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Class Information
Number: 420/9
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > 1.7 percent or more carbon containing
Description: Alloy or metallic composition which additionally contains 1.7 percent or more carbon.










Sub-classes under this class:

Class Number Class Name Patents
420/13 2.7 percent or more carbon equivalent containing (i.e., cast iron) 42
420/10 Six percent or more total group iv, v or vi transition metals containing 36


Patents under this class:

Patent Number Title Of Patent Date Issued
8685179 Fe-based amorphous alloy, powder core using the same, and coil encapsulated powder core Apr. 1, 2014
8623108 Wear-resistant material Jan. 7, 2014
8580048 Steel material composition for producing piston rings and cylinder sleeves Nov. 12, 2013
8366425 Compressor slider, slider preform, scroll part, and compressor Feb. 5, 2013
8097095 Hardfacing material Jan. 17, 2012
7794650 Heat-resistant cast iron and exhaust equipment member formed thereby Sep. 14, 2010
7744703 Fe-based amorphous alloy strip Jun. 29, 2010
6939414 Nodular graphite iron alloy Sep. 6, 2005
6861029 Nodular cast iron alloy Mar. 1, 2005
6837945 Steel cold work tool, its use and manufacturing Jan. 4, 2005
6800146 Magnetic circuit member Oct. 5, 2004
6699335 Machine part Mar. 2, 2004
6527877 Iron-based alloy containing bonded and free carbon and method of manufacturing the same Mar. 4, 2003
6271642 Advanced battery controller with state of charge control Aug. 7, 2001
5423664 Iron-base alloy for rotary type compressors Jun. 13, 1995
5411198 Clean steel tubing May. 2, 1995
5173253 Low expansion cast iron Dec. 22, 1992
5104464 Soft magnetic alloy film Apr. 14, 1992
5085716 Hot worked rare earth-iron-carbon magnets Feb. 4, 1992
5067993 Magnetic core material made of Fe-Co base alloy for high frequencies Nov. 26, 1991
4909843 Highly wear-resistant iron-nickel-copper-molybdenum sintered alloy with addition of phosphorous Mar. 20, 1990
4861395 Method of using machine parts made of austenitic cast iron having resistance to stress corrosion cracking in contact with salt water Aug. 29, 1989
4849035 Rare earth, iron carbon permanent magnet alloys and method for producing the same Jul. 18, 1989
4668310 Amorphous alloys May. 26, 1987
4638847 Method of forming abrasive resistant white cast iron Jan. 27, 1987
4628977 High-durable pneumatic radial tires Dec. 16, 1986
4534793 Cast iron welding materials and method Aug. 13, 1985
4512804 Work-hardenable austenitic manganese steel and method for the production thereof Apr. 23, 1985
4467510 Method of conditioning a rotary valve seat Aug. 28, 1984
4433032 High chrome work roll Feb. 21, 1984
4425169 Austenitic-manganese steel Jan. 10, 1984
4421555 Method of and apparatus for metallurgical treatment of a melt Dec. 20, 1983
4402884 Method for producing ferro-nickel shots Sep. 6, 1983
4314847 Process for dephosphorization and denitrification of chromium-containing iron Feb. 9, 1982
4174961 Method for working-up waste slag from the oxygen steel production Nov. 20, 1979
4165407 Adamite roll material for a rolling mill Aug. 21, 1979
4135916 Process in the manufacture of steels containing nickel Jan. 23, 1979
4129309 Austenitic cast iron Dec. 12, 1978
4032622 Method of concentrating sulfuric acid using a boiler of improved cast iron Jun. 28, 1977
4023739 Lining element for pulp refiners May. 17, 1977
3951650 Low carbon, Ni-Cr-Mo system cast iron roll Apr. 20, 1976











 
 
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