Patents by Inventor Kensuke Matsuki
Kensuke Matsuki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230191481Abstract: A metal powder capable of producing a dust core having a high saturation magnetic flux density, excellent rust resistance, and a low iron loss. The metal powder includes from 1.0% to 15.0% of Si, from 1.0% to 13.0% of Cr, from 10 ppm to 10000 ppm of Cl, from 100 ppm to 10000 ppm of S (sulfur), and from 0.2% to 7.0% of O (oxygen) by mass concentration, the remainder including Fe and unavoidable impurities, in which the average particle diameter of the metal powder is from 0.1 ?m to 2.0 ?m. This facilitates the production of a dust core having a high magnetic flux density, excellent rust resistance, and a low iron loss.Type: ApplicationFiled: April 20, 2021Publication date: June 22, 2023Applicant: JFE MINERAL COMPANY, LTD.Inventors: Kensuke MATSUKI, Hiroshi YAMANE, Daiki FUKUDOME
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Publication number: 20210065212Abstract: A date generation apparatus 2000 acquires the date information 20 regarding the target product 10 and the rule condition indicating the condition regarding the generation rule 40. The generation rule 40 is a rule for generating a character string 30 to be attached to the target product 10 from the date information 20. The date generation apparatus 2000 acquires the generation rule 40 corresponding to the rule condition. Then, the date generation apparatus 2000 uses the generation rule 40 to generate the character string 30 from the date information 20.Type: ApplicationFiled: August 25, 2020Publication date: March 4, 2021Applicant: NEC CorporationInventors: Kensuke MATSUKI, Masahito SAKAI
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Publication number: 20070193410Abstract: A copper alloy powder for an electrically conductive paste is provided, which is characterized in that the copper alloy powder comprises 80 to 99.9 mass % of Cu and 0.1 to 20 mass % of one or two elements selected from the group consisting of Ta and W and has an average particle size of 0.1 to 1 ?m. This copper alloy powder has a higher starting temperature for sintering, higher oxidation resistance and better heat resistance than a copper powder.Type: ApplicationFiled: April 10, 2007Publication date: August 23, 2007Applicant: KAWATETSU MINING CO., LTDInventor: Kensuke Matsuki
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Patent number: 7244286Abstract: A copper alloy powder for an electrically conductive paste is provided, which is characterized in that the copper alloy powder comprises 80 to 99.9 mass % of Cu and 0.1 to 20 mass % of one or two elements selected from the group consisting of Ta and W and has an average particle size of 0.1 to 1 ?m. This copper alloy powder has a higher starting temperature for sintering, higher oxidation resistance and better heat resistance than a copper powder.Type: GrantFiled: November 28, 2002Date of Patent: July 17, 2007Assignee: Kawatetsu Mining Co., LtdInventor: Kensuke Matsuki
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Patent number: 7175688Abstract: A Ni—Fe based alloy powder of the present invention contains not less than 90% by a combined mass of Ni and Fe and homogeneously has particles having an average particle diameter from 0.1 to 1 ?m, and an average value of mass ratio Fe/(Fe+Ni) from 15% to 25% both inclusive, wherein the ratio of a maximum value X and a minimum value Y of Fe/(Fe+Ni), which are found at individual points in the region ranging from the center of any particle of the alloy powder to locations apart by 0.9 fold of the particle radius therefrom, X/Y is from 1 to 2. By producing a sintered part using this Ni—Fe based alloy powder as a raw material powder, it is possible to obtain electronic circuit parts which are homogenous and have high magnetic permeability.Type: GrantFiled: December 26, 2002Date of Patent: February 13, 2007Assignee: Kawatetsu Mining Co., Ltd.Inventor: Kensuke Matsuki
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Patent number: 6966196Abstract: A refrigeration unit using ammonia aimed to reduce the amount of charged ammonia, and to establish a measure to render leaked ammonia gas harmless, is provided. The ammonia chiller unit comprises a compressor, a compressor driving motor, an evaporation type condenser, an expansion valve, an evaporator to perform refrigerating cycle using ammonia as a refrigerant. The unit is composed of a lower construction body comprising a compressor, a motor for driving the compressor, a control board, a brine cooler to function as an evaporator, a brine pump, a water tank, a sprinkler pump, etc., and an upper construction body comprising a drain pan and an evaporation type condenser located above the drain pan. The evaporation type condenser is composed of a multitubular heat exchanger having at both end sides an inlet and outlet headers, ammonia refrigerant flowing in one direction, and the multitubular heat exchanger is incline downward from the inlet side toward the evaporator.Type: GrantFiled: December 30, 2003Date of Patent: November 22, 2005Assignee: Mayekawa Mfg. Co., Ltd.Inventors: Kensuke Matsuki, Takashi Nemoto, Tsutomu Kikuchi
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Publication number: 20050138947Abstract: A refrigeration unit using ammonia aimed to reduce the amount of charged ammonia, and to establish a measure to render leaked ammonia gas harmless, is provided. The ammonia chiller unit comprises a compressor, a compressor driving motor, an evaporation type condenser, an expansion valve, an evaporator to perform refrigerating cycle using ammonia as a refrigerant. The unit is composed of a lower construction body comprising a compressor, a motor for driving the compressor, a control board, a brine cooler to function as an evaporator, a brine pump, a water tank, a sprinkler pump, etc., and an upper construction body comprising a drain pan and an evaporation type condenser located above the drain pan. The evaporation type condenser is composed of a multitubular heat exchanger having at both end sides an inlet and outlet headers, ammonia refrigerant flowing in one direction, and the multitubular heat exchanger is incline downward from the inlet side toward the evaporator.Type: ApplicationFiled: December 30, 2003Publication date: June 30, 2005Applicant: Mayekawa Mfg. Co., Ltd.Inventors: Kensuke Matsuki, Takashi Nemoto, Tsutomu Kikuchi
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Publication number: 20050142027Abstract: A copper alloy powder for an electrically conductive paste is provided, which is characterized in that the copper alloy powder comprises 80 to 99.9 mass % of Cu and 0.1 to 20 mass % of one or two elements selected from the group consisting of Ta and W and has an average particle size of 0.1 to 1 ?m. This copper alloy powder has a higher starting temperature for sintering, higher oxidation resistance and better heat resistance than a copper powder.Type: ApplicationFiled: November 28, 2002Publication date: June 30, 2005Inventor: Kensuke Matsuki
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Publication number: 20050005734Abstract: A Ni—Fe based alloy powder of the present invention contains not less than 90% by a combined mass of Ni and Fe and homogeneously has particles having an average particle diameter from 0.1 to 1 ?m, and an average value of mass ratio Fe/(Fe+Ni) from 15% to 25% both inclusive, wherein the ratio of a maximum value X and a minimum value Y of Fe/(Fe+Ni), which are found at individual points in the region ranging from the center of any particle of the alloy powder to locations apart by 0.9 fold of the particle radius therefrom, X/Y is from 1 to 2. By producing a sintered part using this Ni—Fe based alloy powder as a raw material powder, it is possible to obtain electronic circuit parts which are homogenous and have high magnetic permeability.Type: ApplicationFiled: December 26, 2002Publication date: January 13, 2005Inventor: Kensuke Matsuki
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Patent number: 6273967Abstract: An amorphous alloy having a boron content of about 6 to 10 at %, cast into a plate, wherein the plate thickness is about 15 to 25 &mgr;m, and the surface roughness Ra0.8 of the plate is about 0.8 &mgr;m or less.Type: GrantFiled: January 29, 1997Date of Patent: August 14, 2001Assignee: Kawasaki Steel CorporationInventors: Kensuke Matsuki, Fumio Kogiku, Nobuo Shiga, Masao Yukumoto
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Patent number: 5833769Abstract: A wide amorphous alloy thin strip having a width of 70 mm or above and useful as an iron core of electric power transformers, composed of Fe--Si--B--C amorphous alloy. Dispersion of an amorphous structure in the width direction is prevented and deterioration of the strip properties is suppressed by adding Mn or by casting in an atmosphere containing a carbonic acid gas in an amount of about 40 vol % or more to thereby control strip surface roughness to a center line average surface roughness of about 0.7 .mu.m or less.Type: GrantFiled: October 7, 1996Date of Patent: November 10, 1998Assignee: Kawasaki Steel CorporationInventors: Fumio Kogiku, Seiji Okabe, Kensuke Matsuki, Masao Yukumoto
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Patent number: 5765625Abstract: A method and apparatus for manufacturing an amorphous metal ribbon provides the following: jetting a molten metal from a nozzle, which has a slit-shaped opening, to a cooling roll, which rotates at a high speed, so as to form a puddle on the cooling roll; and spreading the puddle for rapid solidification. Additionally, the present invention provides at a position upstream from the puddle in a direction opposite the direction of rotation of the cooling roll, cleaning the surface of the cooling roll by blowing carbon dioxide gas to which ultrasonic vibration is applied.Type: GrantFiled: December 4, 1996Date of Patent: June 16, 1998Assignee: Kawasaki Steel CorporationInventors: Masao Yukumoto, Kensuke Matsuki, Nobuo Shiga, Hitoshi Ogo
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Patent number: 5658397Abstract: An iron-based amorphous alloy thin strip for wound transformers has a composition expressed by a chemical formula:Fe.sub.a B.sub.b Si.sub.c Mn.sub.dwhere about 78.ltoreq.a.ltoreq. about 82 at %, about 8.ltoreq.b.ltoreq. about 15 at %, 4.ltoreq.c.ltoreq. about 14 at %, and about 0.2.ltoreq.d.ltoreq. about 1.0 at %. The ratio (building factor) of the iron loss of a wound core obtained from the above-described alloy thin strip to the iron loss of a single strip is about 1.5 or below.Type: GrantFiled: July 26, 1995Date of Patent: August 19, 1997Assignee: Kawasaki Steel CorporationInventors: Fumio Kogiku, Masao Yukumoto, Kensuke Matsuki
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Patent number: 5626690Abstract: A low boron amorphous alloy having excellent soft magnetic characteristics, composed of B: about 6-10 at %, Si: about 10-17 at %, P: about 0.02-2 at % and the balance Fe and incidental impurities. The invention lowers production costs because the content of expensive boron is reduced.Type: GrantFiled: August 28, 1995Date of Patent: May 6, 1997Assignee: Kawasaki Steel CorporationInventors: Kensuke Matsuki, Masao Yukumoto, Fumio Kogiku