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| Number | Title | Issue Date |
| 7354489 | Lead-free copper alloy and a method of manufacture A lead-free copper alloy based on Cu—Zn—Si and a method of manufacture thereof. The copper alloy is built on the basis of copper, zinc and silicon without toxic additives and consists of: 70 to 83% Cu, 1 to 5% Si and the further matrix-active elements: 0.01 to 2... | 04/08/2008 |
| 7056396 | Copper/zinc alloys having low levels of lead and good machinability The free-cutting copper alloy according to the present invention contains a greatly reduced amount of lead in comparison with conventional free-cutting copper alloys, but provides industrially satisfactory machinability. The free-cutting alloys comprise 69 to 79 per... | 06/06/2006 |
| 6958221 | Cell flow apparatus and method for real-time measurements of patient cellular responses The present invention is directed to a method for determining the effect of each of a plurality of test agents on cells from a subject, and a method to profile patient cell responses to test agents. ... | 10/25/2005 |
| 6787101 | Die-casting brass alloy which is resistant to dezincification The present invention relates to a die-casting brass alloy having a dezincification resistance, which is lower than 100 μm for a separate value according to British Standard BS 2872 in a die-casting condition (i.e. without a subsequent phase transforming heat treat... | 09/07/2004 |
| 6632300 | Copper alloy having improved stress relaxation resistance A copper alloy having improved stress relaxation resistance is formed from a copper base alloy that consists, by weight, essentially of 1.8%-3.0% iron, 0.01%-1.0% zinc, 0.001 %-0.25% phosphorus, 0.1 %-0.35% magnesium and the balance is copper and unavoida... | 10/14/2003 |
| 6413330 | Lead-free free-cutting copper alloys A lead-free free-cutting copper alloy having 69 to 79 percent, by weight, of copper; greater than 3 percent, by weight, of silicon; and a remaining percent, by weight, of zinc. The alloy preferable has greater than 3.0 percent and less than or equal to 4.... | 07/02/2002 |
| 6391163 | Method of enhancing hardness of sputter deposited copper films The present invention provides a method and apparatus for forming a copper layer on a substrate, preferably using a sputtering process. The sputtering process involves bombarding a conductive member of enhanced hardness with ions to dislodge the copper fr... | 05/21/2002 |
| 6103188 | High-conductivity copper microalloys obtained by conventional continuous or semi-continuous casting We provide a new copper microalloy with high-conductivity, excellent heat resistance and high strain strength, which can be obtained by conventional continuous or semi-continuous casting, which essentially consists of at least one element selected from th... | 08/15/2000 |
| 6059901 | Bismuthized Cu-Ni-Mn-Zn alloy Bismuth bearing copper-nickel-manganese-zinc corrosion and gall resistant castable alloy, particularly for use in food processing machinery, with the following weight percentage range: Nickel=12-28 Manganese=12-28 Zinc=12-28 Aluminum=0.5-2.00 Bismuth=2-6 Phosp... | 05/09/2000 |
| 5879477 | Reduced lead bismuth yellow brass Reduced lead bismuth yellow brasses are disclosed that are primarily useful for plumbing applications. Very low levels of grain refiners are used to increase dezincification resistance, to improve polishability, and for other desired characteristics. At l... | 03/09/1999 |
| 5788924 | Wear resistant copper alloy and synchronizer ring made thereof A wear resistant copper alloy composition which includes: ______________________________________ Component (% by weight) ______________________________________ Zn 20 to 40 Al 2 to 11 at least one ... | 08/04/1998 |
| 5766377 | Copper-zinc-alloy for use in drinking-water installations A drinking water installation is made up of a source of drinking water and equipment for delivering the drinking water. In the equipment for delivering drinking water, a copper-zinc alloy which does not contain lead or bismuth is used. This alloy has a co... | 06/16/1998 |
| 5653827 | Brass alloys Reduced-lead yellow brass alloys are disclosed. The alloys comprise copper; zinc; an amount of bismuth effective to enhance castability of the alloys; and an amount of selenium effective to increase machinability of the alloy. Preferably, the alloys furth... | 08/05/1997 |
| 5487867 | Copper-bismuth casting alloys A copper based casting alloy in which lead is replaced by 0.1 to 7 wt % bismuth and 0.1 to 2 wt % mischmetal or its rare earth equivalent is used to improve the distribution of bismuth in the alloy. The alloy is further defined by additions of tin, zinc, ... | 01/30/1996 |
| 5441696 | Copper-nickel based alloy A copper-nickel based alloy, which comprises 3 to 25 wt % of Ni, 0.1 to 1.5 t % of Mn, 0.0001 to 0.01 wt % of B and the rest being Cu and an unavoidable element.... | 08/15/1995 |
| 5360591 | Reduced lead bismuth yellow brass Reduced lead bismuth yellow brasses are disclosed that are primarily useful for plumbing applications. Very low levels of grain refiners are used to increase dezincification resistance, to improve polishability, and for other desired characteristics. Silv... | 11/01/1994 |
| 5346668 | Copper based alloy for wear resistant sliding layer and sliding member A Cu-based wear-resistant alloy of a sliding material consists essentially of, by weight, 10-35% Zn, 2-20% Pb, 1-10% Ni, 0.1-1% B and, as required, 0.5-10% of Sn. The alloy can be used under severe conditions of use at elevated speed and temperature with ... | 09/13/1994 |
| 5344606 | Fluid treatment alloy casting of Cu-Sn-Ni-Zn A suitable casting alloy for use in a fluid treatment device may be made as a copper-nickel-zinc-tin (CU--NI--ZN--SN) alloy without the addition of silver, silicon or magnesium, if certain identified trace metals are kept below certain levels. It appears ... | 09/06/1994 |
| 5288683 | Wear-resistant copper alloys and synchronizer rings for automobiles comprising the same A wear-resistant copper alloy which consists essentially of 56 to 65 wt. % of Cu, 28 to 32 wt. % of Zn, 3.5 to 5.5 wt. % of Al, 0.5 to 2.0 wt. % of Fe, 1.0 to 3.0 wt. % of Ni, 0.1 to 1.0 wt. % of Nb, and 0.4 to 1.5 wt. % of Ti, provided that Ti+Nb is equa... | 02/22/1994 |
| 5250256 | High-tensile copper alloy for current conduction having superior flexibility A high-tensile copper alloy for current conduction and having superior flexibility is disclosed. The hightensile copper alloy, in a first embodiment, is consisting essentially of: from 2.0 to 4.0% by weight of Ni; from 0.4 to 1.0% by weight of Si; from 0.... | 10/05/1993 |
| 5246509 | Copper base alloy superior in resistances to seizure, wear and corrosion suitable for use as material of sliding member A copper base alloy suitable for use as a material of a sliding member, superior in seizure resistance, wear resistance and corrosion resistance. The alloy comprises 1.0 to 3.5 wt % Mn, 0.3 to 1.5 wt % Si, 11.5 to 25 wt % Zn, 5 to 18 wt % Pb and the balan... | 09/21/1993 |
| 5183637 | Wear resistant copper alloys A wear-resistant copper alloy containing 1.2 to 8.5% Mn, 0.3 to 2.5% Si, 3.0 to 8.0% Al, 20 to 40% Zn, 0.05% to 1.5% Te, and the balance of Cu and unavoidable impurities. The alloy includes other variations based on by adding (1) 0.5 to 3% Ni, (2) 0.5 to ... | 02/02/1993 |
| 5098654 | Alloy based on copper, manganese and aluminum, and objects made of said alloy An alloy based on copper, manganese and aluminum, said alloy further containing iron and nickel, besides unavoidable impurities, with less than 7% by weight zinc and possible other metals, which alloy is formed of 10-55% by weight manganese, 4-10% by weig... | 03/24/1992 |
| 5069874 | Method for reducing high-load, low-speed wear resistance in sliding members Disclosed herein is a wear-resistance alloy comprising 10 to 40 wt % of Zn, 3 to 10 wt % of Al, 0.1 to 4 wt % of Cr and the balance Cu.... | 12/03/1991 |
| 5000915 | Wear-resistant copper alloy Disclosed herein is a wear-resistance alloy consisting essentially of about 10 to 40 wt % of Zn, about 3 to 10 wt % of Al, about 0.1 to 4 wt % of Cr, and optionally not more than about 8 wt % of Mn and not more than about 2 wt % of Ni, with the balance, C... | 03/19/1991 |
| 4995924 | Synchronizer ring in speed variator made of copper-base alloy A novel synchronizer ring for use in a speed variator that is made of a Cu base alloy and which exhibits good initial accommodation by mating surfaces while ensuring high wear resistance is disclosed. The ring is made of a Cu base alloy containing 20-40% ... | 02/26/1991 |
| 4994235 | Wear-resistance aluminum bronze alloy Disclosed herein is a wear-resistance aluminum bronze alloy comprising 4 to 15 wt % of Al, 0.1 to 10 wt % of Cr and the balance Cu, and optionally containing not more than 6 wt % of Ni and not more than 15 wt % of Mn.... | 02/19/1991 |
| 4954187 | Precipitates copper-zinc alloy with nickel silicide Utilization of a copper-zinc alloy for semifinished materials and semi-manufactured articles; especially synchronizing rings. The copper-zinc alloy is essentially constituted of 50 to 65% copper, 1 to 6% aluminum, 0.5 to 5% silicon, 5 to 8% nickel, as wel... | 09/04/1990 |
| 4944915 | Copper alloys for electrical and electronic parts and its manufacturing process Copper alloys for electrical and electronic parts and its manufacturing process are disclosed. The copper alloys consist essentially of 20 to 27% Zinc, 2 to 5% Aluminum, 0.5 to 5.0% Nickel, 0.1 to 1% Silicon, and 0.01 to 0.5% Zirconium. The copper alloys ... | 07/31/1990 |
| 4874439 | Synchronizer ring in speed variator made of wear-resistant copper alloy having high strength and toughness A synchronizer ring for use in an automotive speed variator. The ring not only has high strength and toughness but also exhibits high wear resistance, as well as good synchronizing characteristics with respect to a mating member as expressed in terms of f... | 10/17/1989 |
| 4872048 | Semiconductor device having copper alloy leads A semiconductor device having leads of high strength and elongation and which consist essentially of a copper alloy that contains 0.05-1% of Cr, 0.005-0.3% of Zr, 0.001-0.05% of Li, 0-1% of Ni, 0-1% of Sn, 0-1% of Ti, 0-0.1% of Si and 0.001-0.3% of at lea... | 10/03/1989 |
| 4786470 | Aluminum-bronze dental alloy A new aluminum-bronze dental alloy and restoration technique is disclosed in which castability and burnishability are improved by the presence of 1 to 8 percent zinc.... | 11/22/1988 |
| 4750953 | Copper-base shape-memory alloys A copper-base shape-memory alloy consisting essentially of 15-35% Zn, 3.2-10% Al, 0.01-1% Si, at least one element selected from the group of 0.5-2% Ti, 0.01-1% Cr, 0.01-8% Mn, 0.01-2% Co and 2.1-4% Ni, the balance being Cu and incidental impurities, the ... | 06/14/1988 |
| 4749548 | Copper alloy lead material for use in semiconductor device Copper alloy lead materials used in the fabrication of semiconductor devices such as ICs and LSIs are required to have a tensile strength of 40 kgf/mm2 or more, an elongation of 4% or more, an electrical conductivity of 50% IACS or more, and a ... | 06/07/1988 |
| 4687633 | Lead material for ceramic package IC A lead material for ceramic package ICs which comprises Ni 1.0-5.0 wt %, Co 0.2-1.0 wt %, Si 0.2-1.5 wt %, Zn 0.1-5.0 wt %, Cr 0.001-0.1 wt %, and Mn 0.02-1.0 wt %, with the remainder being Cu and inevitable impurities. It does not cause cracking to the c... | 08/18/1987 |
| 4642146 | Alpha copper base alloy adapted to be formed as a semi-solid metal slurry A copper base alloy capable of forming a microstructure comprising a plurality of discrete particles in a surrounding metal matrix having a lower melting point than the particles. The alloy consists essentially of from about 3% to about 6% nickel, from ab... | 02/10/1987 |
| 4632806 | Copper alloy having high resistance to oxidation for use in leads on semiconductor devices A Cu alloy having high resistance to oxidation for use in leads on semiconductor devices is disclosed. The alloy consists essentially of 7-15 wt % Mn, 10-30 wt % Zn, 0.2-10 wt % Ni, 0.1-3 wt % Al, with the balance being Cu and incidental impurities. Also ... | 12/30/1986 |
| 4589938 | Single phase copper-nickel-aluminum-alloys Novel gold colored copper alloy compositions of single phase crystal structure possessing a combination of good cold and hot workability, excellent ductility and excellent corrosion, pitting, and tarnishing resistance. The compositions contain between abo... | 05/20/1986 |
| 4242132 | Copper base alloy containing manganese and nickle A copper base alloy having improved stress relaxation resistance consisting essentially of: about 15.0 to 31% zinc; about 1.0 to 5.0% aluminum; about 0.1 to less than 1.0% nickel; about 1.1 to 8% manganese; and the balance essentially copper.... | 12/30/1980 |
| 4191564 | Brass having superior adhesion and wear resistant properties A brass suitable for use as the material of such mechanical parts which are required to have good adhesion and wear resistant properties such as for gears of various machines, rolls and dies for use in pipe forming and deep drawing titanium plate material... | 03/04/1980 |
