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Class Information
Number: 420/115
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Chromium containing, but less than 9 percent > Processes
Description: Processes of preparing an alloy or metallic composition .










Sub-classes under this class:

Class Number Class Name Patents
420/116 Including reducing a chromium compound 5


Patents under this class:

Patent Number Title Of Patent Date Issued
8414713 High strength military steel Apr. 9, 2013
8394209 High-strength steel sheet excellent in resistance to stress-relief annealing and in low-temperature joint toughness Mar. 12, 2013
8163108 High-strength cold-rolled steel sheet, high-strength galvanized steel sheet, and high-strength alloyed hot-dip galvanized steel sheet having excellent formability and weldability, and methods Apr. 24, 2012
8097207 Steel having high mechanical strength and wear resistance Jan. 17, 2012
8038934 High-strength spring steel excellent in brittle fracture resistance and method for producing same Oct. 18, 2011
7794651 Steel having high mechanical strength and wear resistance Sep. 14, 2010
6426040 Si(Ge)-Cu-V steel alloy Jul. 30, 2002
6042782 Welding material for stainless steels Mar. 28, 2000
6019938 High ductility very clean non-micro banded die casting steel Feb. 1, 2000
5102619 Ferrous alloys having enhanced fracture toughness and method of manufacturing thereof Apr. 7, 1992
4853032 Process for producing low carbon steel for cold drawing Aug. 1, 1989
4810287 Process for producing steel for valve springs Mar. 7, 1989
4028098 Cryogenic steel Jun. 7, 1977
3951645 Steelmaking practice for production of a virtually inclusion-free semi-killed product Apr. 20, 1976
3947267 Process for making stainless steel Mar. 30, 1976











 
 
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