Patents Assigned to Kitagawa Industries Co., Ltd.
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Patent number: 10287472Abstract: A thermally conductive material according to the present invention is prepared by allowing silicon carbide having an average particle size of 10 ?m or more and less than 50 ?m, aluminum hydroxide having an average particle size of 1 ?m or more and less than 10 ?m, and magnesium hydroxide having an average particle size of 0.5 ?m or more and less than 1 ?m to be contained in a polymer obtained by polymerizing a monomer containing acrylic acid ester.Type: GrantFiled: June 26, 2014Date of Patent: May 14, 2019Assignee: KITAGAWA INDUSTRIES CO., LTD.Inventors: Yasuhiro Kawaguchi, Takashi Mizuno
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Publication number: 20190127550Abstract: A thermally conductive sheet including: an acrylic polymer; a high-soda alumina in an amount of 70 to 75% by volume; and a magnesium hydroxide having a particle size smaller than a particle size of the high-soda alumina in an amount of 2.7 to 5.3% by volume, the magnesium hydroxide is coated with a higher fatty acid. The thermally conductive sheet has a compressive force required in a deformation with a compressibility of 20% or less of 200 N or less, and has a thermal resistance of 0.45°C./W or less.Type: ApplicationFiled: March 29, 2017Publication date: May 2, 2019Applicant: KITAGAWA INDUSTRIES CO., LTD.Inventors: Takashi MIZUNO, Yasuhiro KAWAGUCHI
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Publication number: 20190127621Abstract: Provided is a thermally conductive elastomer composition excellent in thermal conductivity, insulation property, low hardness property, moldability, and the like. [Solving Means] The thermally conductive elastomer composition of the present invention including: a styrene-based elastomer in an amount of 100 parts by mass; a process oil in an amount of 800 to 1,000 parts by mass including a petroleum-based hydrocarbon; an aluminum hydroxide powder in an amount of 240 to 290 parts by mass; and an artificial graphite powder in a platelike form with an average particle size of 8 ?m to 30 ?m, or a natural graphite powder in a flake form or a vein form with an average particle size of 8 ?m to 30 ?m, in an amount of 270 to 400 parts by mass.Type: ApplicationFiled: November 2, 2017Publication date: May 2, 2019Applicant: KITAGAWA INDUSTRIES CO., LTD.Inventor: Tatsuya UCHIDA
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Patent number: 10251296Abstract: A clip is provided with a base portion, at least one holding portion, and a guiding portion. The holding portion includes spring pieces including a first and second spring pieces connected to the base portion and facing each other, and sandwiches an insert inserted between these spring pieces. The guiding portion includes a contact surface that guides the insert toward a position between the first and second spring pieces when the insert moves in an insertion direction and the guide portion comes into contact with the insert. The contact surface is at least partially in a position farther away from the base portion than the second portion of at least one of the first or second spring pieces. The contact surface is at least partially, in relation to a facing direction, in a position farther away from the corresponding spring piece than the second portion of the one spring piece.Type: GrantFiled: December 22, 2016Date of Patent: April 2, 2019Assignee: Kitagawa Industries Co., Ltd.Inventor: Tatsuya Nakamura
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Patent number: 10205429Abstract: An object is to provide an output-noise reduction device that can prevent noise from an electronic device accommodated in a metal casing from being transmitted due to electromagnetic coupling. An output voltage is extracted to the outside through a conducting bar. A magnetic body core includes a through hole through which the conducting bar is inserted. A chip capacitor is mounted on a mounting board and connects between the output terminal VO and ground potential. A section from the output terminal VO to at least part of the chip capacitor mounted on the mounting board is isolated from the electromagnetic coupling from the electronic device. Thus, noise is prevented from being transmitted to the output terminal VO.Type: GrantFiled: September 21, 2016Date of Patent: February 12, 2019Assignee: KITAGAWA INDUSTRIES CO., LTD.Inventors: Tomokazu Tanimizu, Kazushige Ueno, Katsuyuki Morita, Yoshinori Ohashi
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Patent number: 10200005Abstract: An object is to provide an output-noise reduction device in which a component encapsulated through insert molding can be appropriately protected. In a noise filter module (output-noise reduction device), a conducting bar and a magnetic body core are protected with a molded member formed through insert molding. The molded member is formed of a resin material with a molding shrinkage rate of 0.5% or less. Thus, the amount of shrinkage after the molded member is molded and stress as a result of the shrinkage can be made small, whereby damage on the magnetic body core, deformation of a lead frame, and the like can be prevented from occurring.Type: GrantFiled: September 20, 2016Date of Patent: February 5, 2019Assignee: KITAGAWA INDUSTRIES CO., LTD.Inventors: Tomokazu Tanimizu, Kazushige Ueno, Katsuyuki Morita
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Publication number: 20190014676Abstract: A clip is provided with a base portion, at least one holding portion, and a guiding portion. The holding portion includes spring pieces including a first and second spring pieces connected to the base portion and facing each other, and sandwiches an insert inserted between these spring pieces. The guiding portion includes a contact surface that guides the insert toward a position between the first and second spring pieces when the insert moves in an insertion direction and the guide portion comes into contact with the insert. The contact surface is at least partially in a position farther away from the base portion than the second portion of at least one of the first or second spring pieces. The contact surface is at least partially, in relation to a facing direction, in a position farther away from the corresponding spring piece than the second portion of the one spring piece.Type: ApplicationFiled: December 22, 2016Publication date: January 10, 2019Applicant: Kitagawa Industries Co., Ltd.Inventor: Tatsuya NAKAMURA
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Publication number: 20190003787Abstract: Provided is a thermally conductive liquid pack including a liquid thermal conductive material and a hollow pliable outer package filled with the liquid thermal conductive material, the pliable outer package having a first contact surface and a second contact surface different from the first contact surface and being in a closed state, the pliable outer package including a first sheet including the first contact surface, a second sheet including the second contact surface and disposed opposite to the first sheet, the first sheet and the second sheet including a plurality of fine discharge holes capable of discharging the thermal conductive material, a release sheet configured to seal the discharged holes from the outside being releasably layered on the first sheet and the second sheet, and the second sheet including a third sheet formed from a non-woven fabric or mesh in the inside thereof.Type: ApplicationFiled: June 27, 2018Publication date: January 3, 2019Applicant: KITAGAWA INDUSTRIES CO., LTD.Inventors: Ken TANAKA, Hideo YUMI
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Patent number: 10165714Abstract: A noise current absorber including a pair of housing parts capable of housing each of the pair of magnetic bodies, wherein the pair of magnetic bodies forms an overall cylindrical shape or a ring shape when abutted against each other; an engaging portion and an engaged portion capable of maintaining a closed state of the pair of housing parts; and a wall molded integrally with at least a first housing part of the pair of housing parts, adjacent to an abutting surface of at least the first housing part against a second housing part of the pair of housing parts, the wall protruding to a side where the second housing part abuts.Type: GrantFiled: May 3, 2017Date of Patent: December 25, 2018Assignee: Kitagawa Industries Co., Ltd.Inventor: Hideharu Kawai
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Publication number: 20180345626Abstract: PROBLEM: To provide a cushioning material excelling in impact absorption with respect to a movable member and a receiving member. SOLUTION: The present invention provides a composite cushioning material installed on a receiving member to receive a movable member, the composite cushioning material including a high damping elastomer having a JIS-A hardness of 20 or greater and a loss factor of 2.0 or greater, and a low hardness elastomer disposed between the high damping elastomer and the receiving member and having an ASKER-FP hardness of 80 or less; and a ratio of thicknesses between the high damping elastomer and the low hardness elastomer being in a range from 4:1 to 1:4.Type: ApplicationFiled: May 30, 2018Publication date: December 6, 2018Applicant: KITAGAWA INDUSTRIES CO., LTD.Inventor: Shinya WASHINO
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Patent number: 10132575Abstract: The heat conduction member comprises a laminate formed by laminating a resin layer and a metal layer. The resin layer is formed from a thermally conductive resin material. The thickness of the laminate is smaller at the peripheral edge of the laminate than in the center portion of the laminate, and the thickness of the laminate is greater in the intermediate portion of the laminate than in the center portion of the laminate. An inclined surface is formed on the laminate so as to form a falling gradient from the intermediate portion toward the peripheral edge.Type: GrantFiled: March 28, 2017Date of Patent: November 20, 2018Assignee: KITAGAWA INDUSTRIES CO., LTD.Inventors: Takashi Mizuno, Hideo Yumi
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Patent number: 10118367Abstract: A thermal conducting sheet having a high adhesion between layers even if the thermal conducting sheet has a multilayer structure is provided. The thermal conducting sheet including a low-hardness layer and a reinforcing layer laminated on one side or both sides of the low-hardness layer. The reinforcing layer having a hardness greater than a hardness of the low-hardness layer. The low-hardness layer comprises: acrylic polymer, silicon carbide, aluminum hydroxide, magnesium hydroxide, and plasticizer.Type: GrantFiled: March 28, 2017Date of Patent: November 6, 2018Assignee: KITAGAWA INDUSTRIES CO., LTD.Inventor: Rika Oya
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Patent number: 10034364Abstract: An electronic circuit of the present invention includes: a circuit board on which an electronic component is mounted; a heat conducting sheet stacked on the electronic component; and a heat sink stacked on the heat conducting sheet. The heat sink includes a porous ceramics having a volume resistivity of 1010 Ohm·cm or more and a porosity of 15-50 vol %.Type: GrantFiled: April 21, 2016Date of Patent: July 24, 2018Assignees: Kitagawa Industries Co., Ltd., TYK CorporationInventors: Yasuhiro Kawaguchi, Masataka Kubo
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Publication number: 20180193799Abstract: A method of forming a reverse osmosis membrane 1 of the present invention includes a coating membrane forming step of forming a coating membrane which is soluble in a predetermined solvent on a surface of a porous support substrate 2 that is insoluble in the solvent, a carbon membrane forming step of forming a carbon membrane 3 on the coating membrane by a physical vapor deposition which deposits carbon as a target material under an atmosphere where rare gas and nitrogen gas are contained, and a removing-by-dissolving step of removing the coating membrane by dissolving the same in the solvent after formation of the carbon membrane 3.Type: ApplicationFiled: July 28, 2016Publication date: July 12, 2018Applicants: KITAGAWA INDUSTRIES CO., LTD., SHINSHU UNIVERSITYInventors: Hiroki KITANO, Akio YAMAGUCHI, Morinobu ENDO, Josue ORTIZ MEDINA
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Patent number: 10014610Abstract: A contact in one aspect of the present disclosure comprises a fixing portion, an elastic contact piece, and a pair of projecting tabs, which are formed as an integrated entity from a metal thin plate. The projecting tabs project from the fixing portion at positions on both sides of the elastic contact piece. A dimension of the elastic contact piece in a width direction, which matches the direction of an interval between the projecting tabs, is a first dimension. The projecting tabs are formed such that each projecting tab is a flat plate having the same thickness as the thin plate. The projecting tabs are arranged such that the thickness directions thereof are the same direction, in locations that have inner surfaces of the projecting tabs facing each other, and an interval between the inner surfaces is a second dimension greater than the first dimension.Type: GrantFiled: March 28, 2017Date of Patent: July 3, 2018Assignee: KITAGAWA INDUSTRIES, CO., LTD.Inventors: Tomohisa Kurita, Hideo Yumi
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Patent number: 9991610Abstract: A pair of solder bonding portions to be solder-bonded onto the printed wiring board and a contact portion to contact the different conductive member or the like are coupled by a pair of flat spring portions. The respective flat spring portions protrude from side surfaces of mutually opposed corners of the contact portion. Sections following protruded sections of the respective flat spring portions are bent so as to wind in the same direction around a pillar-shaped space obtained by projecting the contact portion downward, and the flat spring portions reach the corresponding solder bonding portions. When the contact portion is pressed by the conductive member, the contact portion and the solder bonding portions remain parallel to each other, whereby the contact member can be successfully flattened toward the printed wiring board. At this point, outward deformation of the flat spring portions is inhibited.Type: GrantFiled: June 8, 2016Date of Patent: June 5, 2018Assignee: KITAGAWA INDUSTRIES CO., LTD.Inventor: Tomohisa Kurita
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Patent number: 9976025Abstract: A thermally conductive material is provided. The thermally conductive material includes: a polymer containing a thermally conductive filler and an antioxidant; the polymer being a polymer of a monomer containing an acrylic ester, a hindered phenol-based antioxidant being contained as the antioxidant, a thermal conductivity being 3.2 W/m·K or greater, and an initial Asker C hardness at ambient temperature being 22 or less.Type: GrantFiled: October 29, 2015Date of Patent: May 22, 2018Assignee: KITAGAWA INDUSTRIES CO., LTD.Inventors: Takashi Mizuno, Yasuhiro Kawaguchi
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Patent number: 9976012Abstract: A method for producing a flame-retardance-imparting material comprises: a shredding step of shredding plant material containing stems and/or leaves of tomato plants and/or eggplant plants in a aqueous solvent; and an aqueous solvent removal step or removing the aqueous solvent from the plant material after shredding.Type: GrantFiled: August 20, 2015Date of Patent: May 22, 2018Assignees: KITAGAWA INDUSTRIES CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Yo Utsuno, Ichinori Shigematsu, Masako Seki
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Patent number: 9876364Abstract: This power receiving device includes a magnetic shield, and the magnetic shield includes: a first magnetic sheet located beside the power receiving unit; a conductive sheet located opposite to the power receiving unit with the first magnetic sheet interposed therebetween; and a second magnetic sheet located opposite to the first magnetic sheet with the conductive sheet interposed therebetween.Type: GrantFiled: March 13, 2015Date of Patent: January 23, 2018Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KITAGAWA INDUSTRIES CO., LTD.Inventors: Takashi Fujimaki, Akira Mori, Toru Matsuzaki, Taichi Ishihara
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Patent number: 9868889Abstract: A thermal conductive electromagnetic wave absorbing sheet to be provided includes: a polymer including acrylate ester as a monomer; a metal magnetic oxide; and flame retardant filler subjected to surface treatment. The metal magnetic oxide includes a small-diameter metal magnetic oxide with an average particle diameter of 1 to 10 ?m and a large-diameter metal magnetic oxide with an average particle diameter of 50 to 100 ?m. A mixing ratio between the small-diameter metal magnetic oxide and the large-diameter metal magnetic oxide is in a range of 9:13 to 15:7 in volume ratio. The small-diameter metal magnetic oxide and the large-diameter metal magnetic oxide are contained by 55 to 60 vol % in total in the entire thermal conductive electromagnetic wave absorbing sheet. The flame retardant filler subjected to the surface treatment is contained by 8 to 10 vol % in the entire thermal conductive electromagnetic wave absorbing sheet.Type: GrantFiled: October 30, 2015Date of Patent: January 16, 2018Assignee: Kitagawa Industries Co., Ltd.Inventors: Yasuhiro Kawaguchi, Takashi Mizuno