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| Number | Title | Issue Date |
| 7180176 | Radiation plate and power semiconductor module IC package Heat dissipating plate (4) made of copper-base alloy is proposed that exhibits high degree of flatness after joining in the step of assembling power semiconductor modules, IC packages, etc., that will not crack in the solder (3) joint if subjected to h... | 02/20/2007 |
| 7163753 | Arc-resistant terminal, arc-resistant terminal couple and connector or the like for automobile An arc-resistant terminal, couple, and connecter are provided. In an embodiment, a metal-based electrical contact portion thereof includes at least one of Cu, Ni or Sn, and not more than 0.06 mass % P, wherein the arc-resistant terminal capable of suppressing arc di... | 01/16/2007 |
| 6413649 | Silver-copper-nickel infiltration brazing filler metal and composites made therefrom The present invention is directed to brazing filler metals that can be used in the infiltration brazing of porous matrix materials without the need for a flux. The brazing filler metals contain two different Group II metals and a third metal of Group 9 an... | 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 |
| 6280541 | Seamless copper alloy tube for heat exchanger being excellent in 0.2% proof stress and fatigue strength A seamless pipe made of copper alloy consisting of, by weight % , a total amount of 0.02 to 0.2% of Co, 0.01 to 0.05% of P, 1 to 20 ppm of C if needed, and remainder Cu, and unavoidable impurities and, as said impurities, the total oxygen content is regul... | 08/28/2001 |
| 6241831 | Copper alloy The present invention relates to copper-magnesium-phosphorous alloys. In a first embodiment, copper-magnesium-phosphorous alloys in accordance with the present invention consist essentially of magnesium in an amount from about 0.01 to about 0.25% by weigh... | 06/05/2001 |
| 6197432 | Sliding material having excellent abrasion resistance A sliding material which is used for bearings, washers and other parts of automobiles, industrial machines, agricultural machines and the like, possesses an excellent abrasion resistance, and is useful under sever boundary lubricating conditions. The slid... | 03/06/2001 |
| 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 |
| 6093499 | Copper alloy foils Copper alloy foils are provided having far greater strength and heat resistance than conventional copper foils, and having better productivity, are characterized by a composition comprising, all by weight, from 0.01 to 0.4% Cr, from 0.01 to 0.25% Zr, from... | 07/25/2000 |
| 6093265 | Copper alloy having improved stress relaxation A copper alloy having improved resistance to stress relaxation contains controlled additions of iron, phosphorous and magnesium. Free magnesium, in solid solution with the copper, increases the alloy's resistance to stress relaxation. Copper alloys of the... | 07/25/2000 |
| 6083328 | Casting rolls made of hardenable copper alloy A hardenable copper alloy, suitable as a material for manufacturing casting rolls and casting wheels that are subjected to changing temperature stresses, is disclosed. The hardenable copper alloy comprises 1.0 to 2.6% nickel, 0.1 to 0.45% beryllium, and t... | 07/04/2000 |
| 5980656 | Copper alloy with magnesium addition A copper alloy achieves high electrical conductivity, in excess of 70% IACS; high strength, ultimate tensile strength in excess of 75 ksi; good surface cosmetics; and good stampability, above 25% break, by controlled additions of magnesium, iron and phosp... | 11/09/1999 |
| 5868877 | Copper alloy having improved stress relaxation A copper alloy having improved resistance to stress relaxation contains controlled additions of iron, phosphorous and magnesium. Free magnesium, in solid solution with the copper, increases the alloy's resistance to stress relaxation. Copper alloys of the... | 02/09/1999 |
| 5858125 | Magnetoresistive materials A magnetoresistive material of the present invention has a structure in which many clusters are surrounded by a crystal phase of Cu and/or Ag, where each cluster has a grain size of 20 nm or less and composed of an amorphous phase containing at least one ... | 01/12/1999 |
| 5489417 | Spray cast copper-manganese-zirconium alloys having reduced porosity Spray cast copper-manganese-zirconium alloys are disclosed. In one embodiment, the alloy is spray cast in nitrogen and contains from about 1 ppm to about 20 ppm of dissolved nitrogen. In a second embodiment, the alloy contains an addition selected from th... | 02/06/1996 |
| 5470373 | Oxidation resistant copper Oxidation resistant particles composed of copper and at least one metal having a valence of +2 or +3 and having an intermediate lattice energy for the metal in its hydroxide form. The metal is selected from nickel, cobalt, iron, manganese, cadmium, zinc, ... | 11/28/1995 |
| 5435828 | Cobalt-boride dispersion-strengthened copper A dispersion-strengthened copper alloy is disclosed having an exceptional combination of strength, ductility, and thermal conductivity. The copper alloy comprises: copper, 0.01 to 2.0 weight % boron and 0.1 to 6.0 weight % cobalt, and cobalt-boride disper... | 07/25/1995 |
| 5336342 | Copper-iron-zirconium alloy having improved properties and a method of manufacture thereof A copper based alloy and method for the manufacture thereof having improved properties. The copper alloy contains iron and zirconium with the iron being present as a uniformly dispersed second phase of the dispersoids. The dispersoids have a mean particle... | 08/09/1994 |
| 5259898 | Alloy for spectacle wire frames and electronic component parts An alloy, in particular for the manufacture of spectacle frames, and a spectacle wire or a spectacle frame and connecting wires for electronic component parts manufactured using the alloy of the invention. In order to obtain good mechanical characteristic... | 11/09/1993 |
| 5205878 | Copper-based electric and electronic parts having high strength and high electric conductivity Electric and electronic parts, including leadframes made of a copper-based alloy having high strength and high electric conductivity said copper-based alloy is produced by a process which comprises the steps of preparing a copper-based alloy consisting es... | 04/27/1993 |
| 5188799 | Wear-resistant copper-base alloy A wear-resistant copper-base alloy having superior self-lubricity includes, by weight %, Ni: 10.0 to 30.0%; Si: 0.5 to 3%; Co: 2.0 to 15.0%; at least one metal selected from the group consisting of Mo, W, Nb and V: 2.0 to 15.0%; and the balance being Cu and unavoid... | 02/23/1993 |
| 5149499 | Cooper-Fe-P-Nb alloys for electrical and electronic parts and its manufacturing process A cooper base alloy and process having high electrical conductivity. An alloy consists of from 0.005 to 0.15% by weight Niobium, about 0.005 to 0.15% by weight Iron, 0.01 to 0.05% by weight phosphorus, and the balance copper.... | 09/22/1992 |
| 5147469 | Process for producing copper-based alloys having high strength and high electric conductivity Copper-based alloys suitable for use as materials in fabricating electric and electronic parts as typified by leadframes and having high strength and high electric conductivity can be produced by a process which comprises the steps of preparing a copper-b... | 09/15/1992 |
| 5131958 | Method of hot forming beryllium-copper alloy and hot formed product thereof A method of hot forming beryllium-copper alloy including from 1.60 to 2.00% by weight of Be, from 0.2 to 0.35% by weight of Co and the balance being essentially Cu, under specified conditions of a working temperature, a working rate, and an amount of work... | 07/21/1992 |
| 5039478 | Copper alloys having improved softening resistance and a method of manufacture thereof A method for the manufacture of copper base alloys having improved resistance to thermally induced softening is provided. The alloy composition is selected so that the alloy undergoes either a peritectic or eutectic transformation during cooling. The soli... | 08/13/1991 |
| 5026433 | Grain refinement of a copper base alloy A method of producing a grain refined copper base alloy containing iron in the amount of less than 2.3% by weight and which is cast into an ingot by conventional direct chill casting. Calcium is added to the melt before casting, preferably in the form of ... | 06/25/1991 |
| 5026434 | Copper-iron-cobalt-titanium alloy with high mechanical and electrical characteristics and its production process A process for producing a Cu-Fe-Co-Ti alloy useful as conductor elements in the electronics and connector industries. The alloy is produced in the form of a bath having a Ti/Fe+Co ratio between 0.3 and 1 and a Co/Fe ratio between 0.10 and 0.90. The molten... | 06/25/1991 |
| 5004520 | Method of manufacturing film carrier There is provided a film carrier comprising a resin base film and a rolled copper foil laminated thereon, said rolled copper foil forming leads for mounting semiconductor chips or other electronic components in place, characterized in that said rolled cop... | 04/02/1991 |
| 4935056 | Wear-resistant copper-base sintered oil-containing bearing materials A wear-resistant copper-base sintered oil-containing bearing material having a structure which contains 2 to 11 % by weight of tin and 1 to 20 % by weight of cobalt and further includes 2 to 15 % by weight of at least one of molybdenum disulfide, graphite... | 06/19/1990 |
| 4734255 | Use of a copper-titanium-cobalt alloy as the material for electronic components The invention relates to the use of a copper-titanium-cobalt-alloy which consists of 0.05-0.6% titanium; 0.05-0.6% cobalt; remainder copper, whereby the cobalt is partially replaced by iron. Due to its excellent characteristics with respect to electrical ... | 03/29/1988 |
| 4710349 | Highly conductive copper-based alloy A highly conductive copper-based alloy containing 0.001 percent to 0.02 percent of tellurium, 0.05 percent to 0.3 percent of one element selected from iron and chromium, and 0 percent to 0.01 percent of phosphorous with the balance being copper and incide... | 12/01/1987 |
| 4661178 | Beta copper base alloy adapted to be formed as a semi-solid metal slurry and a process for making same A predominately beta phase copper base alloy which is adapted for forming in a semi-solid slurry condition. The alloy has a microstructure comprising discrete particles within a lower melting point matrix and consists essentially of from about 9% to about... | 04/28/1987 |
| 4634824 | Miniaturized electric contact assembly for microswitch A contact assembly for a microswitch has a contact material inserted into and calked in a hole formed in a base material which is a copper alloy having iron phosphide crystallized therein and having a chemical composition of 0.025 to 0.040% by weight of p... | 01/06/1987 |
| 4631237 | Wire electrode for spark-eroding systems A wire electrode for a spark-eroding system for erosion cutting of workpieces using intermittent electrical charges includes a core of a current-conducting material and a wire coating of a material with a lower evaporation temperature, for example zinc. T... | 12/23/1986 |
| 4605532 | Copper alloys having an improved combination of strength and conductivity A copper base alloy having an improved combination of conductivity and strength for applications such as lead frames or electrical connectors. The alloys consists essentially of from about 0.3 to 1.6% by weight iron, with up to one-half the iron content b... | 08/12/1986 |
| 4592891 | Corrosion-resistant copper alloy There is disclosed an excellently corrosion-resistant copper alloy suited for use in fabricating fins for heat exchangers, particularly for automobile radiators, which is substantially consisted of 0.005 to 0.1 wt % Pb and 0.01 to 1.0 wt % Co and the rema... | 06/03/1986 |
| 4585494 | Beta copper base alloy adapted to be formed as a semi-solid metal slurry and a process for making same A predominately beta phase copper base alloy which is adapted for forming in a semi-solid slurry condition. The alloy has a microstructure comprising discrete particles within a lower melting point matrix and consists essentially of from about 9% to about... | 04/29/1986 |
| 4559200 | High strength and high conductivity copper alloy A copper alloy excellent in general properties such as heat resistance, electric and heat conductivity and mechanical strength and suitable for use as materials for lead frames of electronic parts, heat exchanger fins, or the like can be obtained by optim... | 12/17/1985 |
| 4518662 | Copper solder containing cobalt Copper alloy solders are disclosed which contain 0.5 to 20% by weight of cobalt. The copper and cobalt may be arranged in heterogeneous phases.... | 05/21/1985 |
| 4427627 | Copper alloy having high electrical conductivity and high mechanical characteristics The present invention relates to a copper alloy, essentially comprising 0.10 to 0.50% by weight of cobalt, 0.04 to 0.25% by weight of phosphorus, the remainder being copper. It also relates to a process for the treatment of said alloys with a particular v... | 01/24/1984 |
