Patents by Inventor Akinari Nakayama
Akinari Nakayama 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: 11488744Abstract: A molded cable comprises a conductor, an insulation inner layer, an insulation outer layer, and a resin molded body. The insulation inner layer comprises a crosslinked ethylene resin composition and is provided an outer circumference of the conductor. The insulation outer layer comprises a crosslinked thermoplastic polyurethane composition and is provided on an outer circumference of the insulation inner layer. Arithmetic average roughness (Ra) of a surface of the insulation outer layer is 5 ?m to 100 ?m. The resin molded body coats an exposed end portion of the conductor and an end portion of the insulation outer layer at a side of the exposed end portion of the conductor. The resin molded body is fused to the insulation outer layer.Type: GrantFiled: October 7, 2016Date of Patent: November 1, 2022Assignee: Hitachi Metals, Ltd.Inventors: Keisuke Sugita, Akinari Nakayama
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Patent number: 11230651Abstract: An adhesive film includes a resin film; and an adhesive layer provided on the resin film. The adhesive layer includes a resin composition including 2 parts by mass or more of an epoxy resin including two or more epoxy groups in molecules and having epoxy equivalents of 300 g/eq or less, per 100 parts by mass of an amorphous resin, which is soluble to a solvent and has a plurality of carboxyl groups in molecules, and which has a glass transition temperature of 100° C. or less and an acid value of 5 KOHmg/g or more. A flat wiring member includes a conductor and the adhesive film as described above.Type: GrantFiled: November 7, 2017Date of Patent: January 25, 2022Assignee: HITACHI METALS, LTD.Inventors: Daisuke Shanai, Akinari Nakayama, Kenichi Murakami, Kazuhiko Sasada, Masanobu Yamanobe
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Publication number: 20200248026Abstract: A method for producing a molding article includes preparing an insulated wire including an outermost layer disposed on an outer periphery of a conductor, the outermost layer including a resin composition including a fluorine-containing elastomer. The resin composition includes a tetrafluoroethylene-propylene copolymer and an ethylene-tetrafluoroethylene copolymer as an entire base polymer or a portion of the base polymer at a mass ratio of the tetrafluoroethylene-propylene copolymer to the ethylene-tetrafluoroethylene copolymer in a range of 100:0 to 60:40. The resin composition further includes 5 to 60 parts by mass of calcium carbonate and/or silica as an inorganic filler with respect to 100 parts by mass of the base polymer.Type: ApplicationFiled: April 3, 2020Publication date: August 6, 2020Inventors: Atsuro Yaguchi, Akinari Nakayama
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Patent number: 10497489Abstract: A cable includes a conductor, an insulation coating layer on the conductor, and an outer coating layer on the insulation coating layer. The insulation coating layer is made of a composition containing 100 parts by mass of a base polymer (A) and 100 to 250 parts by mass of a non-halogen flame retardant. The polymer (A) contains 70% to 99% by mass of an ethylene-vinyl acetate copolymer (a1) containing an ethylene-vinyl acetate copolymer having a melting point of 70° C. or higher, and 1% to 30% by mass of an acid-modified polyolefin resin (a2) having a glass transition point of ?55° C. or lower. The polymer (A) contains 25% to 50% by mass of a vinyl acetate component derived from the copolymer (a1). The outer coating layer is made of a composition containing 100 parts by mass of a base polymer (B) and 150 to 220 parts by mass of a non-halogen flame retardant.Type: GrantFiled: September 30, 2015Date of Patent: December 3, 2019Assignee: HITACHI METALS, LTD.Inventors: Makoto Iwasaki, Motoharu Kajiyama, Yoshiaki Nakamura, Hiroshi Okikawa, Mitsuru Hashimoto, Kenichiro Fujimoto, Akinari Nakayama
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Patent number: 10451496Abstract: A pressure-sensitive sensor includes a long hollow insulation that is elastically deformable and includes a hollow portion extending continuously in a longitudinal direction, a plurality of electrode wires that are provided along the inner peripheral surface of the hollow portion throughout the longitudinal length and are arranged facing each other with a distance therebetween so as to come into contact with each other when bent with elastic deformation of the hollow insulation, each electrode wire being formed by providing a conductive cover around a conductor, and an outer layer formed to cover an outer surface of the hollow insulation. The hollow insulation includes an insulating composition (A) including a styrene-based thermoplastic elastomer (a1). The outer layer including an insulating composition (C) including a thermoplastic polyurethane (c1) and an acid-modified polymer (c2) that is modified with an unsaturated carboxylic acid or a derivative thereof.Type: GrantFiled: December 14, 2017Date of Patent: October 22, 2019Assignee: HITACHI METALS, LTD.Inventors: Keisuke Sugita, Akinari Nakayama
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Patent number: 10431348Abstract: A pressure sensor includes an insulator having a hollow portion; and a plurality of electrical conductors that have been disposed apart from each other along the inner surface facing the hollow portion of the insulator. The insulator comprises an insulating resin composition made of a material which does not need cross-linking, the plurality of electrical conductors comprise an electroconductive resin composition made of a material which does not need cross-linking, the insulating resin composition and the electroconductive resin composition comprise a process oil, and a mass percentage concentration of the process oil in the electroconductive resin composition is higher than a mass percentage concentration of the process oil in the insulating resin composition.Type: GrantFiled: April 17, 2018Date of Patent: October 1, 2019Assignee: HITACHI METALS, LTD.Inventors: Akinari Nakayama, Takashi Aoyama
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Publication number: 20190237215Abstract: Bendability of an insulated wire having a separator layer interposed between a conductor and an insulating layer is improved. The insulated wire has a conductor; a separator layer formed of separator tapes wound on the conductor; and an insulating layer arranged on a periphery of the separator layer. The separator tape is spirally wound so that width-directional parts of the separator tapes are overlapped with one another, and a plurality of overlapped portions at which the width-directional parts of the separator tapes are overlapped with one another to be three- or more-layered exist in a longitudinal direction of the conductor.Type: ApplicationFiled: November 29, 2018Publication date: August 1, 2019Inventors: Akira SETOGAWA, Akinari NAKAYAMA
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Patent number: 10319490Abstract: There is provided an elastomer composition having both of a flexibility and a wear resistance at a low temperature, while having a high conductivity, and containing an elastomer component (A) including styrene-based thermoplastic elastomer (a1) and propylene-based elastomer (a2); and containing 10 pts.mass or more and 100 pts.mass or less of a conductivity imparting agent (B), and 10 pts.mass or more and 300 pts.mass of less of a process oil (C) based on 100 pts.mass of the elastomer component (A).Type: GrantFiled: September 30, 2016Date of Patent: June 11, 2019Assignee: HITACHI METALS, LTD.Inventors: Keisuke Sugita, Akinari Nakayama
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Publication number: 20180277280Abstract: [Problem] To provide: an electroconductive resin composition which can be produced at low cost and is suitable as a material for the electrical conductors of a pressure sensor; and a pressure sensor including electrical conductors constituted of the electroconductive resin composition. [Solution] The present invention provides a pressure sensor (1) which includes an insulator (10) having a hollow portion (13) and a plurality of electrical conductors (11) that have been disposed apart from each other along the inner surface facing the hollow portion (13) of the insulator (10), the plurality of electrical conductors (11) comprising an electroconductive resin composition that includes both a styrene-based thermoplastic elastomer and carbon.Type: ApplicationFiled: April 17, 2018Publication date: September 27, 2018Inventors: Akinari NAKAYAMA, Takashi AOYAMA
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Publication number: 20180180495Abstract: A pressure-sensitive sensor includes a long hollow insulation that is elastically deformable and includes a hollow portion extending continuously in a longitudinal direction, a plurality of electrode wires that are provided along the inner peripheral surface of the hollow portion throughout the longitudinal length and are arranged facing each other with a distance therebetween so as to come into contact with each other when bent with elastic deformation of the hollow insulation, each electrode wire being formed by providing a conductive cover around a conductor, and an outer layer formed to cover an outer surface of the hollow insulation. The hollow insulation includes an insulating composition (A) including a styrene-based thermoplastic elastomer (a1). The outer layer including an insulating composition (C) including a thermoplastic polyurethane (c1) and an acid-modified polymer (c2) that is modified with an unsaturated carboxylic acid or a derivative thereof.Type: ApplicationFiled: December 14, 2017Publication date: June 28, 2018Inventors: Keisuke Sugita, Akinari Nakayama
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Patent number: 9991022Abstract: [Problem] To provide: an electroconductive resin composition which can be produced at low cost and is suitable as a material for the electrical conductors of a pressure sensor; and a pressure sensor including electrical conductors constituted of the electroconductive resin composition. [Solution] The present invention provides a pressure sensor (1) which includes an insulator (10) having a hollow portion (13) and a plurality of electrical conductors (11) that have been disposed apart from each other along the inner surface facing the hollow portion (13) of the insulator (10), the plurality of electrical conductors (11) comprising an electroconductive resin composition that includes both a styrene-based thermoplastic elastomer and carbon.Type: GrantFiled: March 18, 2014Date of Patent: June 5, 2018Assignee: HITACHI METALS, LTD.Inventors: Akinari Nakayama, Takashi Aoyama
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Publication number: 20180057720Abstract: An adhesive film includes a resin film; and an adhesive layer provided on the resin film. The adhesive layer comprises a resin composition including 2 parts by mass or more of an epoxy resin including two or more epoxy groups in molecules and having epoxy equivalents of 300 g/eq or less, per 100 parts by mass of an amorphous resin, which is soluble to a solvent and has a plurality of carboxyl groups in molecules, and which has a glass transition temperature of 100° C. or less and an acid value of 5 KOHmg/g or more. A flat wiring member includes a conductor and the adhesive film as described above.Type: ApplicationFiled: November 7, 2017Publication date: March 1, 2018Inventors: Daisuke SHANAI, Akinari NAKAYAMA, Kenichi MURAKAMI, Kazuhiko SASADA, Masanobu YAMANOBE
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Patent number: 9882307Abstract: A molded electric wire is composed of a conductor wire, an insulating member coating a circumference of the conductor wire, including a thermoplastic polyurethane, and having an arithmetic average surface roughness of not smaller than 5 ?m and not greater than 100 ?m, and a molded resin part directly coating a terminal of the insulating member.Type: GrantFiled: February 23, 2016Date of Patent: January 30, 2018Assignee: HITACHI METALS, LTD.Inventors: Keisuke Sugita, Akinari Nakayama
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Publication number: 20170327708Abstract: An insulated wire includes an outermost layer including a resin composition including a fluorine-containing elastomer. A ratio of C?O bond to C—C bond (C?O/C—C) on a surface of the outermost layer is not less than 0.5. The resin composition further includes a tetrafluoroethylene-propylene copolymer and an ethylene-tetrafluoroethylene copolymer as the entire base polymer or a portion of the base polymer at a mass ratio ((of the tetrafluoroethylene-propylene copolymer) to (the ethylene-tetrafluoroethylene copolymer)) in a range of 100:0 to 60:40. The resin composition further includes 5 to 60 parts by mass of calcium carbonate and/or silica as an inorganic filler with respect to 100 parts by mass of the base polymer. The resin composition is cross-linked.Type: ApplicationFiled: April 26, 2017Publication date: November 16, 2017Inventors: Atsuro YAGUCHI, Akinari NAKAYAMA
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Patent number: 9640299Abstract: A crosslinked resin compound includes a resin compound including 0.1 to 20 parts by mass of one material selected from the group consisting of monomer having an epoxy group, acid anhydride and silane coupling agent with respect to 100 parts by mass of ethylene-based copolymer, and the resin compound is crosslinked.Type: GrantFiled: December 24, 2013Date of Patent: May 2, 2017Assignee: HITACHI METALS, LTD.Inventors: Keisuke Sugita, Akinari Nakayama
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Publication number: 20170103828Abstract: A molded cable comprises a conductor, an insulation inner layer, an insulation outer layer, and a resin molded body. The insulation inner layer comprises a crosslinked ethylene resin composition and is provided an outer circumference of the conductor. The insulation outer layer comprises a crosslinked thermoplastic polyurethane composition and is provided on an outer circumference of the insulation inner layer. Arithmetic average roughness (Ra) of a surface of the insulation outer layer is 5 ?m to 100 ?m. The resin molded body coats an exposed end portion of the conductor and an end portion of the insulation outer layer at a side of the exposed end portion of the conductor. The resin molded body is fused to the insulation outer layer.Type: ApplicationFiled: October 7, 2016Publication date: April 13, 2017Inventors: Keisuke SUGITA, Akinari NAKAYAMA
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Publication number: 20170098488Abstract: There is provided an elastomer composition having both of a flexibility and a wear resistance at a low temperature, while having a high conductivity, and containing an elastomer component (A) including styrene-based thermoplastic elastomer (a1) and propylene-based elastomer (a2); and containing 10 pts.mass or more and 100 pts.mass or less of a conductivity imparting agent (B), and 10 pts.mass or more and 300 pts.mass of less of a process oil (C) based on 100 pts.mass of the elastomer component (A).Type: ApplicationFiled: September 30, 2016Publication date: April 6, 2017Inventors: Keisuke SUGITA, Akinari NAKAYAMA
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Publication number: 20170025199Abstract: [Problem] To provide: an electroconductive resin composition which can be produced at low cost and is suitable as a material for the electrical conductors of a pressure sensor; and a pressure sensor including electrical conductors constituted of the electroconductive resin composition. [Solution] The present invention provides a pressure sensor (1) which includes an insulator (10) having a hollow portion (13) and a plurality of electrical conductors (11) that have been disposed apart from each other along the inner surface facing the hollow portion (13) of the insulator (10), the plurality of electrical conductors (11) comprising an electroconductive resin composition that includes both a styrene-based thermoplastic elastomer and carbon.Type: ApplicationFiled: March 18, 2014Publication date: January 26, 2017Inventors: Akinari NAKAYAMA, Takashi AOYAMA
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Patent number: 9449741Abstract: A coaxial cable includes a center conductor, an insulating foam provided to cover an outer periphery of the center conductor, and a protruding portion provided around an outer surface of the insulating foam to absorb stress. The protruding portion has a waved shape that oscillates in a circumferential direction of the insulating foam.Type: GrantFiled: June 16, 2014Date of Patent: September 20, 2016Assignee: HITACHI METALS, LTD.Inventors: Masahiro Abe, Sohei Kodama, Akinari Nakayama
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Publication number: 20160254615Abstract: A molded electric wire is composed of a conductor wire, an insulating member coating a circumference of the conductor wire, including a thermoplastic polyurethane, and having an arithmetic average surface roughness of not smaller than 5 ?m and not greater than 100 ?m, and a molded resin part directly coating a terminal of the insulating member.Type: ApplicationFiled: February 23, 2016Publication date: September 1, 2016Inventors: Keisuke SUGITA, Akinari NAKAYAMA