C21D 1/22

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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 1/22: 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) by interrupted quenching Martempering

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12091726 Hot-press molding method and hot-press molded productJul 19, 21Sep 17, 24501 Toyota Jidosha Kabushiki Kaisha
12084738 Method for producing a steel sheet having improved strength, ductility and formabilityDec 21, 16Sep 10, 24Arcelormittal Commercial RPS S.A.R.L.
12043876 Steel sheet and method for producing the sameOct 16, 19Jul 23, 24JFE Steel Corporation
11993823 High strength annealed steel products and annealing processes for making the sameAug 19, 19May 28, 24United States Steel Corporation
11692232 High strength precipitation hardening stainless steel alloy and article made therefromNov 25, 19Jul 04, 23Not available
11512362 Method for producing an ultra high strength galvannealed steel sheet and obtained galvannealed steel sheetNov 02, 20Nov 29, 22Arcelormittal Commercial RPS S.A.R.L.
11491581 Press hardened steel with tailored propertiesNov 02, 18Nov 08, 22Cleveland-Cliffs Steel Properties Inc.
11473164 High-strength cold-rolled steel sheet and manufacturing method thereforMar 19, 19Oct 18, 22501 Nippon Steel Corporation
11466339 Method of producing press-hardened and coated steel parts at a high productivity rateApr 23, 20Oct 11, 22Arcelormittal Commercial RPS S.A.R.L.
11377704 High performance material for coiled tubing applications and the method of producing the sameAug 12, 19Jul 05, 22Tenaris Coiled Tubes, LLC
11268162 High strength annealed steel productsAug 31, 18Mar 08, 22United States Steel Corporation
11242583 Steel sheetNov 08, 18Feb 08, 22501 Nippon Steel Corporation
11230746 Heat treatment method and heat treatment apparatusJan 25, 17Jan 25, 22Schwartz GmbH
11230743 Method of manufacturing a tubular product and tubular productFeb 18, 20Jan 25, 22BENTELER STEEL/TUBE GMBH
11141778 Steel for molds and molding toolSep 05, 16Oct 12, 21Daido Steel Co. LTD
11118242 Hot-press molding method and hot-press molded productNov 09, 17Sep 14, 21501 Toyota Jidosha Kabushiki Kaisha
11041225 Heat-treated steel sheet member and method for producing the sameApr 07, 16Jun 22, 21501 Nippon Steel Corporation
11035020 Galvannealed steel sheetDec 29, 15Jun 15, 21Arcelormittal Commercial RPS S.A.R.L.
10961611 High-strength steel with yield strength of 800 MPa and production method thereforDec 08, 15Mar 30, 21Baoshan Iron & Steel Co., Ltd.
10669607 Method of producing press-hardened and coated steel parts at a high productivity rateFeb 13, 15Jun 02, 20Arcelormittal Commercial RPS S.A.R.L.

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2024/0360,528 QUENCHING APPARATUS, QUENCHING METHOD, AND METHOD OF MANUFACTURING METAL SHEETJul 29, 22Oct 31, 24JFE Steel Corporation
2024/0263,265 HIGH STRENGTH STEEL PRODUCTS AND ANNEALING PROCESSES FOR MAKING THE SAMEApr 19, 24Aug 08, 24Not available
2024/0229,201 STEEL SHEET, MEMBER, AND METHOD FOR PRODUCING THEMJun 30, 21Jul 11, 24JFE Steel Corporation
2024/0218,475 METHOD FOR MANUFACTURING A HIGH STRENGTH STEEL PLATE AND HIGH STRENGTH STEEL PLATEMay 19, 22Jul 04, 24Not available
2024/0167,134 STEEL ALLOY AND METHOD OF MANUFACTURE EXHIBITING ENHANCED COMBINATION OF HIGH TEMPERATURE STRENGTH, OXIDATION RESISTANCE, AND THERMAL CONDUCTIVITYJun 17, 21May 23, 24Not available
2024/0124,950 METHOD FOR HEAT TREATING A STEEL COMPONENTOct 10, 23Apr 18, 24Not available
2015/0368,729 METHOD FOR THE PRODUCTION OF HIGH-WEAR-RESISTANCE MARTENSITIC CAST STEEL AND STEEL WITH SAID CHARACTERISTICSJul 31, 13Dec 24, 15COMPAÑÍA ELECTRO METALÚRGICA S.A., COMPAÑÍA ELECTRO METALÚRGICA S.A.,

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