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Class Information
Number: 420/46
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Nine percent or more chromium containing > Eight percent or more nickel containing > Over 2 percent manganese containing > Molybdenum or tungsten containing
Description: Alloy or metallic composition which additionally contains one or more of molybdenum or tungsten.










Sub-classes under this class:

Class Number Class Name Patents
420/47 Group iv or v transition metal containing 50


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8486204 Hinge device and electronic device using the same Jul. 16, 2013
8454765 Corrosion-resistant austenitic steel alloy Jun. 4, 2013
8431072 Cast alumina forming austenitic stainless steels Apr. 30, 2013
8287805 Brazing material Oct. 16, 2012
8192682 High strength alloys Jun. 5, 2012
8137613 Austenitic stainless steel welded joint and austenitic stainless steel welding material Mar. 20, 2012
8119063 Austenitic iron and an iron product Feb. 21, 2012
RE41504 Heat and corrosion resistant cast CF8C stainless steel with improved high temperature strength and ductility Aug. 17, 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
7531129 Stainless steel for high-pressure hydrogen gas May. 12, 2009
7170073 Stainless steel product containing B and method for production thereof Jan. 30, 2007
6939415 Austenitic stainless steel and manufacturing method thereof Sep. 6, 2005
6926778 Austenitic stainless steel excellent in high temperature strength and corrosion resistance, heat resistant pressurized parts, and the manufacturing method thereof Aug. 9, 2005
6918968 Austenitic stainless steel Jul. 19, 2005
6918967 Corrosion resistant austenitic alloy Jul. 19, 2005
6749697 Duplex stainless steel Jun. 15, 2004
6632395 Stainless steels Oct. 14, 2003
6409847 Austenitic nickel-chromium steel alloys Jun. 25, 2002
5976275 High-nickel austenitic stainless steel resistant to degradation by neutron irradiation Nov. 2, 1999
5569334 Stainless steel member for semiconductor fabrication equipment and surface treatment method therefor Oct. 29, 1996
5529604 Modified stainless steel powder composition Jun. 25, 1996
5494636 Austenitic stainless steel having high properties Feb. 27, 1996
5480609 Austenitic stainless steel with high resistance to corrosion by chloride and sulphuric media and uses Jan. 2, 1996
5474737 Alloys for cryogenic service Dec. 12, 1995
5340534 Corrosion resistant austenitic stainless steel with improved galling resistance Aug. 23, 1994
5141705 Austenitic stainless steel Aug. 25, 1992
5089224 Resulphurized austenitic stainless steel with improved machinability Feb. 18, 1992
5024812 Hydrochloric acid resistant stainless steel Jun. 18, 1991
5021215 High-strength, heat-resistant steel with improved formability and method thereof Jun. 4, 1991
4996038 Heat recovery from concentrated sulfuric acid Feb. 26, 1991
4818483 Alloy resistant to seawater and corrosive process fluids Apr. 4, 1989
4818484 Austenitic, non-magnetic, stainless steel alloy Apr. 4, 1989
4803045 Cobalt-free, iron-base hardfacing alloys Feb. 7, 1989
4560408 Method of using chromium-nickel-manganese-iron alloy with austenitic structure in sulphurous environment at high temperature Dec. 24, 1985
4530719 Austenitic stainless steel for high temperature applications Jul. 23, 1985
4498928 Ductile duplex iron-based alloy containing aluminum Feb. 12, 1985
4441926 Non-magnetic alloy having high hardness Apr. 10, 1984
4371394 Corrosion resistant austenitic alloy Feb. 1, 1983
4341555 High strength austenitic stainless steel exhibiting freedom from embrittlement Jul. 27, 1982
4324584 Process for the decarburization of chromium-containing pig iron Apr. 13, 1982
4302247 High strength austenitic stainless steel having good corrosion resistance Nov. 24, 1981
4294614 Austenitic iron-base cryogenic alloy and arc welding electrode for depositing the same Oct. 13, 1981
4285725 Non-magnetizable steel casting alloy, its use and process of manufacture Aug. 25, 1981
4141762 Two-phase stainless steel Feb. 27, 1979
4122817 Internal combustion valve having an iron based hard-facing alloy contact surface Oct. 31, 1978
4099966 Austenitic stainless steel Jul. 11, 1978
4086085 Austenitic iron alloys Apr. 25, 1978
RE29313 Pitting corrosion resistant austenite stainless steel Jul. 19, 1977
3976476 High temperature cast austenitic exhaust valve Aug. 24, 1976

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