C21D 1/10

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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 1/10: General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (furnaces in general F27; electric heating H05B) Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12258642 Method of induction-hardening a rolling-element bearing ringMar 13, 23Mar 25, 25Aktiebolaget SKF
12200846 High-frequency hardening apparatusJun 26, 20Jan 14, 25MITSUBISHI HEAVY INDUSTRIES, LTD.
12060926 Ball screw, method for manufacturing ball screw, power steering device, and method for manufacturing power steering deviceMar 03, 20Aug 13, 24Hitachi Astemo, Ltd.
12028956 Large scale metal formingMar 12, 19Jul 02, 24Illinois Tool Works Inc.
11807318 Track pad with uniform hardened regionNov 05, 20Nov 07, 23Caterpillar Inc.
11555225 Methods of manufacturing hypoid gearsApr 26, 19Jan 17, 23Ford Global Technologies, LLC
11512358 Quenching nozzle for induction hardening systemMar 09, 20Nov 29, 22Aktiebolaget SKF
11491546 Additive manufacturing methods using aluminum-rare earth alloys and products made using such methodsJul 09, 20Nov 08, 22UT - Battelle LLC; University of Tennessee Research Foundation; Iowa State University Research Foundation, Inc.; Eck Industries Incorporated;
11425799 Heating coilSep 13, 18Aug 23, 22Honda Motor Co. Ltd.; FUJI ELECTRONICS INDUSTRY CO., LTD.;
11414792 All-steel fittingMay 05, 15Aug 16, 22Groz-Beckert KG
11408043 Heat-processing device and heat-processing methodMar 01, 17Aug 09, 22NTN Corporation
11345982 Shaft partSep 20, 17May 31, 22501 Nippon Steel Corporation
11291086 Heating apparatus and heating methodJul 09, 15Mar 29, 22Neturen Co. Ltd.
11286535 Heat treatment equipment and heat treatment methodMay 26, 17Mar 29, 22NTN Corporation
11291087 Heating apparatus and heating methodFeb 25, 19Mar 29, 22Neturen Co. Ltd.
11162152 Bearing bushing for track, and method for producing the sameDec 20, 17Nov 02, 21Komatsu Ltd.
11065672 Process of manufacturing of segments for carbon thrust bearingMay 31, 18Jul 20, 21Not available
11028457 Method of heat treating a fastening memberJul 17, 17Jun 08, 21Caterpillar Inc.
10988837 Method for producing at least one component for a hydraulic displacement unitAug 21, 18Apr 27, 21Liebherr Machines Bulle SA
10961598 Apparatus for microtreatment of iron-based alloyJan 07, 19Mar 30, 21Not available

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2024/0327,943 MECHANICAL STRUCTURAL MEMBER AND PRODUCTION METHOD FOR SAMEApr 26, 23Oct 03, 24NSK STEERING & CONTROL, INC.
2024/0301,523 ULTRA-DEEP INDUCTION HARDENING FOR TRACK PADSMar 10, 23Sep 12, 24Caterpillar Inc.
2024/0254,610 Hot-Formed Steel Part and Manufacturing MethodJun 01, 22Aug 01, 24Not available
2024/0141,449 HEAT TREATMENT METHOD OF BEARING RINGOct 13, 23May 02, 24Not available
2021/0033,144 ADJUSTABLE SPACER WITH HARDENED ENDSOct 16, 20Feb 04, 21Temper Corporation
2019/0352,729 INDUCTION-HARDENING SYSTEM FOR INDUCTION HARDENING OF A LARGE ROLLING-ELEMENT BEARING RINGMay 06, 19Nov 21, 19Not available
2019/0316,220 BEARING BUSHING FOR TRACK, AND METHOD FOR PRODUCING THE SAMEDec 20, 17Oct 17, 19Komatsu Ltd.
2019/0309,382 AXLE FOR RAIL VEHICLESJul 04, 17Oct 10, 19Not available
2019/0241,986 HEAT TREATMENT METHOD OF ROD-SHAPE WORKPIECEMay 26, 17Aug 08, 19Not available
2019/0078,171 STEEL COMPONENT, GEAR COMPONENT, AND PRODUCING METHOD FOR STEEL COMPONENTMar 08, 17Mar 14, 19AISIN AW CO., LTD.; Nippon Steel & Sumitomo Metal Corporation;
2018/0320,737 METHOD FOR PRODUCING BEARING RING AND METHOD FOR PRODUCING DOUBLE ROW TAPERED ROLLER BEARINGOct 12, 16Nov 08, 18Not available
2017/0072,477 PARTIALLY HARDENED ROTARY TOOL AND CORRESPONDING PRODUCTION METHODSep 21, 16Mar 16, 17GÜHRING KG

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Patents Issued To Date - By Filing Year

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