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Class Information
Number: 420/10
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
Description: Alloys or metallic composition which additionally contains 6 percent or more total content of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, or tungsten, singly or in combination.










Sub-classes under this class:

Class Number Class Name Patents
420/11 Eight percent or more chromium containing 23


Patents under this class:

Patent Number Title Of Patent Date Issued
8632641 High-alloy cold work die steel Jan. 21, 2014
8097095 Hardfacing material Jan. 17, 2012
7794650 Heat-resistant cast iron and exhaust equipment member formed thereby Sep. 14, 2010
7611590 Wear resistant alloy for valve seat insert used in internal combustion engines Nov. 3, 2009
7517416 Bulk-solidifying high manganese non-ferromagnetic amorphous steel alloys and related method of using and making the same Apr. 14, 2009
7081151 Alloy and method for producing same Jul. 25, 2006
6916444 Wear resistant alloy containing residual austenite for valve seat insert Jul. 12, 2005
6908589 High manganese cast iron containing spheroidal vanadium carbide and method for making therof Jun. 21, 2005
6482354 High-hardness powder metallurgy tool steel and article made therefrom Nov. 19, 2002
6348109 Steel material and method for its manufacturing Feb. 19, 2002
6248292 Overlay welding alloy and engine valve overlayed therewith Jun. 19, 2001
6057045 High-speed steel article May. 2, 2000
5969277 Steel for shaping tools Oct. 19, 1999
5853504 Material for lapping tools and lapping surface plate using the same Dec. 29, 1998
5777828 Magnetic alloy and magnetic head having at least a part made of the magnetic alloy Jul. 7, 1998
5651842 High toughness high-speed steel member and manufacturing method Jul. 29, 1997
5306568 High Young's modulus materials and surface-coated tool members using the same Apr. 26, 1994
5292382 Molybdenum-iron thermal sprayable alloy powders Mar. 8, 1994
5104464 Soft magnetic alloy film Apr. 14, 1992
5021085 High speed tool steel produced by powder metallurgy Jun. 4, 1991
4880461 Super hard high-speed tool steel Nov. 14, 1989
4638847 Method of forming abrasive resistant white cast iron Jan. 27, 1987
4528045 Heat-resisting spheroidal graphite cast iron Jul. 9, 1985
4469514 Sintered high speed tool steel alloy composition Sep. 4, 1984
4433032 High chrome work roll Feb. 21, 1984
4292074 Wear resistant alloy Sep. 29, 1981
4242130 High-speed steel Dec. 30, 1980
4165407 Adamite roll material for a rolling mill Aug. 21, 1979
4153017 Alloyed chilled iron May. 8, 1979
4152144 Metallic glasses having a combination of high permeability, low magnetostriction, low ac core loss and high thermal stability May. 1, 1979
4132419 Oil seal ring for rotary piston engines Jan. 2, 1979
4110514 Weld metal deposit coated tool steel Aug. 29, 1978
4071355 Recovery of vanadium from pig iron Jan. 31, 1978
4023739 Lining element for pulp refiners May. 17, 1977
4021205 Sintered powdered ferrous alloy article and process for producing the alloy article May. 3, 1977
3998623 Method of producing alloys containing titanium carbide Dec. 21, 1976











 
 
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