Patents by Inventor Hiroshi Nagata

Hiroshi Nagata 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).

  • Publication number: 20150251398
    Abstract: Provided is a bonding system, which includes: a processing station in which specified processes are performed on a first substrate and a second substrate; and a carry-in/carry-out station in which the first substrate, the second substrate or a laminated substrate obtained by bonding the first substrate and the second substrate is carried into and out of the processing station. The processing station includes: a first processing apparatus configured to coat the first substrate with the bonding agent using a bonding agent injecting part; a second processing apparatus provided with a bevel cleaning unit for cleaning a bevel portion of the first substrate coated with the bonding agent; and a bonding apparatus configured to bond the first substrate and the second substrate through the bonding agent and a release agent. The first processing apparatus or the second processing apparatus further includes a release agent injection part for injecting the release agent.
    Type: Application
    Filed: February 27, 2015
    Publication date: September 10, 2015
    Inventors: Masatoshi DEGUCHI, Takashi SAKAUE, Hiroshi NAGATA, Kei TASHIRO
  • Publication number: 20150239048
    Abstract: The present invention discloses a manufacturing method and device of rare earth magnet alloy powder and rare earth magnet. The method comprises a process of fine grinding at least one kind of rare earth magnet alloy or at least one kind of rare earth magnet alloy coarse powder in inert jet stream with oxygen content below 1000 ppm to obtain powder with grain size smaller than 50 ?m. Low oxygen content ultra fine powder with grain size smaller than 1 ?m is not separated from the pulverizer, the oxygen content of the atmosphere is reduced to below 1000 ppm in the pulverizer when crushing the powder, thereby abnormal grain growth (AGG) rarely happens in the sintering process to get low oxygen content sintered magnet, it has advantages of simplifying process and reducing manufacturing cost.
    Type: Application
    Filed: September 10, 2013
    Publication date: August 27, 2015
    Applicant: XIAMEN TUNGSTEN CO., LTD.
    Inventors: Hiroshi Nagata, Chonghu Wu
  • Patent number: 9046611
    Abstract: A self-powered gamma detector which can hold the influence of neutron rays to the minimum, and can measure the dose of gamma rays accurately under a high neutron environment in the reactor is disclosed. The self-powered gamma detector has a columnar emitter member; a collector member arranged in surroundings of the emitter member through an insulating member, and the strength of gamma rays is measured by detecting the value of a current which flows between the emitter member and an MI cable connected with the emitter member, and the collector member. Especially, the emitter member consists of pure tungsten (W), whose inevitable impurities is in 0.03 percent by weight or less.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: June 2, 2015
    Assignees: Japan Atomic Energy Agency, Sukegawa Electric Co., Ltd.
    Inventors: Tomoaki Takeuchi, Hiroshi Nagata, Noriaki Ohtsuka, Akira Shibata, Kunihiko Tsuchiya, Kuniaki Miura, Hiroshi Yamamoto
  • Publication number: 20150015245
    Abstract: A battery-less multi-rotation encoder including detection coils with the Barkhausen effect includes a rotation detection mechanism and a signal processing circuit. The detection coils generate voltage pulses with different positive and negative signs, and transmit them to the signal processing circuit, and the signal processing circuit includes a controller and an adder. The controller can set states of the detection coils to be High or Low and to maintain them at High or Low, based on the positive and negative signs of the respective voltage pulses and no voltage pulse being generated therefrom. The controller is configured to store the states of the respective detection coils in a memory. The adder can update a number of rotations according to the changes in the states of the respective detection coils. The signal processing circuit can determine the rotational angle of a rotational shaft within about 1/4 rotation unit.
    Type: Application
    Filed: January 8, 2013
    Publication date: January 15, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Jin Inoue, Takeshi Musha, Hiroshi Nishizawa, Hajime Nakajima, Ryosuke Takeuchi, Tatsuya Ito, Takashi Hirai, Hiroshi Nagata
  • Publication number: 20150005148
    Abstract: An apparatus is improved to successively make plastic bags each of which includes an end surface provided with a spout, by employing the general feeding way of panel material, to be simple in structure, low in cost, high in speed and to make it possible to successively make the plastic bags two by two. A first folded portion is formed in a first web of panel material 1. An aperture is formed in a second web of panel material 2. A spout is inserted into the aperture, the spout and the second web of panel material 2 being heat sealed with each other. The second web of panel material 2 is guided by a guide device 18 to be folded after being heat sealed so that a second folded portion should be formed in the second web of panel material. The spout is turned over by the second folded portion. The second folded portion and the first folded portion are heat sealed with each other while the second folded portion and the second web of panel material 2 are heat sealed with each other about the spout.
    Type: Application
    Filed: November 16, 2012
    Publication date: January 1, 2015
    Inventors: Hideki Ohmae, Mikio Totani, Hiroshi Nagata, Masakazu Hashimoto
  • Patent number: 8864902
    Abstract: A cement clinker which can be sintered at 1,300 to 1,400° C. which is lower than the conventional sintering temperature and develops excellent strength characteristics such as mortar compression strength. The cement clinker has a total content of C3A and C4AF calculated by Bogue's formulas of 22 mass % or more, a C3S content calculated by Bogue's formula of 60 mass % or more and an iron modulus (I.M.) of 1.3 or less, preferably 1.0 to 1.3. Since the total content of C3A and C4AF is 22 mass % or more, the cement clinker can be sintered at a low temperature and the reduction of strength when a cement composition is cured can be prevented by reducing the iron modulus of the cement clinker.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: October 21, 2014
    Assignee: Tokuyama Corporation
    Inventors: Hiroshi Nagata, Akinori Nakamura, Hiroyoshi Kato, Takashi Chabayashi, Daihachi Kitayama
  • Patent number: 8778143
    Abstract: The silicon purification method uses a silicon purification device including at least a crucible for loading a silicon metal and a plasma torch, and purifies the silicon metal by injecting a plasma gas from the plasma torch toward a melt surface of the silicon metal loaded in the crucible in a state where an angle formed by the melt surface and the plasma gas is set in the range of 20° to 80°.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: July 15, 2014
    Assignee: ULVAC, Inc.
    Inventors: Yasuo Ookubo, Hiroshi Nagata
  • Patent number: 8771422
    Abstract: The object of the present invention is to improve the productivity of a permanent magnet and to manufacture it at a low cost by effectively coating Dy and Tb on a surface of the magnet of Fe—B-rare earth elements having a predetermined configuration. The permanent magnet of the present invention is manufactured by a coating step for coating Dy on the surface of the magnet of Fe—B-rare earth elements having a predetermined configuration and a diffusing step for diffusing Dy coated on the surface of the magnet into crystal grain boundary phases of the magnet with being heat treated at a predetermined temperature.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: July 8, 2014
    Assignee: Ulvac, Inc.
    Inventors: Hiroshi Nagata, Yoshinori Shingaki
  • Patent number: 8765764
    Abstract: A 2-acylaminothiazole derivative or a pharmaceutically acceptable salt thereof having an excellent effect of proliferating human c-mpl-Ba/F3 cells and an activity of increasing platelets based on the effect of promoting the formation of megakaryocytic colonies. A compound or a pharmaceutically acceptable salt thereof useful in treating thrombocytopenia.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: July 1, 2014
    Assignee: Astellas Pharma, Inc.
    Inventors: Keizo Sugasawa, Susumu Watanuki, Yuji Koga, Hiroshi Nagata, Ryutaro Wakayama, Fukushi Hirayama, Ken-Ichi Suzuki
  • Publication number: 20140113163
    Abstract: A current interrupting device of a sealed battery includes a conductive member that is electrically connected to an external terminal of a battery case; a collector terminal that is arranged inside the battery case; and a reversing plate that is interposed between the conductive member and the collector terminal, and that electrically cuts off the conductive member from the collector terminal by deforming in response to an increase in pressure inside the battery case. An inner peripheral surface of the conductive member is joined to an outer peripheral surface of the reversing plate. An upper surface of the reversing plate does not contact the conductive member regardless of an activation of the current interrupting device.
    Type: Application
    Filed: October 1, 2013
    Publication date: April 24, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi NAGATA, Shigeru TAKASHIRO
  • Publication number: 20140110578
    Abstract: A self-powered gamma detector which can hold the influence of neutron rays to the minimum, and can measure the dose of gamma rays accurately under a high neutron environment in the reactor is disclosed. The self-powered gamma detector has a columnar emitter member; a collector member arranged in surroundings of the emitter member through an insulating member, and the strength of gamma rays is measured by detecting the value of a current which flows between the emitter member and an MI cable connected with the emitter member, and the collector member. Especially, the emitter member consists of pure tungsten (W), whose inevitable impurities is in 0.03 percent by weight or less.
    Type: Application
    Filed: October 11, 2013
    Publication date: April 24, 2014
    Applicants: SUKEGAWA ELECTRIC CO., LTD., JAPAN ATOMIC ENERGY AGENCY
    Inventors: Tomoaki TAKEUCHI, Hiroshi NAGATA, Noriaki OHTSUKA, Akira SHIBATA, Kunihiko TSUCHIYA, Kuniaki MIURA, Hiroshi YAMAMOTO
  • Publication number: 20140113164
    Abstract: A current interrupting device of a sealed battery includes a conductive member that is electrically connected to an external terminal arranged on an outside portion of a battery case; and a reversing plate that is electrically connected to a collector terminal arranged inside of the battery case, and that electrically cuts off the conductive member from the collector terminal by deforming in response to an increase in pressure inside of the battery case. The current interrupting device is attached to an outside portion of the battery case.
    Type: Application
    Filed: October 17, 2013
    Publication date: April 24, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi NAGATA
  • Publication number: 20140075997
    Abstract: The silicon purification method uses a silicon purification device including at least a crucible for loading a silicon metal and a plasma torch, and purifies the silicon metal by injecting a plasma gas from the plasma torch toward a melt surface of the silicon metal loaded in the crucible in a state where an angle formed by the melt surface and the plasma gas is set in the range of 20° to 80°.
    Type: Application
    Filed: November 8, 2013
    Publication date: March 20, 2014
    Applicant: ULVAC, INC.
    Inventors: Yasuo OOKUBO, Hiroshi NAGATA
  • Patent number: 8673392
    Abstract: A permanent magnet is provided which has formed a Dy, Tb film on a surface of an iron-boron-rare earth sintered magnet of a predetermined shape, with diffusion thereof into grain boundary phases, having a higher coercive force. The method of manufacturing a permanent magnet includes a film-forming step of evaporating metal evaporating material containing at least one of Dy and Tb and adhering evaporated metal atoms to a surface of the iron-boron-rare earth sintered magnet, and a diffusing step of performing heat treatment to diffuse metal atoms adhered to the surface into grain boundary phases of the sintered magnet. The metal evaporating material contains at least one of Nd and Pr.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: March 18, 2014
    Assignee: ULVAC, Inc.
    Inventors: Hiroshi Nagata, Kyuzo Nakamura, Takeo Katou, Atsushi Nakatsuka, Ichirou Mukae, Masami Itou, Ryou Yoshiizumi, Yoshinori Shingaki
  • Publication number: 20140027083
    Abstract: There is provided an evaporating material of thin plate shape which can be manufactured at a reduced cost and at high productivity, the evaporating material being adapted for use in enhancing the coercive force of neodymium-iron-boron sintered magnet by heat treatment while evaporating Dy in vacuum or in reduced-pressure inert gas atmosphere. The evaporating material of this invention has a core member 1a made of a fire-resistant metal having a multiplicity of through holes, and is made by melting a rare-earth metal or an alloy thereof so as to get adhered to, and solidified on, the core member. In this case, the above-mentioned adhesion is performed by dipping the core member into a molten bath of the rare-earth metal or an alloy thereof, and pulling it out of the molten bath.
    Type: Application
    Filed: October 1, 2013
    Publication date: January 30, 2014
    Applicant: ULVAC, INC.
    Inventors: Hiroshi Nagata, Yoshinori Shingaki, Youichi Hirose, Kyoutoshi Miyagi
  • Publication number: 20130340652
    Abstract: A cement clinker which can be sintered at 1,300 to 1,400° C. which is lower than the conventional sintering temperature and develops excellent strength characteristics such as mortar compression strength. The cement clinker has a total content of C3A and C4AF calculated by Bogue's formulas of 22 mass % or more, a C35 content calculated by Bogue's formula of 60 mass % or more and an iron modulus (I.M.) of 1.3 or less, preferably 1.0 to 1.3. Since the total content of C3A and C4AF is 22 mass % or more, the cement clinker can be sintered at a low temperature and the reduction of strength when a cement composition is cured can be prevented by reducing the iron modulus of the cement clinker.
    Type: Application
    Filed: April 17, 2012
    Publication date: December 26, 2013
    Applicant: TOKUYAMA CORPORATION
    Inventors: Hiroshi Nagata, Akinori Nakamura, Hiroyoshi Kato, Takashi Chabayashi, Daihachi Kitayama
  • Publication number: 20130343946
    Abstract: A method for manufacturing a sintered rare-earth magnet having a magnetic anisotropy, in which a very active powder having a small grain size can be safely used in a low-oxidized state. A fine powder as a material of the sintered rare-earth magnet having a magnetic anisotropy is loaded into a mold until its density reaches a predetermined level. Then, in a magnetic orientation section, the fine powder is oriented by a pulsed magnetic field. Subsequently, the fine powder is not compressed but immediately sintered in a sintering furnace. A multi-cavity mold for manufacturing a sintered rare-earth magnet having an industrially important shape, such as a plate magnet or an arched plate magnet, may be used.
    Type: Application
    Filed: August 26, 2013
    Publication date: December 26, 2013
    Applicant: INTERMETALLICS CO., LTD.
    Inventors: Masato SAGAWA, Hiroshi NAGATA, Osamu ITATANI
  • Publication number: 20130294031
    Abstract: A rotary encoder includes a rotary encoding unit attached to a rotary shaft which is rotatably held in a metal casing, a number-of-revolution detection unit supported by the metal casing for detecting a number of revolutions of the rotary encoding unit and producing heat, a cylindrical insulating resin cover having a base end attached to the metal casing for accommodating therein the rotary encoding unit and the number-of-revolution detection unit, a metal lid for blocking an opening of the other end of the insulating resin cover, and a shield cable electrically connected to the number-of-revolution detection unit and drawn out from a cable outlet of the metal lid. A shield of the shield cable is heat-transferably and electrically connected to the metal lid.
    Type: Application
    Filed: February 9, 2011
    Publication date: November 7, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hiroshi Nagata, Toshikazu Satone, Yoichi Omura, Takashi Okamuro
  • Patent number: 8545641
    Abstract: A method for manufacturing a sintered rare-earth magnet having a magnetic anisotropy, in which a very active powder having a small grain size can be safely used in a low-oxidized state. A fine powder as a material of the sintered rare-earth magnet having a magnetic anisotropy is loaded into a mold until its density reaches a predetermined level. Then, in a magnetic orientation section, the fine powder is oriented by a pulsed magnetic field. Subsequently, the fine powder is not compressed but immediately sintered in a sintering furnace. A multi-cavity mold for manufacturing a sintered rare-earth magnet having an industrially important shape, such as a plate magnet or an arched plate magnet, may be used.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: October 1, 2013
    Assignee: Intermetallics Co., Ltd.
    Inventors: Masato Sagawa, Hiroshi Nagata, Osamu Itatani
  • Patent number: 8409319
    Abstract: A silicon purification method includes a solidification purification step comprising: preparing the base material to be purified, loading the base material into a crucible, irradiating part of the base material, and fully melting the base material; gradually solidifying the base material by gradually weakening an electron beam so that the solidification proceeds until the solidifying portion occupies a first predetermined ratio of the base material; loading the remnant of the base material into the crucible, and fully melting the remnant of the base material by irradiating the entire area of the remnant of the base material with the electron beam; gradually solidifying the molten metal portion by gradually weakening the electron beam so that the solidification proceeds until the solidifying portion occupies a second predetermined ratio of the molten metal portion; and removing an unsolidified molten metal portion.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: April 2, 2013
    Assignee: Ulvac, Inc.
    Inventors: Yasuo Ookubo, Youichi Hirose, Hiroshi Nagata