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Class Information
Number: 420/11
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > 1.7 percent or more carbon containing > Six percent or more total group iv, v or vi transition metals containing > Eight percent or more chromium containing
Description: Alloy or metallic composition which additionally contains 8 percent or more of chromium.










Sub-classes under this class:

Class Number Class Name Patents
420/12 Molybdenum, tungsten or vanadium containing 52


Patents under this class:

Patent Number Title Of Patent Date Issued
8540825 Low-temperature stainless steel carburization method Sep. 24, 2013
8497027 Utilization of amorphous steel sheets in honeycomb structures Jul. 30, 2013
8202375 Temperature-stable cast iron alloy and use of said alloy Jun. 19, 2012
8158274 Welding material and welded joint structure Apr. 17, 2012
8097095 Hardfacing material Jan. 17, 2012
7951469 Welding material and welded joint structure May. 31, 2011
7922836 Ferrous abrasion resistant sliding material Apr. 12, 2011
6761777 High chromium nitrogen bearing castable alloy Jul. 13, 2004
6248292 Overlay welding alloy and engine valve overlayed therewith Jun. 19, 2001
5908515 Bearing component Jun. 1, 1999
5660939 Stainless steel alloy Aug. 26, 1997
4880461 Super hard high-speed tool steel Nov. 14, 1989
4638847 Method of forming abrasive resistant white cast iron Jan. 27, 1987
4629506 Process for the production of ferrochromium Dec. 16, 1986
4487630 Wear-resistant stainless steel Dec. 11, 1984
4434006 Free cutting steel containing controlled inclusions and the method of making the same Feb. 28, 1984
4433032 High chrome work roll Feb. 21, 1984
4400208 Process for the production of iron, phosphorus, carbon and chromium based amorphous metal alloys, and the alloys obtained Aug. 23, 1983
4314847 Process for dephosphorization and denitrification of chromium-containing iron Feb. 9, 1982
4170467 Method for producing high chromium steels having extremely low carbon and nitrogen contents Oct. 9, 1979
4154602 Method of denitriding a high chromium molten steel with a minimum chromium loss May. 15, 1979
4023739 Lining element for pulp refiners May. 17, 1977
3970445 Wear-resistant alloy, and method of making same Jul. 20, 1976











 
 
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