Patents by Inventor Hiroki Iwasa
Hiroki Iwasa 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: 20170204521Abstract: A coated steel sheet includes a corrosion-resistant coating composed of at least one layer selected from the group consisting of a Ni layer, a Sn layer, an Fe—Ni alloy layer, an Fe—Sn alloy layer, and an Fe—Ni—Sn alloy layer disposed on at least one surface of a steel sheet, and an adhesive coating disposed on the corrosion-resistant coating, the adhesive coating containing Zr and further containing at least one metal element selected from the group consisting of Co, Fe, Ni, V, Cu, Mn, and Zn, in total, at a ratio by mass of 0.01 to 10 with respect to Zr. The coated steel sheet has excellent humid resin adhesion and corrosion resistance, in which streaky surface defects do not occur.Type: ApplicationFiled: March 31, 2017Publication date: July 20, 2017Applicant: JEF STEEL CORPORATIONInventors: Yuka Miyamoto, Takeshi Suzuki, Hiroki Iwasa, Norihlko Nakamura, Masao Inose, Hisato Noro, Yoichi Tobiyama
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Patent number: 9580816Abstract: Provided are an apparatus for continuous electrolytic treatment of a steel sheet that is suitable for producing a surface-treated steel sheet and a method for producing the surface-treated steel sheet using the apparatus for continuous electrolytic treatment of a steel sheet. The apparatus includes N pairs of tabular electrodes having a length L and being arranged to respectively face two surfaces of a steel sheet. Each electrode includes n sections arranged in the longitudinal direction of the electrode and disposed on the surface of the electrode facing the steel sheet surface. Each section is constituted by a conductive portion including an electrode portion having a length T1 and a nonconductive portion made by making an electrode portion having a length T2 nonconductive, where n×N?10, 0.96?T2/(T1+T2)?0.05, and 0.9?T1/L?0.1.Type: GrantFiled: September 14, 2011Date of Patent: February 28, 2017Assignee: JFE Steel CorporationInventors: Yuka Miyamoto, Takeshi Suzuki, Hisato Noro, Masao Inose, Hiroki Iwasa, Norihiko Nakamura, Yoichi Tobiyama
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Publication number: 20160339921Abstract: Control device for continuously variable transmission has continuously variable transmission mechanism (CVT) transmitting power with belt (7) wound around primary and secondary pulley (5, 6); torque convertor (2) having pump impeller (20), turbine runner (21) and lock-up clutch (2a); and control unit (10) controlling lock-up clutch (2a) to predetermined engagement state and controlling the CVT to predetermined transmission ratio, according to travelling condition.Type: ApplicationFiled: January 7, 2015Publication date: November 24, 2016Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Seiichiro TAKAHASHI, Hiroki IWASA, Hironori MIYAISHI, Sunghoon WOO, Takaaki MATSUI, Tomoaki HONMA, Yoshio YASUI, Yuta SUZUKI, Masayuki MANNEN, Susumu SAITOU
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Publication number: 20160263644Abstract: A laminated steel sheet for a two-piece can body with a high strain level satisfying the following formulae, the polyester resin layer composing the laminated steel sheet having a center line surface roughness (Ra) of 0.2 ?m to 1.8 ?m: r1?r, 0.1?r1/R?0.25, and 1.5?h/(R?r)?4 wherein h is the height of the two-piece can body, r is the maximum radius, r1 is the minimum radius, and R is the radius of the circular laminated steel sheet before forming having the same weight as the can body.Type: ApplicationFiled: May 19, 2016Publication date: September 15, 2016Inventors: Yasuhide OSHIMA, Junichi KITAGAWA, Hiroki IWASA, Katsumi KOJIMA, Hiroshi KUBO
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Patent number: 9441310Abstract: A method of manufacturing a tin-plated steel sheet includes forming an Sn-containing plating layer on at least one surface of a steel sheet so that the mass per unit area of Sn is 0.05 to 20 g/m2; forming a first chemical conversion coating by immersing the steel sheet in a first chemical conversion solution containing tetravalent tin ions and phosphate ions or cathodically electrolyzing the steel sheet in the first chemical conversion solution; forming a second chemical conversion coating after forming the first chemical conversion coating without drying the steel sheet by immersing the steel sheet in a second chemical conversion solution containing 5 to 200 g/L of aluminum phosphate monobasic and having a pH of 1.5 to 2.4 or cathodically electrolyzing the steel sheet in the second chemical conversion solution; and drying the steel sheet.Type: GrantFiled: December 18, 2013Date of Patent: September 13, 2016Assignee: JFE Steel CorporationInventors: Takeshi Suzuki, Norihiko Nakamura, Hiroki Iwasa
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Patent number: 9434372Abstract: A starting control apparatus for a hybrid vehicle capable of stabilizing and controlling the amount of torque transmitted by the clutch during engine start up. The hybrid vehicle includes a first clutch disposed between an engine and a motor/generator, and an engaging pressure is supplied to the first clutch from a line pressure regulating valve to a line pressure circuit into which a mechanical oil pump delivers operating fluid. A starting control section that performs the starting control in which the clutch is engaged, torque is input to the engine, and the engine is started in response to an engine start request while traveling in EV mode, is provided with a start determining section that executes starting control when the transmission input torque input to a belt-type continuously variable transmission exceeds a preset input torque based on the operating fluid pressure.Type: GrantFiled: October 3, 2013Date of Patent: September 6, 2016Assignee: NISSAN MOTOR CO., LTD.Inventor: Hiroki Iwasa
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Publication number: 20160214601Abstract: A hybrid vehicle control device is provided for controlling a drive system. The hybrid vehicle control device is programmed to perform an engine start control using a motor/generator as an engine start motor when an engine start request is present. The hybrid vehicle control device includes a second clutch control section and an engine start control section. The second clutch control section completely disengages the second clutch. The engine start control section engages or slip engages of the first clutch, and performs engine start control resulting from performing an engine cranking operation, injecting air and fuel and igniting same. The hybrid vehicle control module disengages the first clutch and engages the second clutch during coasting/regenerating driving with the motor/generator while traveling in an electric vehicle mode when the engine start request is due to a driver input for an increase in a required driving force.Type: ApplicationFiled: October 8, 2013Publication date: July 28, 2016Inventors: Ryosuke ITO, Takao ANDO, Hiroki IWASA
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Publication number: 20150239452Abstract: A starting control apparatus for a hybrid vehicle capable of stabilizing and controlling the amount of torque transmitted by the clutch during engine start up. The hybrid vehicle includes a first clutch disposed between an engine and a motor/generator, and an engaging pressure is supplied to the first clutch from a line pressure regulating valve to a line pressure circuit into which a mechanical oil pump delivers operating fluid. A starting control section that performs the starting control in which the clutch is engaged, torque is input to the engine, and the engine is started in response to an engine start request while traveling in EV mode, is provided with a start determining section that executes starting control when the transmission input torque input to a belt-type continuously variable transmission exceeds a preset input torque based on the operating fluid pressure.Type: ApplicationFiled: October 3, 2013Publication date: August 27, 2015Inventor: Hiroki Iwasa
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Patent number: 9079239Abstract: A method of manufacturing an easy open end includes the steps of using a laminated steel sheet with resin films formed on both surfaces of the laminated steel sheet, and forming a panel structure and a score. A score die used for forming the score includes a scoring edge having a cross section in which a tip is a curve and two sides with the tip interposed therebetween are tangent to the curve. The tip is the curve having a curvature radius ranging from 0.2 to 0.4 mm, and the two sides have elevation angles ? in a range of 0.3?tan ??1.0 to an end surface. The panel structure is formed by a motion that is synchronous with a motion in which the score die is pressed to a surface of the laminated steel sheet during the formation of the score.Type: GrantFiled: November 26, 2009Date of Patent: July 14, 2015Assignee: JFE Steel CorporationInventors: Katsumi Kojima, Hiroshi Kubo, Yoichiro Yamanaka, Masaki Tada, Hiroki Iwasa
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Patent number: 9034119Abstract: A component composition contains, by % by mass, 0.0016 to 0.01% of C, 0.05 to 0.60% of Mn, and 0.020 to 0.080% of Nb so that the C and Nb contents satisfy the expression, 0.4?(Nb/C)×(12/93)?2.5. In addition, the amount of Nb-based precipitates is 20 to 500 ppm by mass, the average grain diameter of the Nb-based precipitates is 10 to 100 nm, and the average crystal grain diameter of ferrite is 6 to 10 ?m. Nb is added to ultra-low-carbon steel used as a base, and the amount and grain diameter of the Nb-based precipitates are controlled to optimize the pinning effect. Grain refinement of ferrite is achieved by specifying the Mn amount, thereby achieving softening and excellent resistance to surface roughness of steel.Type: GrantFiled: March 25, 2010Date of Patent: May 19, 2015Assignee: JFE Steel CorporationInventors: Yusuke Nakagawa, Masaki Tada, Katsumi Kojima, Hiroki Iwasa
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Publication number: 20150107326Abstract: A method of DI forming a laminated metal sheet includes drawing a laminated metal sheet; and redrawing and ironing the drawn laminated metal sheet, wherein a water-based coolant including (a) at least one base selected from the group consisting of alkanolamines and alkali metal hydroxides, (b) a fatty acid, and (c) water is used in the redrawing and ironing, and wherein a total content of the base (a) and the fatty acid (b) is 0.02 to 4% by mass and a ratio of a straight-chain fatty acid having a carbon number of 6 to 12 in the fatty acid (b) is 80 to 100% by mass.Type: ApplicationFiled: December 22, 2014Publication date: April 23, 2015Inventors: Yasuhide Oshima, Masaki Tada, Hiroki Iwasa, Katsumi Kojima, Junichi Kitagawa, Yoshihiko Yasue, Toshikazu Ikeda, Tomohiro Kanokogi, Takeyoshi Fukuda
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Patent number: 9011609Abstract: An ironing apparatus includes an ironing die and an ironing punch, an injection port for injecting gas or liquid to the metal plate at a high pressure to remove substance adhered to the metal plate therefrom, a suction port for sucking the adhered substance removed from the metal plate, and a protrusion mount portion with a protrusion for preventing dispersion of the gas or the liquid. An ironing method for ironing the metal plate having the single surface or both surfaces coated with the organic resin film includes the steps of injecting the gas or the liquid from the injection port to the metal plate at the high pressure to remove the adhered substance from the metal plate, and sucking and collecting the adhered substance removed from the metal plate from the suction port. The adhered substance such as the hair may be removed by the aforementioned invention.Type: GrantFiled: March 19, 2009Date of Patent: April 21, 2015Assignee: JFE Steel CorporationInventors: Yusuke Nakagawa, Masaki Tada, Katsumi Kojima, Yasuhide Oshima, Hiroki Iwasa
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Patent number: 9005375Abstract: A steel sheet for cans containing 0.0060 to 0.01 mass % C and 0.02 to 0.12 mass % Nb and having the following characteristics: (i) an average ferrite grain size in a cross section in the rolling direction in a region from a surface layer of the steel sheet to a position ¼ of a sheet thickness away from the surface layer of the steel sheet is 7 ?m to 10 ?m or less, and (ii) an average ferrite grain size in a cross section in the rolling direction in a region from the position ¼ of a sheet thickness away from the surface layer of the steel sheet to a sheet thickness center portion of the steel sheet is 15 ?m or less, wherein the average ferrite grain size (1) is smaller than the average ferrite grain size (2).Type: GrantFiled: October 26, 2010Date of Patent: April 14, 2015Assignee: JFE Steel CorporationInventors: Yusuke Nakagawa, Masaki Tada, Katsumi Kojima, Hiroki Iwasa
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Patent number: 8962538Abstract: A DI forming water-based coolant of a laminated metal sheet includes at least one kind of base (a) selected from alkanolamines and alkali metal hydroxides, a fatty acid (b), and water (c), wherein the total content of the base (a) and the fatty acid (b) is 0.02 to 4% by mass and the ratio of a straight-chain fatty acid having a carbon number of 6 to 12 in the fatty acid (b) is 80 to 100% by mass.Type: GrantFiled: May 26, 2009Date of Patent: February 24, 2015Assignees: JFE Steel Corporation, Nippon Quaker Chemical, Ltd.Inventors: Yasuhide Oshima, Masaki Tada, Hiroki Iwasa, Katsumi Kojima, Junichi Kitagawa, Yoshihiko Yasue, Toshikazu Ikeda, Tomohiro Kanokogi, Takeyoshi Fukuda
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Publication number: 20150000798Abstract: A method of manufacturing a high-strength steel sheet includes, on a mass percent basis, 0.03%-0.10% C, 0.01%-0.5% Si, 0.001%-0.100% P, 0.001%-0.020% S, 0.01%-0.10% Al, 0.005%-0.012% N, the balance being Fe and incidental impurities, and microstructures that do not contain a pearlite microstructure, wherein, when Mnf=Mn [% by mass]?1.71×S [% by mass], Mnf is 0.3 to 0.6, including: forming a slab by vertical-bending type continuous casting or bow type continuous casting, wherein surface temperature of a slab corner in a region where the slab undergoes bending deformation or unbending deformation is 800° C. or lower, or 900° C. or higher; forming a steel sheet by hot-rolling the slab followed by cold rolling; annealing the steel sheet after the cold rolling; and skinpass rolling at a draft of 3% or less after the annealing.Type: ApplicationFiled: September 16, 2014Publication date: January 1, 2015Inventors: Takumi Tanaka, Katsumi Kojima, Makoto Aratani, Hiroki Iwasa
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Patent number: 8905256Abstract: A resin-coated metal sheet includes resin layers formed on both surfaces thereof and composed of a polyester as a main component, wherein the resin layer covering the inner surface of a container after the formation thereof has an interfacial free energy with water of 30 mN/m or more. The container formed from the resin-coated metal sheet exhibits an excellent content release property for contents with a high protein content.Type: GrantFiled: July 26, 2006Date of Patent: December 9, 2014Assignee: JFE Steel CorporationInventors: Yoichiro Yamanaka, Junichi Kitagawa, Yoshihiko Yasue, Yasuhide Oshima, Hiroshi Kubo, Hiroki Iwasa, Shinsuke Watanabe, Katsunori Nakai
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Patent number: 8877348Abstract: It is an object to provide a surface-treated steel sheet which contains no Cr, which is excellent in wet resin adhesion, and which can be used as an alternative to a conventional tin-free steel sheet and to provide a resin-coated steel sheet produced by coating the surface-treated steel sheet with resin. A surface-treated steel sheet including an adhesive layer which is disposed on at least one surface of the steel sheet and which contains Ti and at least one selected from the group consisting of Co, Fe, Ni, V, Cu, Mn, and Zn, the ratio of the total amount of Co, Fe, Ni, V, Cu, Mn, and Zn to the amount of Ti contained therein being 0.01 to ten on a mass basis, and a method for producing the surface-treated steel sheet.Type: GrantFiled: October 30, 2008Date of Patent: November 4, 2014Assignee: JFE Steel CorporationInventors: Yuka Nishihara, Takeshi Suzuki, Noriko Makiishi, Takumi Tanaka, Hiroki Iwasa, Norihiko Nakamura, Kaoru Sato, Takashi Kawano
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Patent number: 8871038Abstract: A tinned steel sheet includes an Sn-containing plating layer disposed on at least one surface of a steel sheet and in which mass per unit area of Sn is 0.05 to 20 g/m2; a first chemical conversion coating disposed on the Sn-containing plating layer and contains P and Sn, and in which mass per unit area of P is 0.3 to 10 mg/m2; a second chemical conversion coating disposed on the first chemical conversion coating and contains P and Al, and in which mass per unit area of P is 1.2 to 10 mg/m2 and mass per unit area of Al is 0.24 to 8.7 mg/m2; and a silane coupling agent-treating layer formed with the silane coupling agent disposed on the second chemical conversion coating and has a mass per unit area of Si of 0.10 to 100 mg/m2.Type: GrantFiled: July 2, 2009Date of Patent: October 28, 2014Assignee: JFE Steel CorporationInventors: Takeshi Suzuki, Norihiko Nakamura, Hiroki Iwasa
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Patent number: 8828512Abstract: There is provided a laminated metal sheet used for making a highly processed two-piece can body which endures harsh conditions such as retort treatment, and a two-piece can body made of the laminated steel sheet. A laminated metal sheet for a two-piece can body, including a metal sheet having a polyester resin film layer on each side of the metal sheet, the polyester resin film layer to be the outside of the can body having a crystallization temperature of 60 to 100° C., and the surface of the polyester resin film layer having a center line surface roughness (Ra) of 0.2 to 1.8 ?m. The polyester resin film layer to be the outside of the can body is preferably composed of 40 to 100% by mass of a resin composed mainly of butylene terephthalate and 0 to 60% by mass of a resin composed mainly of ethylene terephthalate.Type: GrantFiled: February 5, 2009Date of Patent: September 9, 2014Assignee: JFE Steel CorporationInventors: Yasuhide Oshima, Masaki Tada, Hiroki Iwasa, Katsumi Kojima, Yoichiro Yamanaka, Yoshihiko Yasue
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Patent number: 8827850Abstract: When the vehicle is stationary, the gear ratio is shifted to a Low side by controlling the position of a shift actuator such that a shift control valve is controlled to a position in which a first oil pressure shifts toward a neutral position side by a predetermined amount from a maximum discharge side position and a controlling secondary pulley pressure control unit to increase a second oil pressure to a predetermined oil pressure.Type: GrantFiled: May 22, 2009Date of Patent: September 9, 2014Assignees: JATCO Ltd, Nissan Motor Co., Ltd.Inventors: Yoshihisa Kodama, Kazuya Okamoto, Hiroki Iwasa, Hiroyasu Tanaka