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).

  • Patent number: 8075954
    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: February 23, 2010
    Date of Patent: December 13, 2011
    Assignee: Ulvac, Inc.
    Inventors: Hiroshi Nagata, Yoshinori Shingaki
  • Publication number: 20110293829
    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: Application
    Filed: June 20, 2011
    Publication date: December 1, 2011
    Inventors: Hiroshi Nagata, Yoshinori Shingaki
  • Publication number: 20110294749
    Abstract: A compound which may be used for the prevention or treatment of respiratory diseases in which STAT 6 is concerned, particularly asthma, chronic obstructive pulmonary disease and the like is provided. A pyrimidine derivative or a salt thereof, which has an arylamino or arylethylamino group which may be substituted with a specified substituent, at the 2-position, amino group substituted with benzyl group or the like, at the 4-position, and carbamoyl group which may be substituted, at the 5-position, is provided.
    Type: Application
    Filed: June 28, 2011
    Publication date: December 1, 2011
    Applicant: Astellas Pharma Inc.
    Inventors: Shinya Nagashima, Hiroshi Nagata, Masahiro Iwata, Masaki Yokota, Hiroyuki Moritomo, Eiichi Nakai, Sadao Kuromitsu, Keiko Ohga, Makoto Takeuchi
  • Patent number: 8056610
    Abstract: A secondary cooling apparatus capable of gradually cooling cast thin pieces and a cast apparatus that uses it are provided. A comb tooth-shaped device is arranged inside a vessel of the secondary cooling apparatus; the cast thin pieces are piled on the comb tooth-shaped device; and crushed small pieces are placed thereon. After the cast thin pieces and the crushed small pieces are gradually cooled, the cast thin pieces are crushed by a pressing device. The crushed small pieces are rapidly cooled by being in contact with a surface of a bottom wall and side faces of cooling teeth. Nd-rich phases or R-rich phases can be annealed by the gradual cooling, and after the crushed small pieces are rapidly cooled to its oxidation temperature or below, the crushed small pieces can be taken out to the air atmosphere.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: November 15, 2011
    Assignee: Ulvac, Inc.
    Inventors: Youichi Hirose, Hiroshi Nagata
  • Publication number: 20110261255
    Abstract: A video display device includes: a valid area judging unit; a scene change detector; a video conversion processor; and a video display unit. The valid area judging unit recognizes an input video signal and judges an aspect ratio of a valid area of the input video signal. The scene change detector detects a moment when a series of highly related videos in terms of time are switched. The video conversion processor converts the input video signal based on the aspect ratio of the valid area judged by the valid area judging unit relative to the input video signal and scene change information detected by the scene change detector, and outputs the converted video signal to the video display unit. The video display unit conducts a control for displaying an output video signal outputted from the video conversion processor on a display area.
    Type: Application
    Filed: December 5, 2008
    Publication date: October 27, 2011
    Applicant: PIONEER CORPORATION
    Inventor: Hiroshi Nagata
  • Patent number: 8012959
    Abstract: A compound which may be used for the prevention or treatment of respiratory diseases in which STAT 6 is concerned, particularly asthma, chronic obstructive pulmonary disease and the like is provided. A pyrimidine derivative or a salt thereof, which has an arylamino or arylethylamino group which may be substituted with a specified substituent, at the 2-position, amino group substituted with benzyl group or the like, at the 4-position, and carbamoyl group which may be substituted, at the 5-position, is provided.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: September 6, 2011
    Assignee: Astellas Pharma Inc.
    Inventors: Shinya Nagashima, Hiroshi Nagata, Masashiro Iwata, Masaki Yokota, Hiroyuki Moritomo, Eiichi Nakai, Sadao Kuromitsu, Keiko Ohga, Makoto Takeuchi
  • Publication number: 20110189498
    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 la 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 6, 2009
    Publication date: August 4, 2011
    Applicant: ULVAC, INC.
    Inventors: Hiroshi Nagata, Yoshinori Shingaki, Youichi Hirose, Kyoutoshi Miyagi
  • Publication number: 20110132142
    Abstract: A silicon purification method includes a solidification purification step in which metal impurities are removed by irradiating a base material made of metallic silicon with an electron beam.
    Type: Application
    Filed: August 11, 2009
    Publication date: June 9, 2011
    Applicant: ULVAC, INC.
    Inventors: Yasuo Ookubo, Youichi Hirose, Hiroshi Nagata
  • Publication number: 20110126670
    Abstract: 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: Application
    Filed: July 30, 2009
    Publication date: June 2, 2011
    Applicant: ULVAC, INC.
    Inventors: Yasuo Ookubu, Youichi Hirose, Hiroshi Nagata
  • Publication number: 20110052799
    Abstract: The method has the steps of: grinding a recovered scrap magnet which is an iron-boron-rare earth-based sintered magnet, thereby obtaining a scrap-derived recovered raw material powder; obtaining a sintered body from the scrap-derived recovered raw material powder by a powder metallurgy method; and processing the sintered body. The processing includes the steps of: heating the sintered body disposed in a processing chamber; evaporating a metal evaporating material containing at least one of Dy and Tb in which the metal evaporating material is disposed in the same or another processing chamber; adhering metal atoms evaporated in the evaporating step to a surface of the sintered body while controlling a supply amount of the evaporated metal atoms; and diffusing the adhered metal atoms into grain boundaries and/or grain boundary phases of the sintered body.
    Type: Application
    Filed: February 18, 2009
    Publication date: March 3, 2011
    Inventors: Hiroshi Nagata, Yoshinori Shingaki
  • Publication number: 20110001593
    Abstract: 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: Application
    Filed: December 19, 2007
    Publication date: January 6, 2011
    Inventors: Hiroshi Nagata, Kyuzo Nakamura, Takeo Katou, Atsushi Nakatsuka, Ichirou Mukae, Masami Itou, Ryou Yoshiizumi, Yoshinori Shingaki
  • Publication number: 20100321847
    Abstract: 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: Application
    Filed: August 27, 2010
    Publication date: December 23, 2010
    Inventors: Shuji KATOH, Toshihiko MATSUDA, Takashi IKIMI, Hiroshi NAGATA
  • Publication number: 20100310408
    Abstract: 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: Application
    Filed: December 25, 2008
    Publication date: December 9, 2010
    Inventors: Hiroshi Nagata, Yoshinori Shingaki
  • Publication number: 20100239878
    Abstract: High-performance magnets are obtained by: housing metal evaporating materials (v) containing at least one of Dy and Tb and sintered magnets (S) inside a processing box; disposing the processing box inside a vacuum chamber; thereafter, heating the processing box to a predetermined temperature in a vacuum atmosphere to thereby evaporate the metal evaporating materials and cause them to be adhered to the sintered magnets. The metal atoms of the adhered Dy or Tb are diffused into grain boundaries and/or grain boundary phases of the sintered magnets. A method of manufacturing a permanent magnet is provided in which, even if the sintered magnets and the metal evaporating materials are disposed in close proximity to each other, the squareness of demagnetization curve is not impaired and in which high feasibility of mass production can be attained. While the metal evaporating materials are being evaporated, an inert gas is introduced into the processing chamber in which the sintered magnets are disposed.
    Type: Application
    Filed: October 28, 2008
    Publication date: September 23, 2010
    Inventors: Hiroshi Nagata, Yoshinori Shingaki, Kazutoshi Takahashi, Yasuo Nakadai
  • Publication number: 20100224341
    Abstract: A secondary cooling apparatus capable of gradually cooling cast thin pieces and a cast apparatus that uses it are provided. A comb tooth-shaped device is arranged inside a vessel of the secondary cooling apparatus; the cast thin pieces are piled on the comb tooth-shaped device; and crushed small pieces are placed thereon. After the cast thin pieces and the crushed small pieces are gradually cooled, the cast thin pieces are crushed by a pressing device. The crushed small pieces are rapidly cooled by being in contact with a surface of a bottom wall and side faces of cooling teeth. Nd-rich phases or R-rich phases can be annealed by the gradual cooling, and after the crushed small pieces are rapidly cooled to its oxidation temperature or below, the crushed small pieces can be taken out to the air atmosphere.
    Type: Application
    Filed: March 23, 2010
    Publication date: September 9, 2010
    Applicant: ULVAC, INC.
    Inventors: Youichi HIROSE, Hiroshi Nagata
  • Patent number: 7790884
    Abstract: To provide a compound which has an excellent activity to modulate the functions of CCR4 or TARC and/or MDC and can be used for the prevention and/or treatment of various inflammatory diseases, allergic diseases, autoimmune diseases and the like. An acylaminopiperidine compound represented by the formula (I) or a pharmaceutically acceptable salt thereof. [Symbols in the formula represent the following meanings; A: a single bond or C1-C6 alkylene, R1: phenyl which may be substituted, etc., R2: —H or C1-C6 alkyl, R3: —H, C1-C6 alkyl or C3-C8 cycloalkyl, R4: pyrrolidin-2-yl which may be substituted, etc., and D: benzene ring or pyrazole ring].
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: September 7, 2010
    Assignee: Astellas Pharma Inc.
    Inventors: Toru Kontani, Noriyuki Kawano, Naoyuki Masuda, Koji Kato, Hiroshi Nagata, Hiroshi Inami, Tadashi Terasaka, Kazuhiro Yokoyama, Takahiro Miyazaki
  • Publication number: 20100222329
    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: Application
    Filed: November 10, 2009
    Publication date: September 2, 2010
    Applicant: Astellas Pharma Inc.
    Inventors: Keizo Sugasawa, Susumu Watanuki, Yuji Koga, Hiroshi Nagata, Ryutaro Wakayama, Fukushi Hirayama, Ken-ichi Suzuki
  • Publication number: 20100222361
    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: Application
    Filed: November 10, 2009
    Publication date: September 2, 2010
    Applicant: Astellas Pharma Inc.
    Inventors: Keizo SUGASAWA, Susumu WATANUKI, Yuji KOGA, Hiroshi NAGATA, Ryutaro WAKAYAMA, Fukushi HIRAYAMA, Ken-ichi SUZUKI
  • Patent number: 7787042
    Abstract: A sensed image and shooting time information corresponding to the sensed image are stored on a memory card. A display unit comprises a plurality of display areas at specific consecutive shooting times and displays the shooting time in the display area. A CPU specifies a display area in which a sensed image corresponding to the shooting time as an image-existing area, and enables the display unit to visibly indicate the image-existing area of the display areas specified as the image-existing area, based on a prescribed condition by a cursor. In this case, when the movement of the display area is instructed, the CPU moves only the image-existing area and indicates the existence of an image, by controlling the movement of the cursor.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: August 31, 2010
    Assignee: Olympus Corporation
    Inventor: Hiroshi Nagata
  • Patent number: 7782332
    Abstract: An image displaying device comprises a reproduction list creating unit for creating a group of image data within a prescribed range in which a frame number “1” is included and the frame number increases as a first reproduction list and for creating a group of image data within a prescribed range in which a largest frame number is included and the frame number decreases as a second reproduction list, a display controlling unit for reproducing and displaying image data of a frame to be reproduced registered in the second reproduction list in the case that the frame number is set in a direction along which the frame number decreases below the frame number “1” while image data registered in the first reproduction list is reproduced.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: August 24, 2010
    Assignee: Olympus Corporation
    Inventor: Hiroshi Nagata