Patents by Inventor Nobuhiro Okada
Nobuhiro Okada 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: 20150371788Abstract: Provided is a lithium ion capacitor that is capable, during internal short circuiting, of suppressing an increase in capacitor temperature and controlling the onset of gasification, smoking and ignition, and of having preferably both low resistance (i.e., high output density) and high cycle characteristics. The lithium ion capacitor comprises an electrode laminated body stored in a casing together with a non-aqueous electrolytic solution containing a lithium ion-containing electrolyte; wherein the electrode laminated body is laminated so that a negative electrode collector having a negative electrode active material comprised of a carbon material, and a positive electrode body having a positive electrode active material face each other through a laminated separator where a polyolefin porous membrane and an insulating porous membrane are laminated; and characterized in that the insulating porous membrane is in contact with the negative electrode body.Type: ApplicationFiled: January 21, 2014Publication date: December 24, 2015Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Nobuhiro Okada, Osamu Saito, Kensuke Niimura
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Publication number: 20150311002Abstract: Provided is a nonaqueous lithium storage element which is obtained by housing an electrode body and a nonaqueous electrolyte solution containing a lithium salt in an outer case, said electrode body being composed of a negative electrode that is composed of a negative electrode collector and a negative electrode active material layer laminated on one or both surfaces of the negative electrode collector, a positive electrode that is composed of a positive electrode collector and a positive electrode active material layer laminated on one or both surfaces of the positive electrode collector, and a separator.Type: ApplicationFiled: December 5, 2013Publication date: October 29, 2015Applicant: Asahi Kasei Kabushiki KaishaInventors: Nobuhiro Okada, Takeshi Kamijo, Shiro Mori, Takashi Yamasaki, Akiko Kaneko
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Patent number: 9144840Abstract: The present invention provides an electromagnetic stirrer uniformly applying an electromagnetic force to each casting mold. The electromagnetic stirrer of the present invention includes a pair of electromagnetic coils including a casting mold(s) between them, wherein an inner winding is applied to outside of each of two of tooth provided to a core of each of the pair of electromagnetic coils, an outer winding is applied to outside of the inner windings, ways of applying current to be applied to the windings are changed depending on the distance of the electromagnetic coils, and the number of the casting molds n, the external size ?, and the width of each of the electromagnetic coils W are defined as n×?<W.Type: GrantFiled: August 27, 2013Date of Patent: September 29, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Tatsuhiko Ikeda, Nobuhiro Okada, Hiroshi Hayashi, Masahiro Yamazaki
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Publication number: 20150243449Abstract: Provided is a lithium ion capacitor that is safe and has a high energy density and a high output. Specifically provided is a lithium ion capacitor comprising, accommodated within an outer casing: an electrode stack obtained by stacking a negative electrode in which a negative-electrode active material layer including a carbon material as the negative-electrode active material is disposed on a negative-electrode collector, a separator comprising a polyethylene-containing polyolefin resin, and a positive electrode in which a positive-electrode active material layer including a positive-electrode active material layer comprising a carbon material or a carbonaceous material is disposed on a positive-electrode collector; and a non-aqueous electrolyte solution including a lithium ion-containing electrolyte.Type: ApplicationFiled: September 18, 2013Publication date: August 27, 2015Applicant: Asahi Kasei Kabushiki KaishaInventors: Nobuhiro Okada, Osamu Saito, Kensuke Niimura
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Publication number: 20150239028Abstract: Provided is a high frequency induction heating apparatus capable of quenching a workpiece having an outward flange, over the whole circumference by means of a frequency with which a penetration depth of an electromagnetic wave is larger than a sheet thickness of the workpiece. The high frequency induction heating apparatus includes a high frequency induction heating coil used for heating a long hollow steel workpiece having a closed cross section and an outward flange, in 3DQ in which a bending member is manufactured from the workpiece. The high frequency induction heating coil includes a magnetic material core facing each other between which both faces of the outward flange are interposed, having a distance from both faces, and an induction heating coil connected to the magnetic material core and arranged surrounding an outer circumference of a general portion where the outward flange is excluded from the workpiece.Type: ApplicationFiled: September 11, 2013Publication date: August 27, 2015Inventors: Nobuhiro Okada, Atsushi Tomizawa, Hiroaki Kubota
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Publication number: 20150225871Abstract: A SiC single crystal production apparatus is used in production of SiC single crystals by solution growth techniques. The apparatus includes: a seed shaft having a lower end surface to which a SiC seed crystal is to be attached; a crucible that contains a Si—C solution; a stirring member that is immersed in the Si—C solution; and drive sources that cause relative rotation between the crucible and the stirring member. The lower end of the stirring member is located lower than the lower end of the SiC seed crystal attached to the lower end surface of the seed shaft.Type: ApplicationFiled: September 2, 2013Publication date: August 13, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuhiko Kusunoki, Kazuhito Kamei, Nobuyoshi Yashiro, Nobuhiro Okada, Koji Moriguchi, Motohisa Kado, Hironori Daikoku, Hidemitsu Sakamoto
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Publication number: 20150225872Abstract: The production apparatus is used in production of single crystals by solution growth techniques. The production apparatus includes a seed shaft, a crucible, and a drive source. The seed shaft has a lower end surface to which a seed crystal is to be attached. The crucible contains a solution from which a single crystal is made. The drive source causes the crucible to rotate, and also varies the rotational speed of the crucible. The inner peripheral surface of the crucible includes a flow control surface which defines a non-circular cross-sectional shape. This single crystal production apparatus is capable of strongly stirring the solution contained in the crucible.Type: ApplicationFiled: August 30, 2013Publication date: August 13, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuhito Kamei, Kazuhiko Kusunoki, Nobuyoshi Yashiro, Nobuhiro Okada, Koji Moriguchi, Hironori Daikoku, Motohisa Kado, Hidemitsu Sakamoto
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Publication number: 20150191848Abstract: A production apparatus is used for a solution growth method. The production apparatus includes a seed shaft and a crucible. The seed shaft has a lower end surface to which an SiC seed crystal is attached. The crucible contains an SiC solution. The crucible includes a cylindrical portion, a bottom portion, and an inner lid. The bottom portion is disposed at a lower end of the cylindrical portion. The inner lid is disposed in the cylindrical portion. The inner lid has a through hole and is positioned below a liquid surface of the SiC solution when the SiC solution is contained in the crucible.Type: ApplicationFiled: July 15, 2013Publication date: July 9, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Nobuyoshi Yashiro, Kazuhito Kamei, Kazuhiko Kusunoki, Nobuhiro Okada, Koji Moriguchi, Hironori Daikoku, Hidemitsu Sakamoto, Motohisa Kado
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Publication number: 20150167196Abstract: Provided are: a high-quality SiC single crystal ingot that suppresses the generation of inclusions; and a production method for said SiC single crystal ingot. The present invention pertains to a SiC single crystal ingot including a seed crystal substrate and a SiC growth crystal grown using the solution method and using the seed crystal substrate as the origin thereof, the growth crystal having a recessed crystal growth surface and not including inclusions.Type: ApplicationFiled: May 8, 2013Publication date: June 18, 2015Inventors: Motohisa Kado, Hironori Daikoku, Hidemitsu Sakamoto, Kazuhiko Kusunoki, Nobuhiro Okada
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Publication number: 20150158079Abstract: The present invention provides an electromagnetic stirrer uniformly applying an electromagnetic force to each casting mold. The electromagnetic stirrer of the present invention includes a pair of electromagnetic coils including a casting mold(s) between them, wherein an inner winding is applied to outside of each of two of tooth provided to a core of each of the pair of electromagnetic coils, an outer winding is applied to outside of the inner windings, ways of applying current to be applied to the windings are changed depending on the distance of the electromagnetic coils, and the number of the casting molds n, the external size ?, and the width of each of the electromagnetic coils W are defined as n×?<W.Type: ApplicationFiled: August 27, 2013Publication date: June 11, 2015Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Tatsuhiko Ikeda, Nobuhiro Okada, Hiroshi Hayashi, Masahiro Yamazaki
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Publication number: 20150152569Abstract: An apparatus (10) for producing an SiC single crystal is used in the solution growth includes a seed shaft (28) and a crucible (14). The seed shaft (28) has a lower end surface (28S) to which an SiC seed crystal (32) is to be attached. The crucible (14) holds an Si—C solution (15). The seed shaft (28) includes a cylinder part (28A), a bottom part (28B), and a low heat conductive member (28C). The bottom part (28B) is located at the lower end of the cylinder part (28A) and has the lower end surface (28S). The low heat conductive member (28C) is arranged on the upper surface of the bottom part (28B) and has a thermal conductivity lower than that of the bottom part (28B). This production apparatus can make the temperature within the crystal growth surface of the SiC seed crystal less liable to vary.Type: ApplicationFiled: July 10, 2013Publication date: June 4, 2015Inventors: Nobuhiro Okada, Kazuhito Kamei, Kazuhiko Kusunoki, Nobuyoshi Yashiro, Koji Moriguchi, Hironori Daikoku, Motohia Kado, Hidemitsu Sakamoto
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Patent number: 8906451Abstract: A method for producing coated water-soluble particles in a manner to form two or more coating layers on surfaces of the water-soluble particles, characterized by including: a step A wherein after supplying a first coating material that contains a polyol component and an isocyanate component, a second coating material is additionally supplied to surfaces of first coating bodies that have coating layers formed of the first coating material that has not been sufficiently cured, so that second coating bodies that are provided with coating layers of the second coating material are obtained.Type: GrantFiled: October 5, 2010Date of Patent: December 9, 2014Assignee: Central Glass Company, LimitedInventors: Hiroyuki Fujii, Nobuhiro Okada, Hideaki Sueta, Tadashi Tanaka, Kazuyoshi Morita
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Publication number: 20140116325Abstract: A region of an SiC solution in the vicinity of an SiC seed crystal is cooled while suppressing the temperature variation in a peripheral region of the SiC solution. An apparatus includes a seed shaft and a crucible for an SiC solution. The seed shaft has a lower end surface for attachment to an SiC seed crystal. The crucible comprises a main body, an intermediate cover, and a top cover. The main body includes a first cylindrical portion and a bottom portion at a lower end portion of the first cylindrical portion. The intermediate cover is within the first cylindrical portion and above the liquid level of the SiC solution in the main body. The intermediate cover has a first through hole for the seed shaft. The top cover is disposed above the intermediate cover and has a second through hole for the seed shaft to pass through.Type: ApplicationFiled: June 11, 2012Publication date: May 1, 2014Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kazuhito Kamei, Kazuhiko Kusunoki, Nobuyoshi Yashiro, Nobuhiro Okada, Hironori Daikoku, Motohisa Kado, Hidamisu Kasamoto
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Publication number: 20140116324Abstract: An apparatus for producing an SiC single crystal includes a crucible for accommodating an Si—C solution and a seed shaft having a lower end surface where an SiC seed crystal (36) would be attached. The seed shaft includes an inner pipe that extends in a height direction of the crucible and has a first passage. An outer pipe accommodates the inner pipe and constitutes a second passage between itself and the inner pipe and has a bottom portion whose lower end surface covers a lower end opening of the outer pipe. One passage of the first and second passages serves as an introduction passage where coolant gas flows downward, and the other passage serves as a discharge passage where coolant gas flows upward. A region inside the pipe that constitutes the introduction passage is to be overlapped by a region of not less than 60% of the SiC seed crystal.Type: ApplicationFiled: June 15, 2012Publication date: May 1, 2014Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kazuhiko Kusunoki, Kazuhito Kamei, Nobuyoshi Yashiro, Nobuhiro Okada, Hironori Daikoku, Motohisa Kado, Hidemitsu Sakamoto
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Publication number: 20130305981Abstract: A manufacturing apparatus of a SiC single crystal which can suppress the generation of a polycrystal is provided. A jig (41) and a crucible (6) are accommodated in a chamber (1). A SiC solution (8) is housed in the crucible (6). The jig (41) includes a seed shaft (411) and a cover member (412). The seed shaft (411) can move up and down, and a SiC seed crystal (9) is attached to the lower surface thereof. The cover member (412) is attached to the lower end portion of the seed shaft (411). The cover member (412) is a housing which has an opening at its lower end, wherein the lower end portion of the seed shaft (411) is disposed in the cover member (412).Type: ApplicationFiled: December 26, 2011Publication date: November 21, 2013Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kazuhito Kamei, Kazuhiko Kusunoki, Nobuyoshi Yashiro, Nobuhiro Okada, Motohisa Kado, Hidemitsu Sakamoto, Hironori Daikoku
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Publication number: 20130284083Abstract: A manufacturing apparatus for SiC single crystal has a control unit to control induction heating such that frequency f (Hz) of alternating current to be passed to the induction heating unit satisfies Formula (1); D1 (mm) is permeation depth of electromagnetic waves into a side wall of a crucible by the heating unit, D2 (mm) is permeation depth of electromagnetic waves into a SiC solution, T (mm) is thickness of the crucible side wall of the crucible, and R (mm) is crucible inner radius: (D1?T)×D2/R>1??(1) where, D1 is defined by Formula (2), and D2 by Formula (3): D1=503292×(1/(f×?c×?c))1/2??(2) D2=503292×(1/(f×?s×?s))1/2??(3); ?c is electric conductivity (S/m) of the sidewall, ?s is electric conductivity (S/m) of the SiC solution; ?c is relative permeability of the sidewall, and ?s relative permeability of the SiC solution.Type: ApplicationFiled: December 26, 2011Publication date: October 31, 2013Applicants: Toyota Jidosha Kabushiki Kaisha, Nippon Steel & Sumitomo Metal CorporationInventors: Nobuhiro Okada, Kazuhito Kamei, Kazuhiko Kasunoki, Nobuyoshi Yashiro, Kouji Moriguchi, Hironori Daikoku, Hiroshi Suzuki, Tomokazu Ishii, Hidemitsu Sakamoto, Motohisa Kado, Yoichiro Kawai
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Patent number: 8567225Abstract: A bent member having excellent dimensional accuracy is manufactured by stably forming a high temperature portion uniformly in the circumferential direction of a steel tube and in a narrow region in the axial direction of the steel. The bent member is manufactured by supporting a steel tube at a first position while feeding it, performing induction heating of the steel tube at a second position with an induction heating coil, cooling the steel tube at a third position to form a high temperature portion which moves in the axial direction of the steel tube, and three-dimensionally varying the position of a gripping mechanism for the steel tube in a region to apply a bending moment to the high temperature portion.Type: GrantFiled: July 6, 2012Date of Patent: October 29, 2013Assignee: Nippon Steel & Sumitomo Metal CorporationInventors: Nobuhiro Okada, Atsushi Tomizawa, Naoaki Shimada
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Publication number: 20130039965Abstract: A coated granular material of the present invention includes: a water-soluble granular substance; a coating layer applied to at least a surface of the water-soluble granular substance and containing a thermosetting resin A formed from a resin liquid having a molar ratio A of isocyanate groups to hydroxyl groups of 0.5 to 0.99; and a protection layer applied to the coating layer and containing a thermosetting resin B formed from a resin liquid having a molar ratio B of isocyanate groups to hydroxyl groups of 0.75 to 2.0, wherein the molar ratio B of the protection layer is greater than the molar ratio A of the coating layer. The present coated granular material is capable of achieving both of a short-term release pattern and an initial release limiting function and maintaining good quality.Type: ApplicationFiled: March 4, 2011Publication date: February 14, 2013Applicant: CENTRAL GLASS COMPANY, LIMITEDInventors: Hiroyuki Fujii, Nobuhiro Okada, Hideaki Sueta, Tadashi Tanaka, Kazuyoshi Morita
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Publication number: 20130000375Abstract: A bent member having excellent dimensional accuracy is manufactured by stably forming a high temperature portion uniformly in the circumferential direction of a steel tube and in a narrow region in the axial direction of the steel. The bent member is manufactured by supporting a steel tube at a first position while feeding it, performing induction heating of the steel tube at a second position with an induction heating coil, cooling the steel tube at a third position to form a high temperature portion which moves in the axial direction of the steel tube, and three-dimensionally varying the position of a gripping mechanism for the steel tube in a region to apply a bending moment to the high temperature portion.Type: ApplicationFiled: July 6, 2012Publication date: January 3, 2013Applicant: SUMITOMO METAL INDUSTRIES, LTD.Inventors: Nobuhiro Okada, Atsushi Tomizawa, Naoaki Shimada
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Publication number: 20120325806Abstract: An induction heating coil for stably heating a steel tube which is being fed in its axial direction without rotating, the heating being uniform in the circumferential direction and in a narrow range in the axial direction has at least two 1-turn coils in the form of a first turn coil body and a second turn coil body. The inner peripheral length Ln (the non-effective coil length) where the effective number of coil turns is less than the total number of coil turns when the coil is projected in the axial direction and the inner peripheral length L0 of the projected coil bodies (the inner coil length) satisfy Ln/L0<0.05. First and second coil bodies have insulating portions on their connecting portions, and the insulating portions are present in locations separated by a central angle of 5-45° measured from the center of the coil bodies.Type: ApplicationFiled: July 6, 2012Publication date: December 27, 2012Applicant: SUMITOMO METAL INDUSTRIES, LTD.Inventors: Nobuhiro OKADA, Atsushi Tomizawa, Naoaki Shimada