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 1/06: General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (furnaces in general F27; electric heating H05B) Surface hardening
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12181012 | Damper spring | Oct 15, 20 | Dec 31, 24 | 501 Nippon Steel Corporation; AISIN CORPORATION; NHK Spring Co. LTD; NIPPON STEEL SG WIRE CO., LTD.; |
| 12163555 | Bearing part and rolling bearing | Dec 05, 18 | Dec 10, 24 | NTN Corporation |
| 12129556 | Chemical activation of self-passivating metals | Dec 04, 20 | Oct 29, 24 | Swagelok Company |
| 12129558 | Soft magnetic material and method for producing the same, and electric motor containing soft magnetic material | Sep 11, 19 | Oct 29, 24 | Hitachi Ltd. |
| 12098744 | Guiding member, mechanical system comprising such a guiding member, and method for producing such a guiding member | May 15, 20 | Sep 24, 24 | Centre Stephanois de Recherches Mecaniques Hydromecanique et Frottement |
| 12091734 | Steel wire and spring | Apr 07, 20 | Sep 17, 24 | Sumitomo Electric Industries, Ltd. |
| 12060632 | Ferritic stainless steel sheet | Nov 17, 20 | Aug 13, 24 | NIPPON STEEL Stainless Steel Corporation |
| 12007003 | Method for producing a threaded nut of a threaded drive, in particular a ball screw nut of a ball screw drive | Jun 25, 20 | Jun 11, 24 | Schaeffler Technologies AG & Co. KG |
| 11993840 | Asynchronous conversion of metals to metal ceramics | Jun 17, 21 | May 28, 24 | Intalus, Inc. |
| 11959177 | Steel for nitrocarburizing and nitrocarburized component, and methods of producing same | Dec 01, 20 | Apr 16, 24 | JFE Steel Corporation |
| 11898213 | Method of treating a mining insert | Dec 18, 20 | Feb 13, 24 | AB Sandvik Coromant; Sandvik Mining and Construction Tools AB; |
| 11898214 | Method and system for heat treating a workpiece | Feb 26, 21 | Feb 13, 24 | ETXE-TAR, S.A. |
| 11840765 | Nitriding process for carburizing ferrium steels | Oct 25, 21 | Dec 12, 23 | GE AVIO S.r.l. |
| 11827963 | Roughly-shaped steel material for nitrided part, and nitrided part | Oct 29, 19 | Nov 28, 23 | 501 Nippon Steel Corporation |
| 11767569 | Precipitation hardening stainless steel and its manufacture | May 31, 17 | Sep 26, 23 | OVAKO SWEDEN AB |
| 11732655 | High-efficiency epicyclic gear assemblies for turbomachines and method of manufacturing thereof | Jan 21, 22 | Aug 22, 23 | GE Avio S.r.l. |
| 11701699 | Helicoidal blade manufacturing system and method | Jul 29, 20 | Jul 18, 23 | Not available |
| 11702716 | Case hardening steel | Jan 25, 16 | Jul 18, 23 | JFE Steel Corporation |
| 11668000 | Method of treating an article | Mar 11, 22 | Jun 06, 23 | FLUID CONTROLS PVT. LTD. |
| 11667999 | Carbo-nitriding process for martensitic stainless steel and stainless steel article having improved corrosion resistance | Jul 19, 18 | Jun 06, 23 | UES INC.; MIDWEST THERMAL-VAC INC.; Aktiebolaget SKF; |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0027,190 | CHEMICAL ACTIVATION OF SELF-PASSIVATING METALS | Sep 25, 24 | Jan 23, 25 | Not available |
| 2024/0352,562 | CASE HARDENING STEEL FOR WARM FORGING AND ROUGHLY-SHAPED FORGED MATERIAL MANUFACTURED USING THE SAME | Sep 29, 21 | Oct 24, 24 | AICHI STEEL CORPORATION |
| 2024/0157,204 | Mechanical and Chemical Surface Treatment of a Golf Club Head | Nov 10, 23 | May 16, 24 | Not available |
| 2024/0011,142 | PROCESSING METHOD AND PROCESSING APPARATUS FOR METAL COMPONENT | Nov 16, 21 | Jan 11, 24 | Not available |
| 2023/0212,731 | STEEL COMPONENT | May 17, 21 | Jul 06, 23 | JFE Steel Corporation |
| 2023/0036,990 | METHOD OF TREATING A MINING INSERT | Dec 18, 20 | Feb 02, 23 | Not available |
| 2022/0252,348 | HEAT TREATMENT MEMBER AND HEAT TREATMENT STRUCTURE | Feb 25, 21 | Aug 11, 22 | Not available |
| 2020/0087,743 | SURFACE HARDENING OF SUBSTRATES BY A PARTICLE-CONTAINING CAVITATING WATERJET | Mar 21, 18 | Mar 19, 20 | Not available |
| 2019/0352,728 | Method For Railway Rolling Stock Unit Center Plate Strengthening And A Device to Perform It | May 16, 19 | Nov 21, 19 | Rail 1520 IP Ltd. |
| 2019/0284,653 | Surface Treatment Process | May 17, 17 | Sep 19, 19 | Commonwealth Steel Company Pty Ltd |
| 2019/0127,815 | A PRECIPITATION HARDENING STEEL AND ITS MANUFACTURE | May 31, 17 | May 02, 19 | Not available |
| 2018/0320,256 | High Strength Precipitation Hardenable Stainless Steel | Jul 12, 18 | Nov 08, 18 | Not available |
| 2017/0314,088 | ZINC-COATED HOT FORMED STEEL COMPONENT WITH TAILORED PROPERTY | Apr 28, 16 | Nov 02, 17 | GM GLOBAL TECHNOLOGY OPERATIONS LLC |
| 2017/0081,738 | METHOD & METAL COMPONENT | Jun 05, 15 | Mar 23, 17 | AKTIEBOLAGET SKF |
| 2016/0333,432 | CASE HARDENING STEEL AND CARBURIZED COMPONENT OBTAINED THEREFROM | Jan 23, 15 | Nov 17, 16 | DAIDO STEEL CO., LTD. |
| 2016/0312,854 | CVT RING MEMBER AND METHOD FOR MANUFACTURING THE SAME | Dec 09, 14 | Oct 27, 16 | AICHI STEEL CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, |
| 2016/0237,515 | HOT-ROLLED STEEL SHEET HAVING EXCELLENT SURFACE HARDNESS AFTER CARBURIZING HEAT TREATMENT AND EXCELLENT COLD WORKABILITY | Oct 17, 14 | Aug 18, 16 | KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.) |
| 2016/0002,745 | HOT-ROLLED STEEL SHEET HAVING EXCELLENT DRAWABILITY AND POST-PROCESSING SURFACE HARDNESS | Mar 03, 14 | Jan 07, 16 | KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.) |
| 2016/0003,300 | BEARING PART AND ROLLING BEARING | Feb 03, 14 | Jan 07, 16 | NTN CORPORATION |
| 2015/0376,764 | PROCESS FOR MANUFACTURING A FIXING DEVICE | Nov 01, 13 | Dec 31, 15 | Not available |
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