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).
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Patent number: 8545641Abstract: 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: GrantFiled: June 30, 2005Date of Patent: October 1, 2013Assignee: Intermetallics Co., Ltd.Inventors: Masato Sagawa, Hiroshi Nagata, Osamu Itatani
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Patent number: 8409319Abstract: 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: GrantFiled: August 11, 2009Date of Patent: April 2, 2013Assignee: Ulvac, Inc.Inventors: Yasuo Ookubo, Youichi Hirose, Hiroshi Nagata
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Patent number: 8404016Abstract: A method for refining a metal such that, after a base material derived from the metal is melted by being irradiated with an electron beam, the base material is refined by solidifying the base material which was melted, the method including: a step melting all of the base material by irradiating the electron beam over an entire surface of the base material loaded inside a water-cooled crucible placed inside a high vacuum atmosphere; a step gradually solidifying the base material which was melted from a molten metal bottom part of the base material which was melted toward a molten metal surface part at a side being irradiated by the electron beam by gradually weakening an output of the electron beam while maintaining a condition in which the base material which was melted is irradiated with the electron beam; and a step removing a molten metal part which is not solidified, after the base material which was melted is solidified to a certain percentage.Type: GrantFiled: July 30, 2009Date of Patent: March 26, 2013Assignee: Ulvac, Inc.Inventors: Yasuo Ookubo, Youichi Hirose, Hiroshi Nagata
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Publication number: 20130063452Abstract: Image data is captured from a specified area of a rendered screen display from the video memory for a number of frames. The image data can be captured in another area of video memory, enabling a video memory to video memory copy to be performed, thus bypassing system memory. This captured image data can be synchronized with event trace data, or other metadata from the operating system, associated with the application. Analysis tools can read and analyze the captured image data in real time to detect and report render artifacts. A graphics processing unit can implement the analysis and operate on the image data directly in the video memory. Such analysis can include a statistical analysis of the images in a sequence of screen captures to identify outliers in the sequence. These outliers have render artifacts.Type: ApplicationFiled: September 12, 2011Publication date: March 14, 2013Applicant: MICROSOFT CORPORATIONInventors: Imran Ali, Andrei Baioura, Jin Jia, Deepali Bhagvat, Michael Haight, Hiroshi Nagata
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Patent number: 8375891Abstract: There is provided a vacuum evaporating apparatus which is suitable for performing a process in which a metal vapor atmosphere is formed in a processing chamber, the metal atoms in this metal vapor atmosphere are caused to be adhered to the surface of an object to be processed, and the metal atoms adhered to the surface of the object to be processed are diffused into grain boundary phases thereof. The apparatus comprises: a processing furnace (11); at least one processing box (4) disposed inside the processing furnace; and a heating means (2) provided inside the processing furnace so as to enclose the processing box. An evacuating means is provided which, after housing the processing box inside the processing furnace in a state in which the object to be processed (S) and the metal evaporating material (V) are disposed in the processing box, reduces the processing furnace and the processing box to a predetermined pressure and keep them at that pressure.Type: GrantFiled: September 10, 2007Date of Patent: February 19, 2013Assignee: Ulvac, Inc.Inventors: Hiroshi Nagata, Kyuzo Nakamura, Takeo Katou, Atsushi Nakatsuka, Ichirou Mukae, Masami Itou, Ryou Yoshiizumi, Yoshinori Shingaki
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Patent number: 8367696Abstract: [PROBLEMS] Provided is a compound which has an antagonistic action on a muscarinic M3 receptor and is useful as an active ingredient of a prophylactic and/or therapeutic agent for an inflammatory disease such as a chronic obstructive pulmonary disease (COPD), asthma and the like. [MEANS For SOLVING PROBLEMS] The present inventors have made studies on a compound having an antagonistic action on the binding of a muscarinic M3 receptor, and they have found that an aza-bridged-ring compound or a salt thereof has an antagonistic action on the binding of a muscarinic M3 receptor, thereby completing the present invention. The aza-bridged-ring compound of the present invention has an antagonistic action on the binding of a muscarinic M3 receptor, and can be used as a prophylactic and/or therapeutic agent for an inflammatory disease such as a chronic obstructive pulmonary disease (COPD), asthma and the like.Type: GrantFiled: February 8, 2008Date of Patent: February 5, 2013Assignee: Astellas Pharma Inc.Inventors: Shinya Nagashima, Toru Kontani, Hiroshi Nagata, Yuji Matsushima, Hisao Hamaguchi, Tadatsura Koshika
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Patent number: 8354898Abstract: A harmonic suppression resonator comprises a plurality of waveguide resonators that resonate in TE mode, in which harmonic suppression resonator, adjoining resonators are coupled via a plurality of coupling windows. Four coupling windows 33bc1, 33bc2, 33bc3 and 33bc4 are provided between a resonant region 51b and a resonant region adjoining the resonant region 51b. These coupling windows allow fundamental wave modes of the adjoining resonators to be coupled mainly by magnetically coupling. The coupling windows 33bc3 and 33bc4 allow second harmonic modes of the adjoining resonators to be electrically coupled, and the coupling windows 33bc1 and 33bc2 allow the second harmonic modes of the adjoining resonators to be magnetically coupled. By causing the amount of the electrically coupling and the amount of the magnetically coupling to be substantially equal, the coupling of the second harmonic modes is negated, whereby propagation of the second harmonic is blocked.Type: GrantFiled: December 23, 2008Date of Patent: January 15, 2013Assignee: Furuno Electric Company LimitedInventors: Ken'ichi Iio, Mitsuru Makihara, Hiroshi Nagata, Yoshinobu Hashimoto
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Patent number: 8338429Abstract: 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: GrantFiled: November 10, 2009Date of Patent: December 25, 2012Assignee: Astellas Pharma, Inc.Inventors: Keizo Sugasawa, Susumu Watanuki, Yuji Koga, Hiroshi Nagata, Ryutaro Wakayama, Fukushi Hirayama, Ken-ichi Suzuki
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Patent number: 8328954Abstract: Crystal fractured surfaces of raw meal powder having more equal crystal orientation relationship in the magnetic field are arranged to be assembled together so that a method of manufacturing a permanent magnet which has an extremely high degree of orientation can be provided. In this invention, raw meal powder (P) is filled into a cavity, the raw meal powder (P) is oriented in the magnetic field while being pressed or urged by pressing means that has a smaller area than the cross-sectional area of the cavity. Semi-finished product thus oriented is compression-molded into a predetermined shape in the magnetic field.Type: GrantFiled: December 25, 2008Date of Patent: December 11, 2012Assignee: Ulvac, Inc.Inventors: Hiroshi Nagata, Yoshinori Shingaki
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Patent number: 8273745Abstract: The present invention relates to a novel compound or a salt thereof, which is useful as a CRTH2 antagonist, especially as a medicament for disorder that participates eosinophil, for example, allergic disorder such as asthma, allergic rhinitis, allergic dermatitis, conjunctival inflammation, hives, eosinophilic bronchitis, food allergy, inflammation of the nasal sinuses, multiple sclerosis, angiitis, or chronic obstructive pulmonary disease (COPD) and the like.Type: GrantFiled: December 13, 2007Date of Patent: September 25, 2012Assignee: Astellas Pharma IncInventors: Tadashi Terasaka, Tatsuya Zenkoh, Hisashi Hayashida, Hiroshi Matsuda, Junji Sato, Yoshimasa Imamura, Hiroshi Nagata, Norio Seki, Yoshiyuki Tenda, Mamoru Tasaki, Masahiro Takeda, Seiichiro Tabuchi, Minoru Yasuda, Kazunori Tsubaki
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Patent number: 8262808Abstract: There is provided a method of manufacturing a permanent magnet which has an extremely high coercive force and high magnetic properties is manufactured at high productivity. There are executed: a first step of causing at least one of Dy and Tb to adhere to at least part of a surface of iron-boron-rare-earth based sintered magnet; and a second step of diffusing, through heat-treatment at a predetermined temperature, at least one of Dy and Tb adhered to the surface of the sintered magnet into grain boundary phase of the sintered magnet.Type: GrantFiled: December 19, 2007Date of Patent: September 11, 2012Assignee: ULVAC, Inc.Inventors: Hiroshi Nagata, Kyuzo Nakamura, Takeo Katou, Atsushi Nakatsuka, Ichirou Mukae, Masami Itou, Ryou Yoshiizumi, Yoshinori Shingaki
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Patent number: 8257511Abstract: One object of the present invention is to provide a method for manufacturing a permanent magnet which can effectively improving the magnetizing properties and coercive force with efficiently diffusing Dy into grain boundary phases without deteriorating a surface of sintered magnet of Nd—Fe—B family and does not require any subsequent working process. Sintered magnet S of Nd—Fe—B family and Dy are arranged in a processing chamber 20 apart from each other. Then Dy is evaporated by heating the processing chamber 20 under a reduced pressure condition to evaporate Dy with elevating the temperature of sintered magnet S to a predetermined temperature and to supply and deposit evaporated Dy atoms onto the surface of sintered magnet S. During which the supplying amount of Dy atoms onto the sintered magnet S is controlled so as to diffuse and homogeneously penetrate them into the grain boundary phases of sintered magnet before Dy layer is formed on the surface of sintered magnet.Type: GrantFiled: August 22, 2007Date of Patent: September 4, 2012Assignee: Ulvac, Inc.Inventors: Hiroshi Nagata, Yoshinori Shingaki
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Publication number: 20120181164Abstract: 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: ApplicationFiled: September 17, 2010Publication date: July 19, 2012Applicant: ULVAC, INC.Inventors: Yasuo Ookubo, Hiroshi Nagata
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Patent number: 8213146Abstract: A semiconductor power conversion apparatus capable of protecting an IGBT from an overvoltage by supplying a sufficient gate current to the gate of the IGBT. The IGBT is protected from the overvoltage by connecting clamping elements connected in series between a collector of the IGBT and the gate thereof, and by connecting a resistor to each of different junction points between the clamping elements connected in series.Type: GrantFiled: August 27, 2010Date of Patent: July 3, 2012Assignee: Hitachi, Ltd.Inventors: Shuji Katoh, Toshihiko Matsuda, Takashi Ikimi, Hiroshi Nagata
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Patent number: 8157926Abstract: There is provided a method of manufacturing a permanent magnet in which Dy and/or Tb adhered to the surface of a sintered magnet containing a lubricant can be efficiently diffused and in which the permanent magnet having high magnetic properties can be manufactured at good productivity. The permanent magnet is manufactured by executing a first step of adhering at least one of Dy and Tb to at least a part of a surface of a sintered magnet made by sintering iron-boron-rare earth based alloy raw meal powder containing a lubricant; and a second step of heat-treating the sintered magnet at a predetermined temperature to thereby disperse at least one of Dy and Tb adhered to the surface of the sintered magnet into grain boundary phase of the sintered magnet. At this time, as the sintered magnet, there is used one manufactured in an average grain size within a range of 4 ?m˜8 ?m.Type: GrantFiled: December 19, 2007Date of Patent: April 17, 2012Assignee: Ulvac, Inc.Inventors: Hiroshi Nagata, Yoshinori Shingaki
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Publication number: 20120086531Abstract: A method for manufacturing a permanent magnet can effectively improve the magnetizing properties and coercive force with efficiently diffusing Dy into grain boundary phases without deteriorating a surface of sintered magnet of Nd—Fe—B family and does not require any subsequent working process. Sintered magnet S of Nd—Fe—B family and Dy are arranged in a processing chamber apart from each other. Then Dy is evaporated by heating the processing chamber under a reduced pressure condition to evaporate Dy with elevating the temperature of sintered magnet S to a predetermined temperature and to supply and deposit evaporated Dy atoms onto the surface of sintered magnet S. During which the supplying amount of Dy atoms onto the sintered magnet S is controlled so as to diffuse and homogeneously penetrate them into the grain boundary phases of sintered magnet before Dy layer is formed on the surface of sintered magnet.Type: ApplicationFiled: December 5, 2011Publication date: April 12, 2012Inventors: Hiroshi Nagata, Yoshinori Shingaki
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Patent number: 8128759Abstract: By causing at least one of Dy and Tb to be adhered to the surface of an iron-boron-rare earth based sintered magnet of a predetermined shape, and is then to be diffused into grain boundary phase, a permanent magnet can be manufactured at high workability and low cost. An iron-boron-rare earth based sintered magnet is disposed in a processing chamber and is heated to a predetermined temperature. Also, an evaporating material made up of a fluoride containing at least one of Dy and Tb disposed in the same or another processing chamber is evaporated, and the evaporated evaporating material is caused to be adhered to the surface of the sintered magnet. The Dy and/or Tb metal atoms of the adhered evaporating material are diffused into the grain particle phase of the sintered magnet before a thin film made of the evaporated material is formed on the surface of the sintered magnet.Type: GrantFiled: December 19, 2007Date of Patent: March 6, 2012Assignee: Ulvac, Inc.Inventors: Hiroshi Nagata, Kyuzo Nakamura, Takeo Katou, Atsushi Nakatsuka, Ichirou Mukae, Masami Itou, Ryou Yoshiizumi, Yoshinori Shingaki
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Patent number: 8128760Abstract: By eliminating the necessity of a prior step for cleaning a sintered magnet before adhering Dy and/or Tb to the surface of the sintered magnet S, the productivity of a permanent magnet having diffused Dy and/or Tb into grain boundary phase is improved. Iron-boron-rare earth based sintered magnet (S) disposed in a processing chamber (20) is heated to a predetermined temperature. An evaporating material (V) which is made of a hydride containing at least one of Dy and Tb is disposed in the same or in another processing chamber and is evaporated to cause the evaporated evaporating material to the surface of the sintered magnet. Metal atoms of Dy and/or Tb are diffused into grain boundary phase of the sintered magnet.Type: GrantFiled: December 19, 2007Date of Patent: March 6, 2012Assignee: Ulvac, Inc.Inventors: Hiroshi Nagata, Kyuzo Nakamura, Takeo Katou, Atsushi Nakatsuka, Ichirou Mukae, Masami Itou, Ryou Yoshiizumi, Yoshinori Shingaki
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Patent number: 8130466Abstract: A disk-drive magnetic circuit fixing structure and fixing method for fixing a magnetic circuit to a base by means of a plurality of screws, wherein provisions are made to substantially prevent a microscopic sliding movement involving impulsive vibration from occurring at a fastening portion between the magnetic circuit and the base. More specifically, in a disk drive including a disk enclosure having a base and a cover, a magnetic head contained within the disk enclosure, and a driving coil motor for driving the magnetic head by working in combination with an actuator on which the magnetic head is mounted and a magnetic circuit disposed in the vicinity of the actuator, the magnetic circuit is fixed to the base with a single or a plurality of screws by applying in advance a lubricant forming a lubricating layer on a face where each screw contacts the magnetic circuit or the base.Type: GrantFiled: December 10, 2008Date of Patent: March 6, 2012Assignee: Toshiba Storage Device CorporationInventor: Hiroshi Nagata
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Patent number: 8128757Abstract: There is provided a method of manufacturing a permanent magnet having extremely high orientation by arranging such that the crystal fractures of alloy raw meal powder having more equal crystal orientational relationship are combined in magnetic field. In this invention, alloy raw meal powder is filled into a cavity and, while agitating the alloy raw meal powder inside the cavity, is oriented in the magnetic field. This oriented body is then compression molded in the magnetic field into a predetermined shape.Type: GrantFiled: November 19, 2007Date of Patent: March 6, 2012Assignee: Ulvac, Inc.Inventors: Hiroshi Nagata, Yoshinori Shingaki