Patents by Inventor Kiyohiro Uramoto

Kiyohiro Uramoto 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: 10287656
    Abstract: A rare earth magnet molding (1) of the present invention includes rare earth magnet particles (2), and an insulating phase (3) present among the rare earth magnet particles. Segregation regions (4) in which at least one element selected from the group consisting of Dy, Tb, Pr and Ho is segregated are distributed in the rare earth magnet particles (2). Accordingly, the rare earth magnet molding that has excellent resistance to heat in motor environments or the like while maintaining high magnetic characteristics (coercive force) is provided.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: May 14, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Yoshio Kawashita, Kiyohiro Uramoto, Takashi Miyamoto, Yoshiteru Yasuda
  • Publication number: 20140349099
    Abstract: A molded rare-earth magnet which simultaneously satisfies increased film thickness, high density, and improved magnetic properties (in particular, coercive force, residual magnetic flux density, and tight adhesion) has a rare-earth magnet phase that contains as a main component a nitride which contains Sm and Fe, in which the molded rare-earth magnet has a density of 80% or higher of the theoretical density of a molded magnet constituted of the rare-earth magnet phase, and has a structure in which particles of Zn and/or Mn have been dispersed in the molded magnet.
    Type: Application
    Filed: November 27, 2012
    Publication date: November 27, 2014
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Yoshio Kawashita, Kazuhiko Takashima, Yoshitaka Uehara, Toshikazu Nanbu, Kiyohiro Uramoto
  • Patent number: 8692545
    Abstract: A magnetostrictive stress sensor (11, 12, 13, 14, 15, 16) includes: a magnetic member {20, (107, 108, 109, 110, 111, 112)} having a magnetostriction; a permanent magnet (30, 35, 113) adjacent to the magnetic member; a magnetic sensor (40, 104A, 104B) for detecting a leak magnetic flux on a side opposite to the permanent magnet with respect to the magnetic member, wherein the leak magnetic flux changes according to a stress acting on the magnetic member and the magnetic sensor detects the change of the leak magnetic flux, to thereby detect the stress acting on the magnetic member, and a direction (21, 108A, 109A) of the stress acting on the magnetic member is substantially orthogonal to a magnetizing direction (31, 31, 113A) of the permanent magnet.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: April 8, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Munekatsu Shimada, Hiroshi Sakurai, Yoshio Kawashita, Kiyohiro Uramoto, Toshimitsu Matsuoka, Masao Aihara, Mitsuaki Fujita, Masaharu Ooshima
  • Publication number: 20120153759
    Abstract: A rare earth magnet molding (1) of the present invention includes rare earth magnet particles (2), and an insulating phase (3) present among the rare earth magnet particles. Segregation regions (4) in which at least one element selected from the group consisting of Dy, Tb, Pr and Ho is segregated are distributed in the rare earth magnet particles (2). Accordingly, the rare earth magnet molding that has excellent resistance to heat in motor environments or the like while maintaining high magnetic characteristics (coercive force) is provided.
    Type: Application
    Filed: August 4, 2010
    Publication date: June 21, 2012
    Inventors: Yoshio Kawashita, Kiyohiro Uramoto, Takashi Miyamoto, Yoshiteru Yasuda
  • Publication number: 20100127698
    Abstract: A magnetostrictive stress sensor (11, 12, 13, 14, 15, 16) includes: a magnetic member {20, (107, 108, 109, 110, 111, 112)} having a magnetostriction; a permanent magnet (30, 35, 113) adjacent to the magnetic member; a magnetic sensor (40, 104A, 104B) for detecting a leak magnetic flux on a side opposite to the permanent magnet with respect to the magnetic member, wherein the leak magnetic flux changes according to a stress acting on the magnetic member and the magnetic sensor detects the change of the leak magnetic flux, to thereby detect the stress acting on the magnetic member, and a direction (21, 108A, 109A) of the stress acting on the magnetic member is substantially orthogonal to a magnetizing direction (31, 31, 113A) of the permanent magnet.
    Type: Application
    Filed: February 27, 2008
    Publication date: May 27, 2010
    Inventors: Munekatsu Shimada, Hiroshi Sakurai, Yoshio Kawashita, Kiyohiro Uramoto, Toshimitsu Matsuoka, Masao Aihara, Mitsuaki Fujita, Masaharu Ooshima
  • Patent number: 5899492
    Abstract: An airbag inflator comprises a housing having an interior and gas outlet ports communicating with the interior and open to outside the housing. First and second divider walls separate at least two gas chambers from the interior. A pressurized combustible gaseous mixture is stored in each gas chamber. An initiator is disposed within each gas chamber and actuatable to ignite the pressurized combustible gaseous mixture.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: May 4, 1999
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Jun Okada, Kiyohiro Uramoto