Tokyo, Japan

Furukawa Electric Co., Ltd. is a Japanese electric and electronics equipment company. The company was founded by Furukawa Ichibei in 1884 in Yokohama when a copper-smelting facilityand a wire manufacturing factory were established. Furukawa was a Japanese businessman who founded one of the fifteen largest industrial conglomerates in Japan, called Furukawa zaibatsu, to which Furukawa Electric belongs to this day. The company is listed on the Tokyo stock Exchane and is constituent of the Nikkei 225 stock index.Furukawa Electric aids CERN's experiments on the search for the Higgs boson with its superconducting magnet wires. The company's products also include superconductivity cables.As of July 2013 the company has 137 subsidiaries and affiliate companies across Japan, Europe, North and South America. Wikipedia.


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Patent
Furukawa Electric Group and Furukawa Automotive Systems Inc. | Date: 2016-11-29

An electrical contact material (10) having: a conductive substrate (1) formed from copper or a copper alloy; a first intermediate layer (2) provided on the conductive substrate (1); a second intermediate layer (3) provided on the first intermediate layer (2); and an outermost layer (4) formed from tin or a tin alloy and provided on the second intermediate layer (3), wherein the first intermediate layer (2) is constructed as one layer of grains extending from the conductive substrate (1) side to the second intermediate layer (3) side, and wherein, in the first intermediate layer (2), the density of grain boundaries (5b) extending in a direction in which the angle formed by the grain boundary in interest and the interface between the conductive substrate and the first intermediate layer is 45 or greater, is 4 m/m^(2 )or less; a method of producing the same; and a terminal.


A resin composition for sealing an organic electronic device element, containing a polyisobutylene resin (A), a hydrogenated cyclic olefin resin (B), and a polymer (C) obtained by any one of radical polymerization, anionic polymerization or coordination polymerization and exhibiting rubber elasticity, a resin sheet using the same, organic electroluminescent element, and image display apparatus.


Patent
Furukawa Electric Group and Furukawa Magnet Wire Co. | Date: 2016-12-02

An insulated wire which comprises an aluminum conductor, having: an adhesion layer formed by directly baking, on the aluminum conductor, varnish containing a carboxy group; an insulation layer as an outer layer of the adhesion layer; and a reinforcement insulation layer as an outer layer of the insulation layer; and a method of producing the same.


An aluminum alloy conductor wire has a composition comprising Mg: 0.1-1.0 mass %, Si: 0.1-1.20 mass %, Fe: 0.01-1.40 mass %, Ti: 0-0.100 mass %, B: 0-0.030 mass %, Cu: 0-1.00 mass %, Ag: 0-0.50 mass %, Au: 0-0.50 mass %, Mn: 0-1.00 mass %, Cr: 0-1.00 mass %, Zr: 0-0.50 mass %, Hf: 0-0.50 mass %, V: 0-0.50 mass %, Sc: 0-0.50 mass %, Co: 0-0.50 mass %, Ni: 0-0.50 mass %, and the balance: Al and inevitable impurities, where Ti, B, Cu, Ag, Au, Mn, Cr, Zr, Hf, V, Sc, Co and Ni are arbitrary additive components of which at least one component may be contained or none of the components may be contained. A density of a compound having a particle size of 0.5-5.0 m and containing Fe is 1 to 300 particles/10000 m^(2).


A production method of an optical fiber preform includes: a preparatory step of preparing: a plurality of bar-shaped first preforms; and a plurality of second preforms including through holes having substantially same shape with a shape of outer periphery of a cross section of the first preform, the cross section being orthogonal to a major axis of the first preform; and an assembly step of matching the through holes of the second preforms to make communication holes, and inserting, through each of the communication holes, at least two of the first preforms arranged side by side in a direction of the major axis such that the second preforms and the first preforms are fitting each other. In at least one position in the direction of the major axis of the communication holes, a position where the second preforms contact with each other differs from a position where the first preforms contact with each other. Hereby the production method is provided that is capable of producing an optical fiber preform that is long and highly precise in positions of the core portions or the like at a low cost.


Provided is an aluminum alloy conductor wire used as a conductor of an electrical wiring structure that has improved crimping reliability while ensuring an excellent strength. An aluminum alloy conductor wire having a composition comprising Mg: 0.1 mass% to 1.0 mass%, Si: 0.1 mass% to 1.20 mass%, Fe: 0.01 mass% to 1.40 mass%, Ti: 0 mass% to 0.100 mass%, B: 0 mass% to 0.030 mass%, Cu: 0 mass% to 1.00 mass%, Ag: 0 mass% to 0.50 mass%, Au: 00 mass% to 0.50 mass%, Mn: 0 mass% to 1.00 mass%, Cr: 0 mass% to 1.00 mass%, Zr: 0 mass% to 0.50 mass%, Hf: 0 mass% to 0.50 mass%, V: 0 mass% to 0.50 mass%, Sc: 0 mass% to 0.50 mass%, Co: 0 mass% to 0.50 mass%, Ni: 0 mass% to 0.50 mass%, and the balance: Al and inevitable impurities, where Ti, B, Cu, Ag, Au, Mn, Cr, Zr, Hf, V, Sc, Co and Ni are arbitrary additive components of which at least one component may be contained or none of the components may be contained. A density of a compound having a particle size of 0.5 to 5.0 m and containing Fe is 1 to 300 particles/10000 m^(2).


Patent
Furukawa Electric Group | Date: 2017-01-18

A semiconductor laser device includes a well layer and a barrier layer formed of a III-V group semiconductor crystal containing As as a primary component. A V group element other than As has been introduced at a concentration of 0.02 to 5% into a V group site of the III-V group semiconductor crystal in at least one of the well layer and the barrier layer. A III group site of the III-V group semiconductor crystal in at least one of the well layer and the barrier layer contains Al. A semiconductor laser device suppressing generation of defects in a bulk of a semiconductor crystal and having less variation of characteristics is thereby provided.


In order to provide a superconducting wire rod connection structure having high connection strength and large superconducting critical current density, a connection structure (100), in which respective connection ends of first and second superconducting wire rods (10A, 10B) in each of which a superconducting conductor layer (3) is formed on one surface of a substrate (1) with an intermediate layer (2) therebetween are connected, has a configuration in which the respective substrates of the first and second superconducting wire rods are joined by welding, a connection wire rod (10C) having a superconducting conductor layer (3C) is laid between the superconducting conductor layers of the first and second superconducting wire rods, and a separation part (6) formed by the connection ends and the connection wire rod being separate from each other is provided between the connection ends of the first and second superconducting wire rods joined by joining parts of the substrates and the connection wire rod.


An insulated wire having a conductor coated with at least one layer of an insulating material, and having at least one layer of a bubble layer in a thickness direction in a coating layer, wherein the insulated wire has a part in which a thickness is small in a length direction or a circumferential direction in an identical coating layer; a method of producing the same; a method of producing a stator for a rotating electrical machine; and the rotating electrical machine.


Patent
Furukawa Electric Group and Furukawa Magnet Wire Co. | Date: 2017-04-12

An insulated wire which uses an aluminum conductor, having: an adhesion layer formed by directly baking, on the aluminum conductor, varnish containing a carboxy group; an insulation layer as an outer layer of the adhesion layer; and a reinforcement insulation layer as an outer layer of the insulation layer; and a method of producing the same.

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