C21D 1/20

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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 1/20: 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 Isothermal quenching, e.g. bainitic hardening

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12123069 Steel sheet and method for producing the sameOct 16, 19Oct 22, 24JFE Steel Corporation
12110570 Cold rolled, coated and post batch annealed steel sheetApr 18, 23Oct 08, 24Arcelormittal Commercial RPS S.A.R.L.
12054816 Automotive steel and a method for the fabrication of the sameJan 05, 18Aug 06, 24The University of Hong Kong
12024761 Component for contacting hydrogenDec 05, 18Jul 02, 24502 Robert Bosch GmbH
11993823 High strength annealed steel products and annealing processes for making the sameAug 19, 19May 28, 24United States Steel Corporation
11959177 Steel for nitrocarburizing and nitrocarburized component, and methods of producing sameDec 01, 20Apr 16, 24JFE Steel Corporation
11661637 Method for forming a cold rolled, coated and post batch annealed steel sheetOct 29, 20May 30, 23Arcelormittal Commercial RPS S.A.R.L.
11578381 Production method for high-strength steel sheetSep 17, 21Feb 14, 23JFE Steel Corporation
11555233 Thick steel plate for structural pipes or tubes, method of producing thick steel plate for structural pipes or tubes, and structural pipes and tubesMar 25, 16Jan 17, 23JFE Steel Corporation
11421290 Extremely high conductivity low cost steelApr 21, 20Aug 23, 22INNOMAQ 21, SOCIEDAD LIMITADA
11408049 Cold rolled steel wire, method and reinforcement of flexible conduitsOct 08, 19Aug 09, 22ARCELORMITTAL WIRE FRANCE
11401595 High-strength steel sheet and production method thereforAug 29, 17Aug 02, 22JFE Steel Corporation
11345983 Bainitic steel of high strength and high elongation and method to manufacture said bainitic steelMay 28, 12May 31, 22TATA STEEL LIMITED
11345972 High-strength hot-rolled steel sheet and method for manufacturing the sameFeb 17, 15May 31, 22JFE Steel Corporation
11331710 Method for producing a motor vehicle component with at least two regions of different strengthsFeb 23, 17May 17, 22Benteler Automobiltechnik GmbH
11319607 High-strength high-tenacity steel plate with tensile strength of 800 MPa and production method thereforNov 24, 15May 03, 22Baoshan Iron & Steel Co., Ltd.
11268162 High strength annealed steel productsAug 31, 18Mar 08, 22United States Steel Corporation
11085097 Self-lubricating rolling bearing and preparation method thereforAug 31, 17Aug 10, 21XI'AN UNIVERSITY OF TECHNOLOGY
10941460 Plated steel plate and manufacturing method thereofJan 14, 16Mar 09, 21HYUNDAI STEEL COMPANY
10920296 Alloy steel composition and producing method thereofMay 24, 17Feb 16, 21ASUSTek Computer Inc.

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2025/0003,020 FIRMWARE-BASED OUT-OF-ORDER COMMAND SCHEDULERJun 27, 23Jan 02, 25BAE Systems Information and Electronic Systems Integration Inc.
2024/0318,690 COMPONENT FOR A ROLLING BEARING AND CORRESPONDING METHOD FOR PRODUCING THE COMPONENTJul 23, 21Sep 26, 24Not available
2024/0279,762 METHOD FOR PRODUCING A ROLLING ELEMENT BEARING COMPONENT, ROLLING ELEMENT BEARING COMPONENT, AND ROLLING ELEMENT BEARINGMay 10, 22Aug 22, 24Schaeffler Technologies AG & Co. KG
2024/0263,265 HIGH STRENGTH STEEL PRODUCTS AND ANNEALING PROCESSES FOR MAKING THE SAMEApr 19, 24Aug 08, 24Not available
2024/0254,610 Hot-Formed Steel Part and Manufacturing MethodJun 01, 22Aug 01, 24Not available
2024/0183,010 WIREDRAWN PRODUCT AND METHOD FOR MANUFACTURING WIREDRAWN PRODUCTApr 14, 22Jun 06, 24Not available
2024/0124,950 METHOD FOR HEAT TREATING A STEEL COMPONENTOct 10, 23Apr 18, 24Not available
2024/0093,321 METHODS AND SYSTEMS FOR VACUUM AND OIL AUSTEMPERING IN PRODUCING BAINITEAug 03, 23Mar 21, 24Not available
2020/0291,496 EXTREMELY HIGH CONDUCTIVITY LOW COST STEELApr 21, 20Sep 17, 20INNOMAQ 21, SOCIEDAD LIMITADA
2019/0241,988 HOT-PRESSING STEEL PLATE, PRESS-MOLDED ARTICLE, AND METHOD FOR MANUFACTURING PRESS-MOLDED ARTICLEApr 17, 19Aug 08, 19Kabushiki Kaisha Kobe Seiko Sho ( Kobe Steel Ltd)
2018/0327,874 GAS QUENCHING METHODNov 11, 15Nov 15, 18NISSAN MOTOR CO., LTD.
2018/0327,873 Engineering Steel with a Bainitic Structure, Forged Parts Produced Therefrom and Method for Producing a Forged PartNov 15, 16Nov 15, 18Not available
2018/0258,504 METHOD OF PRODUCING A TOOL STEELAug 03, 16Sep 13, 18Not available
2017/0283,899 CARBURIZING AUSTEMPERING PROCESSJan 04, 17Oct 05, 17GM GLOBAL TECHNOLOGY OPERATIONS LLC
2017/0233,841 Material, Method & ComponentJul 17, 15Aug 17, 17Ausferritic AB
2017/0096,719 EXTREMELY HIGH CONDUCTIVITY LOW COST STEELMar 18, 15Apr 06, 17INNOMAQ 21, SOCIEDAD LIMITADA
2017/0044,643 METHOD AND APPARATUS FOR PRODUCING A STEEL STRIPApr 15, 15Feb 16, 17Voestalpine Precision Strip GmbH
2016/0222,485 HOT-PRESSING STEEL PLATE, PRESS-MOLDED ARTICLE, AND METHOD FOR MANUFACTURING PRESS-MOLDED ARTICLESep 10, 13Aug 04, 16KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)

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