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Class Information
Number: 420/41
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Nine percent or more chromium containing > Lead, bismuth, antimony, calcium, selenium or tellurium containing
Description: Alloy or metallic composition which additionally contains at least one of lead, bismuth, antimony, calcium or tellurium.










Patents under this class:
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Patent Number Title Of Patent Date Issued
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
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
8017071 Corrosion-resistant, cold-formable, machinable, high strength, martensitic stainless steel Sep. 13, 2011
7381369 Free cutting alloy Jun. 3, 2008
7297214 Free cutting alloy Nov. 20, 2007
6960196 Detectable heavy duty needle Nov. 1, 2005
6921511 Sulphur-containing ferritic stainless steel that can be used for ferromagnetic parts Jul. 26, 2005
6761853 Free-cutting tool steel Jul. 13, 2004
6685881 Stainless cast steel having good heat resistance and good machinability Feb. 3, 2004
6673165 High-hardness martensitic stainless steel excellent in corrosion resistance Jan. 6, 2004
6485680 Resulfurized austenitic stainless steel Nov. 26, 2002
6464935 Steel for shaft Oct. 15, 2002
6355212 Alloy for corrosion-resistant coatings or surface coatings Mar. 12, 2002
6344094 Ferritic-austenitic two-phase stainless steel Feb. 5, 2002
6332934 Martensitic stainless steel for seamless steel pipe Dec. 25, 2001
6274084 Corrosion-resistant low-nickel austenitic stainless steel Aug. 14, 2001
6206983 Medium carbon steels and low alloy steels with enhanced machinability Mar. 27, 2001
6123784 Austenitic stainless steel especially for making wire Sep. 26, 2000
6123897 High chromium heat resistant cast steel material and pressure vessel formed thereof Sep. 26, 2000
6096441 Austenoferritic stainless steel having a very low nickel content and a high tensile elongation Aug. 1, 2000
6056917 Austenitic stainless steel having a very low nickel content May. 2, 2000
6033625 Parts of electronic devices made of ferritic free cutting stainless steel Mar. 7, 2000
5939018 Martensitic stainless steels for seamless steel pipe Aug. 17, 1999
5922145 Steel products excellent in machinability and machined steel parts Jul. 13, 1999
5879619 Hydrogen sulfide corrosion resistant high-Cr and high-Ni alloys Mar. 9, 1999
5795411 Ferritic stainless steel wire and steel wool Aug. 18, 1998
5772956 High strength, ferritic heat-resistant steel having improved resistance to intermetallic compound precipitation-induced embrittlement Jun. 30, 1998
5709836 Chromium steel sheets having an excellent press formability Jan. 20, 1998
5656237 Resulfurized austenitic stainless steel with improved machinability Aug. 12, 1997
5651937 Austenitic stainless steel, in particular for making wire Jul. 29, 1997
5591392 Steel plate having good corrosion resistance to condensed water Jan. 7, 1997
5496515 Ferritic stainless steel with improved machinability Mar. 5, 1996
5489416 Heat-resistant, austenitic cast steel and exhaust equipment member made thereof Feb. 6, 1996
5427635 Martenstitic stainless steel with improved machinability Jun. 27, 1995
5413754 Ferritic stainless steel exhibiting excellent atmospheric corrosion resistance and crevice corrosion resistance May. 9, 1995
5372778 Electromagnetic stainless steel Dec. 13, 1994
5362439 Austenitic stainless steel having a high machinability and an improved cold deformation Nov. 8, 1994
5352404 Process for forming contact material including the step of preparing chromium with an oxygen content substantially reduced to less than 0.1 wt. % Oct. 4, 1994
5320687 Embrittlement resistant stainless steel alloy Jun. 14, 1994
5223214 Heat treating furnace alloys Jun. 29, 1993
5217545 Heater sheath alloy Jun. 8, 1993
5190722 High cold-forging electromagnetic stainless steel Mar. 2, 1993
5160382 Heater sheath alloy Nov. 3, 1992
5089224 Resulphurized austenitic stainless steel with improved machinability Feb. 18, 1992
4999158 Oxidation resistant iron base alloy compositions Mar. 12, 1991
4969963 Soft magnetic stainless steel having good cold forgeability Nov. 13, 1990
4957699 Soft magnetic Cr-Al steel Sep. 18, 1990
4844865 Seawater-corrosion-resistant non-magnetic steel materials Jul. 4, 1989
4837108 Austenitic free cutting stainless steels Jun. 6, 1989
4812287 Nickel-chromium stainless steel having improved corrosion resistances and machinability Mar. 14, 1989

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