C21D 1/28

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9869009 High strength low alloy steel and method of manufacturingNov 14, 14Jan 16, 18Not available
9822423 Method for producing silicon steel normalizing substrateMar 26, 12Nov 21, 17BAOSHAN IRON & STEEL CO., LTD.
9771639 High-strength and high-toughness steel plate with yield strength of 700 MPa and method of manufacturing the sameMay 25, 12Sep 26, 17BAOSHAN IRON & STEEL CO., LTD.
9738946 Method for producing silicon steel normalizing substrateMar 27, 12Aug 22, 17BAOSHAN IRON & STEEL CO., LTD., BAOSHAN IRON & STEEL COL, LTD.,
9616486 Process for making forged and machined componentsOct 03, 12Apr 11, 17Not available
9487843 Method for producing a bearing ringJan 12, 12Nov 08, 16NTN CORPORATION
9340846 Method for improving fatigue strength of cast iron materialOct 31, 11May 17, 16UD TRUCKS CORPORATION
9284632 Steel for nitrocarburizing, nitrocarburized steel part, and producing method of nitrocarburized steel partJan 25, 11Mar 15, 16NIPPON STEEL & SUMITOMO METAL CORPORATION
9284633 Heat resistant cast steel, manufacturing method thereof, cast parts of steam turbine, and manufacturing method of cast parts of steam turbineDec 23, 11Mar 15, 16THE JAPAN STEEL WORKS, LTD., KABUSHIKI KAISHA TOSHIBA,
9243305 Method for producing a bearing ringJan 12, 12Jan 26, 16NTN CORPORATION
9139887 Bearing steel and ingot material for bearing having excellent rolling contact fatigue life characteristics and method for manufacturing the sameMay 24, 11Sep 22, 15JFE STEEL CORPORATION, NTN CORPORATION,
9133533 Axle from a seamless tube for railroad vehicles, and a process for manufacturing an axle from a seamless steel tube for railroad vehiclesDec 01, 08Sep 15, 15V&M do Brasil S.A.
9038429 Method for manufacturing grain-oriented silicon steel with single cold rollingDec 31, 09May 26, 15BAOSHAN IRON & STEEL CO., LTD.
9034121 Low alloy steel for geothermal power generation turbine rotor, and low alloy material for geothermal power generation turbine rotor and method for manufacturing the sameApr 17, 12May 19, 15THE JAPAN STEEL WORKS, LTD., KABUSHIKI KAISHA TOSHIBA,
8974612 High-strength low-alloy steel excellent in high-pressure hydrogen environment embrittlement resistance characteristics and method for producing the sameMay 13, 09Mar 10, 15THE JAPAN STEEL WORKS, LTD.
8652273 High tensile steel for deep drawing and manufacturing method thereof and high-pressure container produced thereofSep 12, 08Feb 18, 14POSCO
7662247 Method of producing martensite wear-resistant cast steel with film austenite for enhancement of toughnessMay 29, 06Feb 16, 10Ningbo Zhedong Precision Casting Co., Ltd.
5221374 Process for using agent for improving the hydrogen cracking resistance of low or intermediate-alloy steels, and pieces obtainedDec 16, 91Jun 22, 93Creusot-Loire Industrie
4468261 Method of normalizing sucker rods using a normalizing unloaderApr 26, 82Aug 28, 84Not available