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Class Information
Number: 420/59
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Nine percent or more chromium containing > Eight percent or more total nickel plus manganese containing > Over 0.20 percent nitrogen containing
Description: Alloy or metallic composition which additionally contains more than 0.20 percent nitrogen.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8535606 Pitting corrosion resistant non-magnetic stainless steel Sep. 17, 2013
8486204 Hinge device and electronic device using the same Jul. 16, 2013
8454765 Corrosion-resistant austenitic steel alloy Jun. 4, 2013
8337749 Lean austenitic stainless steel Dec. 25, 2012
8337748 Lean austenitic stainless steel containing stabilizing elements Dec. 25, 2012
8313691 Lean austenitic stainless steel Nov. 20, 2012
8192682 High strength alloys Jun. 5, 2012
8182963 Low-cost manganese-stabilized austenitic stainless steel alloys, bipolar plates comprising the alloys, and fuel cell systems comprising the bipolar plates May. 22, 2012
8119063 Austenitic iron and an iron product Feb. 21, 2012
7892366 Duplex stainless steel alloy and use thereof Feb. 22, 2011
7785427 High strength alloys Aug. 31, 2010
7749431 Stainless steel for high-pressure hydrogen gas Jul. 6, 2010
7708841 Component for use in oil field technology made of a material which comprises a corrosion-resistant austenitic steel alloy May. 4, 2010
7658883 Interstitially strengthened high carbon and high nitrogen austenitic alloys, oilfield apparatus comprising same, and methods of making and using same Feb. 9, 2010
7455811 Brazing material and brazed products manufactured therewith Nov. 25, 2008
7347903 Duplex stainless steel for urea manufacturing plants Mar. 25, 2008
6893727 Metal gasket and a material for its manufacture and a method for their manufacture May. 17, 2005
6824672 Use of austenitic stainless steels in applications requiring anti-coking properties Nov. 30, 2004
6793744 Martenstic stainless steel having high mechanical strength and corrosion Sep. 21, 2004
6761777 High chromium nitrogen bearing castable alloy Jul. 13, 2004
6749697 Duplex stainless steel Jun. 15, 2004
6620377 High hardness stainless steel for screws used in magnetic memory devices Sep. 16, 2003
6267921 Nickel-Free stainless steel for biomedical applications Jul. 31, 2001
6168755 High nitrogen stainless steel Jan. 2, 2001
6110421 High strength non-magnetic stainless steel and method for producing the same Aug. 29, 2000
5882584 Interdental brush wire and interdental brush Mar. 16, 1999
5753179 Steels for exhaust valves having improved fatigue strength at high temperature, corrosion resistance at room and higher temperatures and oxidation resistance May. 19, 1998
5494636 Austenitic stainless steel having high properties Feb. 27, 1996
5328529 High strength austenitic stainless steel having excellent galling resistance Jul. 12, 1994
5308577 Austenitic, non-magnetic, stainless steel alloy and articles made therefrom May. 3, 1994
5094812 Austenitic, non-magnetic, stainless steel alloy Mar. 10, 1992
RE33753 Austenitic steel with improved high-temperature strength and corrosion resistance Nov. 26, 1991
5019332 Heat, corrosion, and wear resistant steel alloy May. 28, 1991
4957700 High strength non-magnetic stainless steel Sep. 18, 1990
4946644 Austenitic stainless steel with improved castability Aug. 7, 1990
4929419 Heat, corrosion, and wear resistant steel alloy and article May. 29, 1990
4915752 Corrosion resistant alloy Apr. 10, 1990
4892704 Low Si high-temperature strength steel tube with improved ductility and toughness Jan. 9, 1990
4888153 Fe-base build-up alloy excellent in resistance to corrosion and wear Dec. 19, 1989
4851059 Non-magnetic high hardness austenitic stainless steel Jul. 25, 1989
4824636 Austenitic steel with improved high-temperature strength and corrosion resistance Apr. 25, 1989
4822556 Austenitic stainless steel combining strength and resistance to intergranular corrosion Apr. 18, 1989
4814140 Galling resistant austenitic stainless steel alloy Mar. 21, 1989
4803045 Cobalt-free, iron-base hardfacing alloys Feb. 7, 1989
4765953 High nitrogen containing duplex stainless steel having high corrosion resistance and good structure stability Aug. 23, 1988
4754950 Valve Jul. 5, 1988
4721600 Superplastic ferrous duplex-phase alloy and a hot working method therefor Jan. 26, 1988
4689198 Austenitic stainless steel with high corrosion resistance and high strength when heat treated Aug. 25, 1987
4675156 Structural austenitic stainless steel with superior proof stress and toughness at cryogenic temperatures Jun. 23, 1987
4640817 Dual-phase stainless steel with improved resistance to corrosion by nitric acid Feb. 3, 1987

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