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Class Information
Number: 420/58
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 > Copper containing
Description: Alloy or metallic composition which additionally contains copper.

Patents under this class:

Patent Number Title Of Patent Date Issued
8703047 Clothing ornament made from a high-Mn austenitic stainless steel Apr. 22, 2014
8608873 Stainless steel, cold strip produced from this steel, and method for producing a flat steel product from this steel Dec. 17, 2013
8535606 Pitting corrosion resistant non-magnetic stainless steel Sep. 17, 2013
8528513 Cast steel piston for internal combustion engines Sep. 10, 2013
8486204 Hinge device and electronic device using the same Jul. 16, 2013
8192682 High strength alloys Jun. 5, 2012
7785427 High strength alloys Aug. 31, 2010
7780908 Low nickel containing chromium-nickel-manganese- copper austenitic stainless steel Aug. 24, 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
6824672 Use of austenitic stainless steels in applications requiring anti-coking properties Nov. 30, 2004
6780258 Austenitic stainless steel less susceptible to cracking during forming and a manufacturing method thereof Aug. 24, 2004
6620377 High hardness stainless steel for screws used in magnetic memory devices Sep. 16, 2003
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
6110421 High strength non-magnetic stainless steel and method for producing the same Aug. 29, 2000
6033497 Pitting resistant duplex stainless steel alloy with improved machinability and method of making thereof Mar. 7, 2000
5985209 Martensitic steel for line pipe having excellent corrosion resistance and weldability Nov. 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
5686044 Austenitic stainless steels for press forming Nov. 11, 1997
5456770 Amorphous magnetic alloy with high magnetic flux density Oct. 10, 1995
5352406 Highly mechanical and corrosion resistant stainless steel and relevant treatment process Oct. 4, 1994
5286310 Low nickel, copper containing chromium-nickel-manganese-copper-nitrogen austenitic stainless steel Feb. 15, 1994
5252148 Soft magnetic alloy, method for making, magnetic core, magnetic shield and compressed powder core using the same Oct. 12, 1993
5035855 Martensitic precipitation-hardenable stainless steel Jul. 30, 1991
4946644 Austenitic stainless steel with improved castability Aug. 7, 1990
4911883 Cold working stainless steel Mar. 27, 1990
4880481 Punch and counter punch plates Nov. 14, 1989
4849166 High strength stainless steel Jul. 18, 1989
4822556 Austenitic stainless steel combining strength and resistance to intergranular corrosion Apr. 18, 1989
4820485 Method of producing an iron-, cobalt- and nickel-base alloy having low contents of sulphur, oxygen and nitrogen Apr. 11, 1989
4814140 Galling resistant austenitic stainless steel alloy Mar. 21, 1989
4769213 Age-hardenable stainless steel having improved machinability Sep. 6, 1988
4740254 Pitting resistant duplex stainless steel alloy Apr. 26, 1988
4670353 Magnetooptical recording medium Jun. 2, 1987
4609577 Method of producing weld overlay of austenitic stainless steel Sep. 2, 1986
4568387 Austenitic stainless steel for low temperature service Feb. 4, 1986
4523951 Stainless steel Jun. 18, 1985
4502886 Austenitic stainless steel and drill collar Mar. 5, 1985
4450008 Stainless steel May. 22, 1984
4406698 Martensitic stainless cast steel having high cavitation erosion resistance Sep. 27, 1983
4378246 Precipitation hardening type stainless steel for spring Mar. 29, 1983
4222773 Corrosion resistant austenitic stainless steel containing 0.1 to 0.3 percent manganese Sep. 16, 1980
4116683 Nickel-free austenitic corrosion-resistant steel Sep. 26, 1978

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