS TO PRODUCE HIGH QUALITY SYNGAS FOR THE PRODUCTI...
Publication number
20250162864
Publication date
May 22, 2025
MIDREX TECHNOLOGIES, INC.
Gregory Darel Hughes
C01 - INORGANIC CHEMISTRY
Information
Patent Application
ELECTRIC GAS HEATING SYSTEM AND METHOD IN A DIRECT REDUCTION PLANT...
Publication number
20250163526
Publication date
May 22, 2025
MIDREX TECHNOLOGIES, INC.
Haruyasu Michishita
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD FOR THE PRODUCTION OF SPONGE IRON FROM IRON ORE
Publication number
20250154615
Publication date
May 15, 2025
HYBRIT Development AB
Henrik Von Schenck
C21 - METALLURGY OF IRON
Information
Patent Application
IMPURITY REMOVAL IN AN IRON CONVERSION SYSTEM
Publication number
20250109516
Publication date
Apr 3, 2025
ELECTRASTEEL, INC.
Ai Quoc PHAM
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
METHOD AND DEVICE FOR PRODUCING DIRECT REDUCED METAL
Publication number
20250109450
Publication date
Apr 3, 2025
GREENIRON H2 AB
Hans MURRAY
C21 - METALLURGY OF IRON
Information
Patent Application
GAS COMPRESSION IN HYDROGEN-BASED DIRECT REDUCTION
Publication number
20250092478
Publication date
Mar 20, 2025
PRIMETALS TECHNOLOGIES AUSTRIA GMBH
Robert MILLNER
C21 - METALLURGY OF IRON
Information
Patent Application
SYSTEMS AND METHODS FOR PRODUCING SYNGAS FROM BIO-OIL
Publication number
20250091863
Publication date
Mar 20, 2025
Charm Industrial, Inc.
Peter Reinhardt
C21 - METALLURGY OF IRON
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
METHOD FOR PRODUCING SPONGE IRON
Publication number
20250092479
Publication date
Mar 20, 2025
CHINA UNIVERSITY OF PETROLEUM-BEIJING
Hongjun ZHOU
C21 - METALLURGY OF IRON
Information
Patent Application
REDUCTION OF IRON ORE METAL AND REACTOR FOR SAID REDUCTION
Publication number
20250051865
Publication date
Feb 13, 2025
LUOSSAVAARA-KIIRUNAVAARA AB
Shabbir Taherbhai LAKDAWALA
C21 - METALLURGY OF IRON
Information
Patent Application
A METHOD FOR PRODUCING IRON FUEL
Publication number
20250051866
Publication date
Feb 13, 2025
RENEWABLE IRON FUEL TECHNOLOGY B.V.
Lex SCHEEPERS
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
System for Direct Reduction of Iron Ore to Sponge Iron
Publication number
20250027179
Publication date
Jan 23, 2025
HYBRIT Development AB
Tommy Ruona
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD FOR PRODUCING DIRECT REDUCTION IRON
Publication number
20240410027
Publication date
Dec 12, 2024
NIPPON STEEL CORPORATION
Moritoshi MIZUTANI
C21 - METALLURGY OF IRON
Information
Patent Application
DIRECT REDUCED IRON SYSTEM AND METHOD
Publication number
20240401160
Publication date
Dec 5, 2024
Nucor Corporation
Brad True
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
METHOD FOR OPERATING A BLAST FURNACE PLANT
Publication number
20240400384
Publication date
Dec 5, 2024
PAUL WURTH S.A.
Klaus Peter KINZEL
C01 - INORGANIC CHEMISTRY
Information
Patent Application
METHOD FOR REFINING MOLTEN IRON
Publication number
20240392398
Publication date
Nov 28, 2024
Industry-Academic Cooperation Foundation, Yonsei University
Gyo Khang PARK
C21 - METALLURGY OF IRON
Information
Patent Application
INDUCTION HEATING OF DRI
Publication number
20240392399
Publication date
Nov 28, 2024
Christopher HARRIS
C21 - METALLURGY OF IRON
Information
Patent Application
IRONMAKING METHOD
Publication number
20240384364
Publication date
Nov 21, 2024
NIPPON STEEL CORPORATION
Moritoshi MIZUTANI
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD FOR PRODUCING SLAG HAVING A DESIRED QUALITY
Publication number
20240376559
Publication date
Nov 14, 2024
ThyssenKrupp Steel Europe AG
Thomas BAUR
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD FOR OPERATING A METALLURGICAL PLANT FOR PRODUCING IRON PRODUCTS
Publication number
20240360526
Publication date
Oct 31, 2024
PAUL WURTH S.A.
Cristiano CASTAGNOLA
C21 - METALLURGY OF IRON
Information
Patent Application
IRON-CONTAINING POWDER DIRECT STEELMAKING DEVICE IN REDUCING ATMOSP...
Publication number
20240352547
Publication date
Oct 24, 2024
Xiao ZHAO
C21 - METALLURGY OF IRON
Information
Patent Application
PROCESSES AND METHODS FOR THE PRODUCTION OF IRON AND STEEL
Publication number
20240327937
Publication date
Oct 3, 2024
Calix Ltd.
Mark SCEATS
C21 - METALLURGY OF IRON
Information
Patent Application
SUSTAINABLE STEEL PRODUCTION WITH CO-GENERATION OF HYDROGEN
Publication number
20240327939
Publication date
Oct 3, 2024
Saudi Arabian Oil Company
Faisal B. Almutairi
C21 - METALLURGY OF IRON