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Class Information
Number: 420/13
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > 1.7 percent or more carbon containing > 2.7 percent or more carbon equivalent containing (i.e., cast iron)
Description: Alloy or metallic composition in which the total of the carbon content plus one third the silicon content plus one sixth the phosphorus content is 2.7 percent or more, i.e., cast iron.










Sub-classes under this class:

Class Number Class Name Patents
420/14 Boron containing 16
420/15 Chromium containing 39
420/26 Copper containing 21
420/27 Nickel or molybdenum containing 38
420/28 Over .1 percent aluminum containing 15
420/18 Processes of adding magnesium 24
420/29 Processes 31


Patents under this class:

Patent Number Title Of Patent Date Issued
8641962 Highly stiff and highly damping cast iron Feb. 4, 2014
8366425 Compressor slider, slider preform, scroll part, and compressor Feb. 5, 2013
8333923 High strength gray cast iron Dec. 18, 2012
8012410 High silicon niobium casting alloy and process for producing the same Sep. 6, 2011
7846381 Ferritic ductile cast iron alloys having high carbon content, high silicon content, low nickel content and formed without annealing Dec. 7, 2010
7794650 Heat-resistant cast iron and exhaust equipment member formed thereby Sep. 14, 2010
7419554 Engine cylinder block and cylinder head fabricated from a grey cast iron alloy Sep. 2, 2008
7083685 Gray cast iron member Aug. 1, 2006
7081172 Nodular graphite cast iron with high strength and high toughness Jul. 25, 2006
6939414 Nodular graphite iron alloy Sep. 6, 2005
6908589 High manganese cast iron containing spheroidal vanadium carbide and method for making therof Jun. 21, 2005
6800146 Magnetic circuit member Oct. 5, 2004
6613274 Cast iron alloy and method of making the same Sep. 2, 2003
6572712 Compacted graphite iron brake drum Jun. 3, 2003
6533998 Process for producing nodular cast iron, and casting produced using this process Mar. 18, 2003
6527877 Iron-based alloy containing bonded and free carbon and method of manufacturing the same Mar. 4, 2003
6395107 Cast iron for use in high speed machining with cubic boron nitride and silicon nitride tools May. 28, 2002
RE37520 Gray cast iron system for scroll machines Jan. 22, 2002
6258180 Wear resistant ductile iron Jul. 10, 2001
5858127 Metal alloys and brake drums made from such alloys Jan. 12, 1999
5759298 Gray cast iron system for scroll machines Jun. 2, 1998
5551995 Spheroidal graphite cast iron for crank shafts and a crank shaft manufactured from such cast iron Sep. 3, 1996
5423664 Iron-base alloy for rotary type compressors Jun. 13, 1995
5277977 Ferromagnetic stabilized ultrafine spherical hexagonal crystalline Fe.sub.2 Jan. 11, 1994
5104464 Soft magnetic alloy film Apr. 14, 1992
5100612 Spheroidal graphite cast iron Mar. 31, 1992
5085716 Hot worked rare earth-iron-carbon magnets Feb. 4, 1992
4889687 Nodular cast iron having a high impact strength and process of treating the same Dec. 26, 1989
4859414 Alloy for disk rotor Aug. 22, 1989
4849035 Rare earth, iron carbon permanent magnet alloys and method for producing the same Jul. 18, 1989
4806157 Process for producing compacted graphite iron castings Feb. 21, 1989
4744211 Detachable chain and method of producing the same May. 17, 1988
4702886 Corrosion resistant nickel alloyed ductile cast iron of ferrite structure Oct. 27, 1987
4602810 Tie lug Jul. 29, 1986
4545817 Alloy useful for producing ductile and compacted graphite cast irons Oct. 8, 1985
4467510 Method of conditioning a rotary valve seat Aug. 28, 1984
4433032 High chrome work roll Feb. 21, 1984
4352416 Cast iron railroad brake shoes Oct. 5, 1982
4194901 Process for producing graphite agglomerates, and products obtained by it Mar. 25, 1980
4057098 Method of producing thin-walled castings Nov. 8, 1977
3998623 Method of producing alloys containing titanium carbide Dec. 21, 1976
3997338 Gray cast iron Dec. 14, 1976











 
 
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