Patents by Inventor Takao Takeuchi
Takao Takeuchi 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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Patent number: 9680081Abstract: Problem There is proposed an innovative cross-sectional structure, with an idea contrary to the conventional one, utilizing the non-reactivity between Cu and Ta (or between Ag and Nb, Ta) in a high-temperature short-time heat treatment, thus achieving (1) the suppression of the low magnetic-field instability, (2) excellent wire drawability of a precursor wire, and (3) the reduction of the cost required for the incorporation of a stabilizer. Means for Resolution There is proposed a structure having an assembly of a plurality of single wires, wherein the assembly is covered with an outer cover (skin) formed from Nb or Ta, wherein each of the single wires has an Nb/Al composite filament region which is formed from a composite of Nb and Al mixed in an Nb:Al molar ratio of 3:1, and which is covered with a partition formed from Nb or Ta, and further covered with an interfilamentary barrier formed from Cu or Ag disposed around the partition.Type: GrantFiled: November 15, 2012Date of Patent: June 13, 2017Assignees: NATIONAL INSTITUTE FOR MATERIAL SCIENCE, INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION HIGH ENERGY ACCELERATOR RESEARCH ORGANIZATIONInventors: Takao Takeuchi, Kiyosumi Tsuchiya, Kazuhiko Nakagawa
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Patent number: 9037203Abstract: A composite barrier-type Nb3Al superconducting multifilament wire material comprises Nb barrier filaments, Ta barrier filaments, Nb bulk dummy filaments, and a Nb or Ta covering. In the composite barrier-type Nb3Al superconducting multifilament wire material, the Nb barrier filaments and Ta barrier filaments are disposed in the wire material so that the Nb barrier filaments are concentrated in a filament region near a core formed from the Nb bulk dummy filaments and only the Ta barrier filaments are disposed or the Nb barrier filaments are dispersed in the Ta barrier filaments in an outer layer portion formed from a region outside the Nb barrier filaments, excluding the Nb or Ta covering.Type: GrantFiled: January 13, 2012Date of Patent: May 19, 2015Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Nobuya Banno, Takao Takeuchi
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Publication number: 20130316909Abstract: A composite barrier-type Nb3Al superconducting multifilament wire material comprises Nb barrier filaments, Ta barrier filaments, Nb bulk dummy filaments, and a Nb or Ta covering. In the composite barrier-type Nb3Al superconducting multifilament wire material, the Nb barrier filaments and Ta barrier filaments are disposed in the wire material so that the Nb barrier filaments are concentrated in a filament region near a core formed from the Nb bulk dummy filaments and only the Ta barrier filaments are disposed or the Nb barrier filaments are dispersed in the Ta barrier filaments in an outer layer portion formed from a region outside the Nb barrier filaments, excluding the Nb or Ta covering.Type: ApplicationFiled: January 13, 2012Publication date: November 28, 2013Inventors: Nobuya Banno, Takao Takeuchi
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Patent number: 8531077Abstract: A stator coil production method using a plurality of shaping press pairs. A stator coil is made up of in-slot portions to be disposed in slots of a stator core and coil-end portions each of which extends every adjacent two of the in-slot portions. Each of the shaping press pairs has a die and a punch disposed on both sides of a conductor wire travel path. The method includes a first step of moving the die and the punch close to each other to shape a portion of a conductor wire into one of the coil-end portions, and a second step of bringing adjacent two of the shaping press pairs close to each other and simultaneously moving one of the adjacent two of the shaping press pairs in a direction perpendicular to the conductor wire to shape a portion of the conductor wire into one of the in-slot portion.Type: GrantFiled: May 13, 2011Date of Patent: September 10, 2013Assignee: Denso CorporationInventors: Yusuke Hara, Daisuke Okushita, Takao Takeuchi, Kiyokazu Futami, Satoshi Nakamura, Fumihiro Nakano
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Patent number: 8434212Abstract: A stator coil producing method and a stator coil production machine. The stator coil is used in an electric rotating machine. The stator coil production machine includes a rotary retainer which retains and moves shaping press pairs along a looped path to press or shape portions of a conductor wire into in-slot portions to be disposed in slots of a stator core and coil-end portions which extend outside the slots. The method comprises a coil-end portion shaping step of bringing press members of each of the shaping press pairs close to each other in sequence to shape the coil-end portions and an in-slot portion shaping step of advancing the shaping press pairs on the looped path in contact with the cam mechanism and also moving selected ones of the shaping press pairs in sequence in a direction perpendicular to the path to shape the in-slot portions.Type: GrantFiled: May 13, 2011Date of Patent: May 7, 2013Assignee: Denso CorporationInventors: Daisuke Okushita, Yusuke Hara, Takao Takeuchi, Kiyokazu Futami, Satoshi Nakamura, Fumihiro Nakano
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Patent number: 8387231Abstract: A stator coil producing method and a stator coil production machine. The stator coil is used in an electric rotating machine. The stator coil production machine includes a rotary retainer which rotates to move shaping press pairs along a looped path. The rotary retainer has retaining holes through which the shaping press pairs are retained. The retaining holes are shaped to permit the shaping press pairs to move along the looped path, thereby pressing or shaping portions of a conductor wire into in-slot portions to be disposed in slots of a stator core and coil-end portions each of which is to extend between adjacent two of the in-slot portions outside the slots. The method comprises an in-slot portion shaping step of shaping portions of the insulator-coated conductor wire into the in-slot portions and a coil-end portion shaping step of shaping portions of the insulator-coated conductor wire into the coil-end portions.Type: GrantFiled: May 12, 2011Date of Patent: March 5, 2013Assignee: Denso CorporationInventors: Daisuke Okushita, Yusuke Hara, Takao Takeuchi, Kiyokazu Futami, Satoshi Nakamura, Fumihiro Nakano
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Publication number: 20110277314Abstract: A stator coil producing method and a stator coil production machine. The stator coil is used in an electric rotating machine. The stator coil production machine includes a rotary retainer which rotates to move shaping press pairs along a looped path. The rotary retainer has retaining holes through which the shaping press pairs are retained. The retaining holes are shaped to permit the shaping press pairs to move along the looped path, thereby pressing or shaping portions of a conductor wire into in-slot portions to be disposed in slots of a stator core and coil-end portions each of which is to extend between adjacent two of the in-slot portions outside the slots. The method comprises an in-slot portion shaping step of shaping portions of the insulator-coated conductor wire into the in-slot portions and a coil-end portion shaping step of shaping portions of the insulator-coated conductor wire into the coil-end portions.Type: ApplicationFiled: May 12, 2011Publication date: November 17, 2011Applicant: DENSO CORPORATIONInventors: Daisuke OKUSHITA, Yusuke Hara, Takao Takeuchi, Kiyokazu Futami, Satoshi Nakamura, Fumihiro Nakano
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Publication number: 20110278980Abstract: A stator coil production method using a plurality of shaping press pairs. A stator coil is made up of in-slot portions to be disposed in slots of a stator core and coil-end portions each of which extends every adjacent two of the in-slot portions. Each of the shaping press pairs has a die and a punch disposed on both sides of a conductor wire travel path. The method includes a first step of moving the die and the punch close to each other to shape a portion of a conductor wire into one of the coil-end portions, and a second step of bringing adjacent two of the shaping press pairs close to each other and simultaneously moving one of the adjacent two of the shaping press pairs in a direction perpendicular to the conductor wire to shape a portion of the conductor wire into one of the in-slot portion.Type: ApplicationFiled: May 13, 2011Publication date: November 17, 2011Applicant: DENSO CORPORATIONInventors: Yusuke Hara, Daisuke Okushita, Takao Takeuchi, Kiyokazu Futami, Satoshi Nakamura, Fumihiro Nakano
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Publication number: 20110277315Abstract: A stator coil producing method and a stator coil production machine. The stator coil is used in an electric rotating machine. The stator coil production machine includes a rotary retainer which retains and moves shaping press pairs along a looped path to press or shape portions of a conductor wire into in-slot portions to be disposed in slots of a stator core and coil-end portions which extend outside the slots. The method comprises a coil-end portion shaping step of bringing press members of each of the shaping press pairs close to each other in sequence to shape the coil-end portions and an in-slot portion shaping step of advancing the shaping press pairs on the looped path in contact with the cam mechanism and also moving selected ones of the shaping press pairs in sequence in a direction perpendicular to the path to shape the in-slot portions.Type: ApplicationFiled: May 13, 2011Publication date: November 17, 2011Applicant: DENSO CORPORATIONInventors: Daisuke Okushita, Yusuke Hara, Takao Takeuchi, Kiyokazu Futami, Satoshi Nakamura, Fumihiro Nakano
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Patent number: 7938948Abstract: To develop stable, non-cyanide silver and silver alloy plating baths. The present invention is a silver and silver alloy plating bath, comprises: (A) a soluble salt, comprising a silver salt or a mixture of a silver salt and a salt of a metal selected from the group consisting of tin, bismuth, cobalt, antimony, iridium, indium, lead, copper, iron, zinc, nickel, palladium, platinum, and gold; and (B) at least one aliphatic sulfide compound comprising a functionality selected from the group consisting of an ether oxygen atom, a 3-hydroxypropyl group, and a hydroxypropylene group, with the proviso that the aliphatic sulfide compound does not comprise a basic nitrogen atom.Type: GrantFiled: September 3, 2009Date of Patent: May 10, 2011Assignees: Ishihara Chemical Co., Ltd., Daiwa Fine Chemicals Co., Ltd.Inventors: Kiyotaka Tsuji, Tetsuji Nishikawa, Takao Takeuchi, Keigo Obata, Hidemi Nawafune
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Publication number: 20100074824Abstract: Provided is a process for readily and efficiently producing monosilane which is industrially significantly useful.Type: ApplicationFiled: September 27, 2007Publication date: March 25, 2010Applicant: Denki Kagaku Kogyo Kabushiki KaishaInventors: Toshiaki Otsu, Takashi Tachiyama, Mineto Kobayashi, Kazuyuki Yubune, Takao Takeuchi, Yusuke Wakuda
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Patent number: 7669752Abstract: A flux contains resin having film forming ability, activator, solvent and at least one complex selected from silver complex and copper complex. The flux is used when soldering is performed onto a circuit having electroless nickel plating or further having gold plating on the electroless nickel plating. Allowing a barrier layer of silver or copper to deposit on the surfaces of lands suppresses the diffusion of nickel into the melted solder alloy during soldering, and also prevents phosphorous concentration. This improves the bonding strength of soldering and suppresses the reduction deposition of silver and/or copper to portions other than circuit patterns.Type: GrantFiled: June 22, 2007Date of Patent: March 2, 2010Assignee: Harima Chemicals, Inc.Inventors: Kazuki Ikeda, Shunsuke Ishikawa, Takaaki Anada, Keigo Obata, Takao Takeuchi, Naoya Inoue
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Publication number: 20090321269Abstract: To develop stable, non-cyanide silver and silver alloy plating baths. The present invention is a silver and silver alloy plating bath, comprises: (A) a soluble salt, comprising a silver salt or a mixture of a silver salt and a salt of a metal selected from the group consisting of tin, bismuth, cobalt, antimony, iridium, indium, lead, copper, iron, zinc, nickel, palladium, platinum, and gold; and (B) at least one aliphatic sulfide compound comprising a functionality selected from the group consisting of an ether oxygen atom, a 3-hydroxypropyl group, and a hydroxypropylene group, with the proviso that the aliphatic sulfide compound does not comprise a basic nitrogen atom.Type: ApplicationFiled: September 3, 2009Publication date: December 31, 2009Applicants: ISHIHARA CHEMICAL CO., LTD., DAIWA FINE CHEMICALS CO., LTD.Inventors: Kiyotaka TSUJI, Tetsuji NISHIKAWA, Takao TAKEUCHI, Keigo OBATA, Hidemi NAWAFUNE
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Patent number: 7628903Abstract: A silver and silver alloy plating bath, includes (A) a soluble salt, having a silver salt or a mixture of a silver salt and a salt of a metal such as tin, bismuth, indium, lead, and the like; and (B) a particular aliphatic sulfide compound, such as thiobis(diethyleneglycol), dithiobis(triglycerol), 3,3?-thiodipropanol, thiodiglycerin, 3,6-dithiooctane-1,8-diol, and the like, which contain at least one or more of an ether oxygen atom, a 1-hydroxypropyl group, a hydroxypropylene group, or two or more of a sulfide bond in the molecule, and not containing a basic nitrogen atom.Type: GrantFiled: May 2, 2000Date of Patent: December 8, 2009Assignees: Ishihara Chemical Co., Ltd., Daiwa Fine Chemicals Co., Ltd.Inventors: Kiyotaka Tsuji, Tetsuji Nishikawa, Takao Takeuchi, Keigo Obata, Hidemi Nawafune
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Patent number: 7354486Abstract: A composite multi-core wire rod in which a plurality of Al alloy wires containing 15 at % to 40 at % of Ge are arranged in Nb matrix at a core diameter of 2 ?m to 20 ?m is subjected to heating for at least five hours at a temperature ranging from 1300° C. to 1600° C.; and additionally heating at a temperature ranging from 650° C. to 900° C.Type: GrantFiled: July 15, 2004Date of Patent: April 8, 2008Assignee: National Institute for Materials ScienceInventors: Nobuya Banno, Takao Takeuchi
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Publication number: 20070241170Abstract: A flux contains resin having film forming ability, activator, solvent and at least one complex selected from silver complex and copper complex. The flux is used when soldering is performed onto a circuit having electroless nickel plating or further having gold plating on the electroless nickel plating. Allowing a barrier layer of silver or copper to deposit on the surfaces of lands suppresses the diffusion of nickel into the melted solder alloy during soldering, and also prevents phosphorous concentration. This improves the bonding strength of soldering and suppresses the reduction deposition of silver and/or copper to portions other than circuit patterns.Type: ApplicationFiled: June 22, 2007Publication date: October 18, 2007Inventors: Kazuki Ikeda, Shunsuke Ishikawa, Takaaki Anada, Keigo Obata, Takao Takeuchi, Naoya Inoue
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Patent number: 7134181Abstract: A superfine multi-core Nb3Al superconductive wire is produced by getting a Nb3Al superconductive wire ready which was obtained by subjecting a precursor wire having a superfine multi-core structure in which a plurality of Nb/Al complex cores are embedded in Nb, Ta, a Nb based dilute alloy, or a Ta based dilute alloy as the matrix to a rapid heating and quenching treatment comprising rapidly heating to a temperature range near 2,000° C. in 2 seconds, (A) coating the Nb3Al superconductive wire with Cu or Ag as the stabilizing material; then (B) subjecting to a hot isostatic press (HIP) process for 10 minutes or more in a inert gas environment with a pressure of 40 atmospheres or more; and then (C) subjecting heat treatment for 1–200 hours in temperature range of 680–850° C.Type: GrantFiled: December 25, 2003Date of Patent: November 14, 2006Assignee: National Institute for Materials ScienceInventors: Kiyoshi Inoue, Akihiro Kikuchi, Yasuo Iijima, Takao Takeuchi
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Publication number: 20060180246Abstract: A composite multi-core wire rod in which a plurality of Al alloy wires containing 15 at % to 40 at % of Ge are arranged in Nb matrix at a core diameter of 2 ?m to 20 ?M is subjected to heating for at least five hours at a temperature ranging from 1300° C. to 1600° C.; and additionally heating at a temperature ranging from 650° C. to 900° C.Type: ApplicationFiled: July 15, 2004Publication date: August 17, 2006Inventors: Nobuya Banno, Takao Takeuchi
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Publication number: 20060147683Abstract: A flux contains resin having film forming ability, activator, solvent, and at least one complex selected from silver complex and copper complex. The flux is used when soldering is performed onto a circuit having electroless nickel plating or further having gold plating on the electroless nickel plating. Allowing a barrier layer of silver or copper to deposit on the surfaces of lands suppresses the diffusion of nickel into the melted solder alloy during soldering, and also prevents phosphorous concentration. This improves the bonding strength of soldering and suppresses the reduction deposition of silver and/or copper to portions other than circuit patterns.Type: ApplicationFiled: December 30, 2004Publication date: July 6, 2006Inventors: Kazuki Ikeda, Shunsuke Ishikawa, Takaaki Anada, Keigo Obata, Takao Takeuchi, Naoya Inoue
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Publication number: 20050176587Abstract: A superfine multi-core Nb3Al superconductive wire is produced by getting a Nb3Al superconductive wire ready which was obtained by subjecting a precursor wire having a superfine multi-core structure in which a plurality of Nb/Al complex cores are embedded in Nb, Ta, a Nb based dilute alloy, or a Ta based dilute alloy as the matrix to a rapid heating and quenching treatment comprising rapidly heating to a temperature range near 2,000° C. in 2 seconds, (A) coating the Nb3Al superconductive wire with Cu or Ag as the stabilizing material; then (B) subjecting to a hot isostatic press (HIP) process for 10 minutes or more in a inert gas environment with a pressure of 40 atmospheres or more; and then (C) subjecting heat treatment for 1-200 hours in temperature range of 680-850° C.Type: ApplicationFiled: December 25, 2003Publication date: August 11, 2005Inventors: Kiyoshi Inoue, Akihiro Kikuchi, Yasuo Iijima, Takao Takeuchi