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Class Information
Number: 420/484
Name: Alloys or metallic compositions > Copper base > Zinc containing > Refractory metal containing
Description: Alloy, or metallic composition which additionally contains at least one of the metals titanium, vanadium, rhromium, zirconium, niobium, molybdenium, hafnium, tantalum, or tungsten.










Patents under this class:

Patent Number Title Of Patent Date Issued
8506730 Copper/zinc alloys having low levels of lead and good machinability Aug. 13, 2013
8425697 Tin-free lead-free free-cutting magnesium brass alloy Apr. 23, 2013
8273193 Lead-free, bismuth-free free-cutting silicon 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
7056396 Copper/zinc alloys having low levels of lead and good machinability Jun. 6, 2006
6881281 High-strength, high conductivity copper alloy excellent in fatigue and intermediate temperature properties Apr. 19, 2005
6632300 Copper alloy having improved stress relaxation resistance Oct. 14, 2003
6093499 Copper alloy foils Jul. 25, 2000
5766377 Copper-zinc-alloy for use in drinking-water installations Jun. 16, 1998
5288683 Wear-resistant copper alloys and synchronizer rings for automobiles comprising the same Feb. 22, 1994
4965045 Copper-based alloy for obtaining aluminum-beta-brasses, containing grain size reducing additives of titanium and niobium Oct. 23, 1990
4886641 Electrical contact spring material made of copper base alloy of high strength and toughness with reduced anisotropy in characteristics Dec. 12, 1989
4612167 Copper-base alloys for leadframes Sep. 16, 1986
4559200 High strength and high conductivity copper alloy Dec. 17, 1985
4284436 Process for the production of bands or sheets of isotropic mechanical properties from copper or copper alloys Aug. 18, 1981
4207096 Method of producing graphite-containing copper alloys Jun. 10, 1980
4180398 Modification of leaded brasses to improve hot workability Dec. 25, 1979
4076560 Wrought copper-silicon based alloys with enhanced elasticity and method of producing same Feb. 28, 1978











 
 
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