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Class Information
Number: 420/478
Name: Alloys or metallic compositions > Copper base > Zinc containing > Aluminum containing
Description: Alloy, or metallic composition which additionally contains aluminum.










Sub-classes under this class:

Class Number Class Name Patents
420/480 Manganese containing 38
420/479 Nickel containing 49


Patents under this class:

Patent Number Title Of Patent Date Issued
8568656 Environment-friendly manganese brass alloy and manufacturing method thereof Oct. 29, 2013
8506730 Copper/zinc alloys having low levels of lead and good machinability Aug. 13, 2013
8435361 Copper-zinc alloy for a valve guide May. 7, 2013
8425697 Tin-free lead-free free-cutting magnesium brass alloy Apr. 23, 2013
8366841 Lead-free free-cutting corrosion-resistant silicon-bismuth brass alloy Feb. 5, 2013
8273193 Lead-free, bismuth-free free-cutting silicon brass alloy Sep. 25, 2012
8273192 Lead-free, bismuth-free free-cutting phosphorous brass alloy Sep. 25, 2012
7736448 Nano icrystals copper material with super high strength and conductivity and method of preparing thereof Jun. 15, 2010
7628872 Lead-free free-cutting copper-antimony alloys Dec. 8, 2009
7354489 Lead-free copper alloy and a method of manufacture Apr. 8, 2008
7056396 Copper/zinc alloys having low levels of lead and good machinability Jun. 6, 2006
6977017 Cu-ZN-A1(6%) shape memory alloy with low martensitic temperature and a process for its manufacture Dec. 20, 2005
6933054 Bearing material for the manufacture of wear-resistant slide bearings made of a copper-aluminum-alloy with defined cover layers Aug. 23, 2005
6632300 Copper alloy having improved stress relaxation resistance Oct. 14, 2003
6391163 Method of enhancing hardness of sputter deposited copper films May. 21, 2002
5997663 Nickel-free copper alloy Dec. 7, 1999
5945066 Zinc-copper based alloy and castings made therefrom Aug. 31, 1999
5919322 Alloy, in particular for use in the manufacture of frames for glass, jewelry, and the like Jul. 6, 1999
5908517 Alloy, in particular for use in the manufacture of frames for glass, jewelry, and the like Jun. 1, 1999
5879477 Reduced lead bismuth yellow brass Mar. 9, 1999
5658401 Copper-zinc alloy Aug. 19, 1997
5630984 Brass alloy May. 20, 1997
5409552 Machinable copper alloys having reduced lead content Apr. 25, 1995
5360591 Reduced lead bismuth yellow brass Nov. 1, 1994
5288458 Machinable copper alloys having reduced lead content Feb. 22, 1994
5206480 Wire electrode for electro-discharge machining Apr. 27, 1993
5069874 Method for reducing high-load, low-speed wear resistance in sliding members Dec. 3, 1991
5000915 Wear-resistant copper alloy Mar. 19, 1991
4995924 Synchronizer ring in speed variator made of copper-base alloy Feb. 26, 1991
4994235 Wear-resistance aluminum bronze alloy Feb. 19, 1991
4965045 Copper-based alloy for obtaining aluminum-beta-brasses, containing grain size reducing additives of titanium and niobium Oct. 23, 1990
4874439 Synchronizer ring in speed variator made of wear-resistant copper alloy having high strength and toughness Oct. 17, 1989
4749548 Copper alloy lead material for use in semiconductor device Jun. 7, 1988
4659374 Mixed binder systems for agglomerates Apr. 21, 1987
4642146 Alpha copper base alloy adapted to be formed as a semi-solid metal slurry Feb. 10, 1987
4472213 Copper-base shape-memory alloys Sep. 18, 1984
4452757 Copper alloy for radiators Jun. 5, 1984
4437911 Beta alloys with improved properties Mar. 20, 1984
4407776 Shape memory alloys Oct. 4, 1983
4347081 Dental alloy Aug. 31, 1982
4225051 Containers for storing fluids under pressure Sep. 30, 1980
4148635 High temperature softening resistance of alloy 688 and modified 688 through the addition of Nb Apr. 10, 1979
4148634 Machinability of alloy 688 and modified 688 through the addition of Pb Apr. 10, 1979
4144104 Stable heat shrinkable ternary .beta.-brass alloys containing aluminum Mar. 13, 1979
4038068 Method of melting copper alloys with a flux Jul. 26, 1977











 
 
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