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Browse by Category: Main > Material Science
Class Information
Number: 420/49
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Nine percent or more chromium containing > Eight percent or more nickel containing > Copper containing
Description: Alloy or metallic composition which additionally contains copper.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8663549 Heat-resisting steel for engine valves excellent in high-temperature strength Mar. 4, 2014
8486204 Hinge device and electronic device using the same Jul. 16, 2013
8268101 Austenitic stainless steel strip having a bright surface finish and excellent mechanical properties Sep. 18, 2012
8071020 High strength Cr-Ni alloy material and seamless pipe for oil well Dec. 6, 2011
7901519 High strength martensitic stainless steel alloys, methods of forming the same, and articles formed therefrom Mar. 8, 2011
7842141 Stainless-steel pipe for oil well and process for producing the same Nov. 30, 2010
7754144 High Nb, Ta, and Al creep- and oxidation-resistant austenitic stainless steel Jul. 13, 2010
7754142 Acid resistant austenitic alloy for valve seat inserts Jul. 13, 2010
7101446 Austenitic stainless steel Sep. 5, 2006
6983743 Stainless steel canister for propellant-driven metering aerosols Jan. 10, 2006
6780258 Austenitic stainless steel less susceptible to cracking during forming and a manufacturing method thereof Aug. 24, 2004
6764647 Corrosion resistant material Jul. 20, 2004
6739333 Stainless steel canister for propellant-driven metering aerosols May. 25, 2004
6485680 Resulfurized austenitic stainless steel Nov. 26, 2002
6485679 Heat resistant austenitic stainless steel Nov. 26, 2002
6440579 Process for producing a drawn wire made of stainless steel, in particular a wire for reinforcing tires, and wire obtained by the process Aug. 27, 2002
6352670 Oxidation and corrosion resistant austenitic stainless steel including molybdenum Mar. 5, 2002
6171547 Austenitic stainless steel having excellent sulfuric acid corrosion resistance and excellent workability Jan. 9, 2001
6123784 Austenitic stainless steel especially for making wire Sep. 26, 2000
6036917 Corrosion resistant austenitic stainless steel Mar. 14, 2000
RE36382 Precipitation hardenable martensitic stainless steel Nov. 9, 1999
5951789 Heat resisting alloy for exhaust valve and method for producing the exhaust valve Sep. 14, 1999
5837190 Free-machining austenitic stainless steel Nov. 17, 1998
5686044 Austenitic stainless steels for press forming Nov. 11, 1997
5651937 Austenitic stainless steel, in particular for making wire Jul. 29, 1997
5626817 Austenitic heat resistant steel excellent in elevated temperature strength May. 6, 1997
5614149 Stainless steels for coins and method of producing coins of stainless steel Mar. 25, 1997
5512237 Precipitation hardenable martensitic stainless steel Apr. 30, 1996
5512238 Free-machining austenitic stainless steel Apr. 30, 1996
5482674 Free-machining austenitic stainless steel Jan. 9, 1996
5362439 Austenitic stainless steel having a high machinability and an improved cold deformation Nov. 8, 1994
5352406 Highly mechanical and corrosion resistant stainless steel and relevant treatment process Oct. 4, 1994
5330705 Heat resistant alloys Jul. 19, 1994
5320801 High carbon high chromium alloys having corrosion and abrasion resistance Jun. 14, 1994
5306464 Abrasion, erosion and corrosion resistant alloy Apr. 26, 1994
5252148 Soft magnetic alloy, method for making, magnetic core, magnetic shield and compressed powder core using the same Oct. 12, 1993
5024812 Hydrochloric acid resistant stainless steel Jun. 18, 1991
4933143 Austenitic stainless steel having improved corrosion resistance in hot water Jun. 12, 1990
4933142 Low carbon plus nitrogen free-machining austenitic stainless steels with improved machinability and corrosion resistance Jun. 12, 1990
4933027 Iron-based shape-memory alloy excellent in shape-memory property, corrosion resistance and high-temperature oxidation resistance Jun. 12, 1990
4917860 Corrosion resistant alloy Apr. 17, 1990
4902472 High strength stainless steel Feb. 20, 1990
4880481 Punch and counter punch plates Nov. 14, 1989
4816085 Tough weldable duplex stainless steel wire Mar. 28, 1989
4816217 High-strength alloy for industrial vessels Mar. 28, 1989
4784828 Low carbon plus nitrogen, free-machining austenitic stainless steel Nov. 15, 1988
4740353 Austenitic stainless steel Apr. 26, 1988
4444588 Free machining, cold formable austenitic stainless steel Apr. 24, 1984
4390367 High-alloyed steel being resistive to corrosion by natural gas Jun. 28, 1983
4378246 Precipitation hardening type stainless steel for spring Mar. 29, 1983

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