C21B 5/06

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Class  C21B : MANUFACTURE OF IRON OR STEEL


Subclass 5/06: Making pig-iron in the blast furnace using top gas in the blast furnace process (in coke ovens C10B)

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
11591662 Method for operating a metallurgical furnaceMay 13, 20Feb 28, 23Paul Wurth SA
11572597 P process of making pig iron in a blast furnace using pellets containing thermoplastic and cellulosic materialsJun 19, 18Feb 07, 23SUBCOAL INTERNATIONAL B.V.
11403747 Fine ratio measuring device and fine ratio measuring systemNov 29, 17Aug 02, 22JFE Steel Corporation
11377700 Method for operating an iron- or steelmaking- plantJul 02, 18Jul 05, 22L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
10961596 Method for supplying hydrogen-containing reducing gas to shaft part of blast furnaceFeb 05, 16Mar 30, 21501 Nippon Steel Corporation; JFE Steel Corporation; Kobe Steel Ltd.; Nisshin Steel Co. Ltd.; NIPPON STEEL ENGINEERING CO., LTD;
10781498 Combined system for producing steel and method for operating the combined systemDec 11, 14Sep 22, 20THYSSENKRUPP AG
10697031 Combined system for producing steel and method for operating the combined systemDec 11, 14Jun 30, 20THYSSENKRUPP AG
10697030 Plant combination for producing steel and method for operating the plant combinationDec 11, 14Jun 30, 20THYSSENKRUPP AG
10697032 Method for generating synthesis gas in conjunction with a smelting worksDec 11, 14Jun 30, 20THYSSENKRUPP AG
10626750 Top-pressure recovery turbine deposition controlDec 08, 17Apr 21, 20ECOLAB USA INC.
10604816 Combined system for producing steel and method for operating the combined systemDec 11, 14Mar 31, 20THYSSENKRUPP AG
10526670 Blast furnace and method for operating a blast furnaceDec 01, 15Jan 07, 20CCP TECHNOLOGY GMBH
10519102 for a urea synthesis processDec 11, 14Dec 31, 19THYSSENKRUPP AG
10287643 Blast furnace and method for operating a blast furnaceNov 27, 14May 14, 19CCP TECHNOLOGY GMBH
10155195 Monitoring system for annular scrubbersSep 24, 15Dec 18, 18PRIMETALS TECHNOLOGIES AUSTRIA GMBH
10106863 Method for operation of blast furnaceJan 06, 15Oct 23, 18Nippon Steel & Sumitomo Metal Corporation; JFE Steel Corporation; Kobe Steel Ltd.; Nisshin Steel Co. Ltd.; NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD.;
10072312 Method for operating a top gas recycling blast furnace installationNov 27, 14Sep 11, 18L'Air Liquide - Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
10054366 Process for operating a blast furnace installation with top gas recyclingDec 20, 11Aug 21, 18L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
9868998 Method and apparatus for supplying blast to a blast furnaceDec 10, 13Jan 16, 18PRIMETALS TECHNOLOGIES, LIMITED
9868999 Methods and systems for producing direct reduced iron utilizing a petroleum refinery bottoms or petroleum coke gasifier and a hot gas cleanerJul 14, 15Jan 16, 18MIDREX TECHNOLOGIES, INC.

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2025/0034,669 Steelmaking method and associated network of plantsDec 16, 21Jan 30, 25Not available
2025/0034,668 Steelmaking method and associated network of plantsDec 07, 22Jan 30, 25Not available
2025/0027,176 Injection Regulation and Control Device and Method for Blast Furnace Low-Carbon SmeltingDec 04, 22Jan 23, 25Not available
2025/0019,782 Steelmaking method and associated network of plantsDec 16, 21Jan 16, 25Not available
2024/0375,962 Method and System for Treating CO2Sep 20, 22Nov 14, 24Not available
2024/0360,526 METHOD FOR OPERATING A METALLURGICAL PLANT FOR PRODUCING IRON PRODUCTSAug 26, 22Oct 31, 24Not available
2024/0279,756 PROCESS UTILIZING SYNTHESIS GAS FOR IMPROVING THE ENVIRONMENTAL IMPACT OF THE REDUCTION OF IRON ORE IN BLAST FURNACESMay 02, 22Aug 22, 24Not available
2024/0263,258 METHOD FOR OPERATING A BLAST FURNACE INSTALLATIONJun 02, 22Aug 08, 24Not available
2024/0229,171 Manufacturing method of a steel productFeb 26, 21Jul 11, 24Not available
2024/0229,174 Method of manufacturing steelFeb 23, 22Jul 11, 24Not available
2024/0229,175 A method of manufacturing of a steel product in several steelmaking unitsFeb 23, 22Jul 11, 24Not available
2024/0132,981 Manufacturing method of a steel productFeb 26, 21Apr 25, 24Not available
2024/0132,983 Method of manufacturing steelFeb 23, 22Apr 25, 24Not available
2024/0132,984 A method of manufacturing of a steel product in several steelmaking unitsFeb 23, 22Apr 25, 24Not available
2024/0018,614 METHOD FOR OPERATING A BLAST FURNACE INSTALLATIONSep 09, 21Jan 18, 24Not available
2023/0366,047 Blast furnace for ironmaking productionSep 15, 20Nov 16, 23Not available
2023/0340,628 METHOD FOR OPERATING A BLAST FURNACE INSTALLATIONSep 09, 21Oct 26, 23Not available
2023/0243,004 A DIRECT REDUCTION SYSTEM AND RELATIVE PROCESSJun 28, 21Aug 03, 23Not available
2023/0175,084 STEELMAKING LINE AND METHOD OF PRODUCING REDUCED IRONJan 06, 21Jun 08, 23JFE Steel Corporation
2022/0307,096 SYSTEM AND METHOD FOR PRODUCING STEELAug 04, 20Sep 29, 22SEKISUI CHEMICAL CO., LTD.

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