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Class Information
Number: 420/70
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Nine percent or more chromium containing > Group iv or v transition metal containing
Description: Alloy or metallic composition which additionally contains one or more of titanium, zirconium, hafnium, vanadium, niobium or tantalum.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8641835 Iron alloy, iron-alloy member, and process for manufacturing the same Feb. 4, 2014
8607941 Steel sheet for brake disc, and brake disc Dec. 17, 2013
8470237 Stainless steel excellent in corrosion resistance, ferritic stainless steel excellent in resistance to crevice corrosion and formability, and ferritic stainless steel excellent in resistance t Jun. 25, 2013
8465898 Ferrite carrier core material and ferrite carrier for electrophotographic developer, and electrophotographic developer using the ferrite carrier Jun. 18, 2013
8444916 Stainless steel excellent in corrosion resistance, ferritic stainless steel excellent in resistance to crevice corrosion and formability, and ferritic stainless steel excellent in resistance t May. 21, 2013
8357328 Methods for processing nanostructured ferritic alloys, and articles produced thereby Jan. 22, 2013
8337748 Lean austenitic stainless steel containing stabilizing elements Dec. 25, 2012
8337749 Lean austenitic stainless steel Dec. 25, 2012
8168008 Martensitic stainless steel pipe May. 1, 2012
8163233 Martensitic stainless steel for welded structures Apr. 24, 2012
8153055 Ferritic stainless steel with excellent heat resistance Apr. 10, 2012
8007715 Welding additive material Aug. 30, 2011
7985372 Ferritic stainless steel sheet for use in raw material pipe for forming bellows pipe Jul. 26, 2011
7943085 Ferritic stainless steel for automobile exhaust gas passage components and welded steel pipe May. 17, 2011
7883663 Low chromium stainless steel superior in corrosion resistance of multipass welded heat affected zones and its method of production Feb. 8, 2011
7862666 Highly anticorrosive high strength stainless steel pipe for linepipe and method for manufacturing same Jan. 4, 2011
7842141 Stainless-steel pipe for oil well and process for producing the same Nov. 30, 2010
7767037 High strength stainless steel pipe for use in oil well having superior corrosion resistance and manufacturing method thereof Aug. 3, 2010
7704338 Method of manufacturing a martensitic stainless steel Apr. 27, 2010
RE40950 Ferritic stainless steel plate Nov. 10, 2009
7476282 Martensitic stainless steel pipe Jan. 13, 2009
7297214 Free cutting alloy Nov. 20, 2007
6884388 Low carbon martensitic stainless steel and method for production thereof Apr. 26, 2005
6855213 Non-ridging ferritic chromium alloyed steel Feb. 15, 2005
6776956 Steel for separators of solid-oxide type fuel cells Aug. 17, 2004
6756011 High-strength, high corrosion-resistant and non-magnetic stainless steel Jun. 29, 2004
6719855 Fe--cr--al based alloy foil and method for producing the same Apr. 13, 2004
6669790 Iron-based casting alloy Dec. 30, 2003
6592685 Transformation controlled nitride precipitation hardening heat treatable steel Jul. 15, 2003
6582652 Stainless steel alloy having lowered nickel-chromium toxicity and improved biocompatibility Jun. 24, 2003
6511554 Stainless spheroidal carbide cast iron material Jan. 28, 2003
6479013 Casting components made from a tool steel Nov. 12, 2002
6475642 Oxidation-resistant coatings, and related articles and processes Nov. 5, 2002
6464802 High Cr steel pipe for line pipe Oct. 15, 2002
6458221 Ferritic stainless steel plate Oct. 1, 2002
6406563 Stainless spheroidal carbide cast iron Jun. 18, 2002
6387192 Light constructional steel and the use thereof May. 14, 2002
6375764 Weaving machine member made of an abrasion-resistant steel Apr. 23, 2002
6355212 Alloy for corrosion-resistant coatings or surface coatings Mar. 12, 2002
6334977 Powder material for powder plasma overlaying and powder plasma overlaying metal Jan. 1, 2002
6322638 Electromagnetic steel sheet having excellent high-frequency magnetic properties Nov. 27, 2001
6306341 Stainless steel product having excellent antimicrobial activity and method for production thereof Oct. 23, 2001
6214289 Iron-chromium-silicon alloys for high-temperature oxidation resistance Apr. 10, 2001
6168756 Highly corrosion-resistant chromium-containing steel with excellent oxidation resistance and intergranular corrosion resistance Jan. 2, 2001
6162306 Electromagnetic steel sheet having excellent high-frequency magnetic properities and method Dec. 19, 2000
5906791 Steel alloys May. 25, 1999
5843370 Ferritic stainless steel for exhaust system equipment of vehicle Dec. 1, 1998
5707586 Free machining stainless steel and components for automotive fuel and exhaust systems made therefrom Jan. 13, 1998
5662864 Fe-Cr alloy exhibiting excellent ridging resistance and surface characteristics Sep. 2, 1997
5350559 Ferrite steel which excels in high-temperature strength and toughness Sep. 27, 1994

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