C21D 1/18

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Description

Class  C21D : MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS


Subclass 1/18: General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (furnaces in general F27; electric heating H05B) Hardening (C21D 1/02 takes precedence); Quenching with or without subsequent tempering (quenching devices C21D 1/62)

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12264379 Steel wire rod having excellent spheroidizing heat treatment properties and method of manufacturing sameDec 20, 19Apr 01, 25POSCO
12258642 Method of induction-hardening a rolling-element bearing ringMar 13, 23Mar 25, 25Aktiebolaget SKF
12258647 Steel sheet, member, and methods for manufacturing the sameFeb 24, 21Mar 25, 25JFE Steel Corporation
12252757 Drill tool and method for producing sameJan 15, 20Mar 18, 25Furukawa Rock Drill Co., Ltd.
12246365 Combined casting and rolling installation and method for operating the combined casting and rolling installationSep 20, 21Mar 11, 25PRIMETALS TECHNOLOGIES AUSTRIA GMBH
12241139 Method for manufacturing an austenitic steel component and use of the componentNov 09, 16Mar 04, 25OUTOKUMPU OYJ
12240136 Razor blade and composition for a razor bladeJan 08, 20Mar 04, 25Edgewell Personal Care Brands, LLC
12234525 Martensitic stainless steel seamless pipe for oil country tubular goods, and method for manufacturing sameSep 25, 19Feb 25, 25JFE Steel Corporation
12234526 Steel plate for pressure vessel with excellent cryogenic toughness and excellent ductility and manufacturing method thereofOct 08, 19Feb 25, 25POSCO HOLDINGS INC.
12227817 SteelJan 19, 22Feb 18, 25501 Nippon Steel Corporation
12221663 Martensitic stainless steel seamless pipe for oil country tubular goods, and method for manufacturing sameApr 25, 19Feb 11, 25JFE Steel Corporation
12215404 Carbide-free tempered martensitic steels and preparation methods thereofDec 29, 23Feb 04, 25Beijing Institute of Technology
12202139 Material processing system and method for utilizing the sameDec 17, 20Jan 21, 25Edw. C. Levy Co.
12194522 Systems and methods for improving backward flow forming of shaftsOct 28, 21Jan 14, 25RTX CORPORATION
12188100 Systems and methods for automatic spray quenchingJan 09, 23Jan 07, 25HYDRO EXTRUSION USA, LLC
12180559 Bake-hardened hot-dip galvanized steel sheet with excellent powdering resistance, and manufacturing method thereforNov 03, 21Dec 31, 24POSCO CO., LTD.
12180593 High strength steel sheet, impact absorbing member, and method for manufacturing high strength steel sheetSep 25, 20Dec 31, 24JFE Steel Corporation
12179458 Cladding and method for manufacturing the sameJul 21, 21Dec 31, 24Asahi Kasei Kabushiki Kaisha
12168476 Pillar having variable strengthOct 29, 20Dec 17, 24Magna International Inc.
12169009 Friction brake body for a friction brake of a motor vehicle, method for producing a friction brakeMay 15, 20Dec 17, 24Robert Bosch GmbH; Buderus Guss Gmb;

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2025/0108,425 SYSTEMS AND METHODS FOR IMPROVING BACKWARD FLOW FORMING OF SHAFTSDec 12, 24Apr 03, 25RTX CORPORATION
2025/0109,467 HOT-ROLLED STEEL SHEETDec 22, 22Apr 03, 25501 Nippon Steel Corporation
2025/0101,554 ELECTRIC RESISTANCE WELDED STEEL PIPE FOR AN AUTOMOTIVE PART, AND METHOD OF PRODUCING AUTOMOTIVE PARTFeb 10, 22Mar 27, 25Not available
2025/0101,540 TIN PLATE AND MANUFACTURING METHOD THEREFORJul 26, 23Mar 27, 25INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD (CN); ZHANGJIAGANG YANGTZE RIVER COLD ROLLED PLATE CO. LTD; JIANGSU SHAGANG GROUP CO., LTD.;
2025/0092,483 NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAMENov 27, 24Mar 20, 25Not available
2025/0092,481 HIGH-STRENGTH STEEL AND METHOD OF MANUFACTURING THE SAMEJan 26, 24Mar 20, 25Not available
2025/0092,482 ULTRA-HIGH STRENGTH COLD-ROLLED STEEL SHEET AND MANUFACTURING METHOD THEREFORNov 26, 24Mar 20, 25Not available
2025/0091,651 PILLAR HAVING VARIABLE STRENGTHDec 02, 24Mar 20, 25Not available
2025/0084,500 LOW-CARBON, LOW-ALLOY AND HIGH-FORMABILITY DUAL-PHASE STEEL HAVING TENSILE STRENGTH OF GREATER THAN OR EQUAL TO 590 MPA, HOT-DIP GALVANIZED DUAL-PHASE STEEL, AND MANUFACTURING METHOD THEREFORMar 31, 22Mar 13, 25Baoshan Iron & Steel Co., Ltd.
2025/0084,518 HOT STAMPED BODYFeb 02, 23Mar 13, 25501 Nippon Steel Corporation
2025/0075,282 PRESS HARDENING STEEL (PHS) WELDED BLANKS WITH ENHANCED TOUGHNESSJul 30, 24Mar 06, 25Not available
2025/0075,286 ULTRA-HIGH STRENGTH GALVANIZED STEEL SHEET WITH EXCELLENT WELDABILITY AND MANUFACTURING METHOD THEREFORNov 19, 24Mar 06, 25Not available
2025/0075,301 SURFACE-TREATED TOOL STEEL FOR DIE CASTING OF METALJul 30, 24Mar 06, 25Not available
2025/0073,894 MATERIAL PROCESSING SYSTEM AND METHOD FOR UTILIZING THE SAMENov 20, 24Mar 06, 25Edw. C. Levy Co.
2025/0059,614 METHOD FOR PRODUCING STEEL MEMBERJan 17, 23Feb 20, 25AISIN CORPORATION
2025/0059,617 HEAVY PLATE AND THERMOMECHANICAL TREATMENT METHOD FOR A STARTING MATERIAL FOR THE PRODUCTION OF THE HEAVY PLATEDec 29, 22Feb 20, 25Not available
2025/0051,870 ULTRAHIGH-STRENGTH HOT-ROLLED STEEL SHEET HAVING EXCELLENT FORMABILITY AND MANUFACTURING METHOD THEREFORNov 22, 22Feb 13, 25POSCO CO., LTD
2025/0043,374 SEAWATER CORROSION-RESISTANT MARINE ENGINEERING STEEL AND PREPARATION METHOD THEREOFFeb 07, 24Feb 06, 25Wuhan University of Science and Technology; WUKE XINCAI (WUHAN) TECHNOLOGY CO., LTD.; WUKE COMPOSITE MATERIALS (HAIKOU) TECHNOLOGY CO., LTD.; SINO-ENERGY HUAYUAN FLOATING WIND INSTITUTE;
2025/0043,375 NI-FREE MICRO-ALLOYED HIGH-STRENGTH STEEL WITH ULTRA-LOW TEMPERATURE TOUGHNESS, AND PREPARATION METHOD THEREOFFeb 08, 24Feb 06, 25Wuhan University of Science and Technology; WUKE XINCAI (WUHAN) TECHNOLOGY CO., LTD.; WUKE COMPOSITE MATERIALS (HAIKOU) TECHNOLOGY CO., LTD.; SINO-ENERGY HUAYUAN FLOATING WIND INSTITUTE;
2025/0043,376 METHODS FOR MANUFACTURING WIRE ROD FOR COLD FORGING AND SCREW PART, HAVING EXCELLENT DRILLING CHARACTERISTICSDec 13, 22Feb 06, 25POSCO CO., LTD.

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