Patents by Inventor Nobuo Takagi

Nobuo Takagi 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: 20200135384
    Abstract: A pulse transformer includes a drum core having a winding core, a first flange provided at one end of the winding core in a first direction, and a second flange provided at the other end of the winding core in the first direction. The pulse transformer also includes a plurality of the first electrodes provided in the first flange and arranged in a second direction substantially perpendicular to the first direction, a plurality of second electrodes provided in the second flange and arranged in the second direction, and a plurality of wires wound around the winding core. A length of the pulse transformer in the first and second directions are substantially equal, and a length of the pulse transformer in a third direction substantially perpendicular to the first and second directions is smaller than the length of the pulse transformer in the first and second directions.
    Type: Application
    Filed: December 23, 2019
    Publication date: April 30, 2020
    Applicant: TDK CORPORATION
    Inventors: Nobuo TAKAGI, Setu TSUCHIDA, Tasuku MIKOGAMI
  • Patent number: 10577396
    Abstract: An object of the present invention is to conduct a search for a compound to be arranged at a terminal of a peptide nucleic acid effective in detecting a single nucleotide polymorphism. Provided is a tolan compound represented by the following formula (1): wherein R1 represents a phenyl group or a naphthyl group, the phenyl group may have 1 to 5 substituents that are identical to or different from each other, and the naphthyl group may have 1 to 7 substituents that are identical to or different from each other.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: March 3, 2020
    Assignee: Osaka University
    Inventors: Kunihiro Kaihatsu, Nobuo Kato, Kenji Takagi
  • Patent number: 10553348
    Abstract: A pulse transformer includes a drum core having a winding core, a first flange provided at one end of the winding core in a first direction, and a second flange provided at the other end of the winding core in the first direction. First, second, third, and fourth terminal electrodes are provided in the first flange, and fifth, sixth, seventh, and eighth terminal electrodes are provided in the second flange. First, second, third, and fourth wires each have one end connected to a different one of the first to fourth terminal electrodes and the other end connected to a different one of the fifth to eighth terminal electrodes. A length of the drum core in the first direction and the second direction, perpendicular to the first direction, are substantially equal to one another, such that a planar shape of a mounting region of the pulse transformer is substantially square.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: February 4, 2020
    Assignee: TDK
    Inventors: Nobuo Takagi, Setu Tsuchida, Tasuku Mikogami
  • Patent number: 10497509
    Abstract: A coil device comprising; a winding coil including Cu and having a winding part and an extension line part which is pulled out from said winding part, a pair of electrodes made of a conductive material having, a connecting wire part having a connecting wire face connected with the extension line part and a protective face sandwiching said extension line part with said connecting wire face, and a base part provided with a mounting base face at one of the faces of the base and connected to said connecting wire part, a magnetic part including a magnetic material and covering at least said winding part and said connecting wire part.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: December 3, 2019
    Assignee: TDK CORPORATION
    Inventors: Nobuo Takagi, Kazuteru Kakizaki, Setu Tsuchida
  • Publication number: 20190326042
    Abstract: A permanent magnet includes a magnet member, and an adhesive layer covering a surface of the magnet member, wherein the adhesive layer includes a resin and a plurality of foaming agents, and wherein at least part of the foaming agents protrudes from a surface of the resin.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 24, 2019
    Applicant: TDK Corporation
    Inventors: Nobuo TAKAGI, Yousuke HITOMI
  • Patent number: 10418174
    Abstract: Disclosed herein is a coil component that includes a drum core including a pair of flange portions and a winding core portion positioned between the flange portions, a plurality of terminal electrodes formed on the flange portions, and a plurality of wires wound around the winding core portion, each end of the wires being electrically connected to an associated one of the terminal electrodes. Each of the flange portions has an inner side surface connected to the winding core portion and an outer side surface opposite to the inner side surface, the outer side surface has a plurality of ridges and at least one groove, and the terminal electrodes are formed on at least the ridges of the outer side surfaces such that the terminal electrodes are isolated from each other by the groove.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: September 17, 2019
    Assignee: TDK CORPORATION
    Inventors: Tasuku Mikogami, Nobuo Takagi, Kouyu Ohi, Syun Ashizawa, Setu Tsuchida
  • Publication number: 20190272944
    Abstract: A coil device comprising; a winding coil including Cu and having a winding part and an extension line part which is pulled out from said winding part, a pair of electrodes made of a conductive material having, a connecting wire part having a connecting wire face connected with the extension line part and a protective face sandwiching said extension line part with said connecting wire face, and a base part provided with a mounting base face at one of the faces of the base and connected to said connecting wire part, a magnetic part including a magnetic material and covering at least said winding part and said connecting wire part.
    Type: Application
    Filed: April 30, 2019
    Publication date: September 5, 2019
    Applicant: TDK CORPORATION
    Inventors: Nobuo TAKAGI, Kazuteru KAKIZAKI, Setu TSUCHIDA
  • Patent number: 10366823
    Abstract: Disclosed herein is a coil component that includes a drum-shaped core having a winding part, first and second terminal electrodes provided on the first flange part of the drum-shaped core, third and fourth terminal electrodes provided on the second flange part of the drum-shaped core, a first coil wound around the winding core part connected between the first and third terminal electrodes, and a second coil wound around the winding core part connected between the second and fourth terminal electrodes. The first and second coils cross each other at the first drawing part positioned between the winding part and the first flange part. The first coil is constituted by two or more wires.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: July 30, 2019
    Assignee: TDK CORPORATION
    Inventors: Nobuo Takagi, Kouyu Ohi, Tasuku Mikogami, Setu Tsuchida
  • Patent number: 10347416
    Abstract: Disclosed herein is a coil component that includes: a drum core including a winding core part, a first flange part provided at one end of the winding core part in an axial direction of the winding core part, and a second flange part provided at other end of the winding core part in the axial direction of the winding core part; first, second, third, and fourth terminal electrodes provided on the first flange part; fifth, sixth, and seventh terminal electrodes provided on the second flange part; and first, second, third, and fourth wires wound around the winding core part, wherein one ends of the first to fourth wires are each connected to any one of the first to fourth terminal electrodes, and wherein other ends of the first to fourth wires are each connected to any one of the fifth to seventh terminal electrodes.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: July 9, 2019
    Assignee: TDK CORPORATION
    Inventors: Tasuku Mikogami, Nobuo Takagi
  • Publication number: 20190189320
    Abstract: The coil device comprises the magnetic core comprising the axial part and the magnetic core end part connecting to the axial part, the coil part formed by winding the wire around the axial part, and the electrode part provided at the magnetic core end part and made of good conductor. Said electrode part comprises the fixing surface fixed with a wire end part of said wire, and the fixing surface is provided on a side surface which does not intersect with a center axis of said coil part at said magnetic core end part. Said fixing surface is inclined to a direction, away from said center axis with respect to a direction towards said magnetic core end part from said axial part.
    Type: Application
    Filed: February 22, 2019
    Publication date: June 20, 2019
    Inventors: Nobuo TAKAGI, Kouyu Ohi, Tasuku Mikogami, Setu Tsuchida
  • Patent number: 10319514
    Abstract: A coil device comprising; a winding coil including Cu and having a winding part and an extension line part which is pulled out from said winding part, a pair of electrodes made of a conductive material having, a connecting wire part having a connecting wire face connected with the extension line part and a protective face sandwiching said extension line part with said connecting wire face, and a base part provided with a mounting base face at one of the faces of the base and connected to said connecting wire part, a magnetic part including a magnetic material and covering at least said winding part and said connecting wire part.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: June 11, 2019
    Assignee: TDK CORPORATION
    Inventors: Nobuo Takagi, Kazuteru Kakizaki, Setu Tsuchida
  • Patent number: 10319512
    Abstract: Disclosed herein is a coil component that includes a drum-shaped core having a winding part, first and second terminal electrodes provided on the first flange part of the drum-shaped core, third and fourth terminal electrodes provided on the second flange part of the drum-shaped core, a first coil wound around the winding core part connected between the first and third terminal electrodes, and a second coil wound around the winding core part connected between the second and fourth terminal electrodes. The first and second coils cross each other at the first drawing part positioned between the winding part and the first flange part. The first coil is constituted by two or more wires.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: June 11, 2019
    Assignee: TDK CORPORATION
    Inventors: Nobuo Takagi, Kouyu Ohi, Tasuku Mikogami, Setu Tsuchida
  • Patent number: 10312013
    Abstract: Disclosed herein is a coil component that includes a drum core having a winding core and first and second flange portions provided at opposite ends of the winding core; a wire wound around the winding core; terminal electrodes provided in the first and second flange portions, the terminal electrodes being connected to ends of the wire; and a magnetic top plate made of magnetic-powder containing resin in which soft magnetic metal powder having a flat shape is mixed in binder resin, the magnetic top plate being fixed to the first and second flange portions.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: June 4, 2019
    Assignee: TDK CORPORATION
    Inventors: Yoshihiro Kawasaki, Syun Ashizawa, Hirohumi Asou, Nobuo Takagi
  • Publication number: 20190164673
    Abstract: The present invention aims to provide a novel magnet, whose surface's insulating property can be increased, and a motor using the same. The present invention provides a magnet comprising a magnet element containing a rare earth element R, a transition metal element T and boron B, and a phosphate layer including manganese-containing phosphate, wherein the phosphate layer is provided on the surface of the magnet element, and the thickness of the phosphate layer is 0.5 ?m or more.
    Type: Application
    Filed: November 19, 2018
    Publication date: May 30, 2019
    Applicant: TDK Corporation
    Inventor: Nobuo TAKAGI
  • Publication number: 20190164683
    Abstract: A pulse transformer includes a drum core having a winding core, a first flange provided at one end of the winding core in a first direction, and a second flange provided at the other end of the winding core in the first direction. First, second, third, and fourth terminal electrodes are provided in the first flange, and fifth, sixth, seventh, and eighth terminal electrodes are provided in the second flange. First, second, third, and fourth wires each have one end connected to a different one of the first to fourth terminal electrodes and the other end connected to a different one of the fifth to eighth terminal electrodes. A length of the drum core in the first direction and the second direction, perpendicular to the first direction, are substantially equal to one another, such that a planar shape of a mounting region of the pulse transformer is substantially square.
    Type: Application
    Filed: January 31, 2019
    Publication date: May 30, 2019
    Applicant: TDK CORPORATION
    Inventors: Nobuo TAKAGI, Setu TSUCHIDA, Tasuku MIKOGAMI
  • Patent number: 10256020
    Abstract: The coil device comprises the magnetic core comprising the axial part and the magnetic core end part connecting to the axial part, the coil part formed by winding the wire around the axial part, and the electrode part provided at the magnetic core end part and made of good conductor. Said electrode part comprises the fixing surface fixed with a wire end part of said wire, and the fixing surface is provided on a side surface which does not intersect with a center axis of said coil part at said magnetic core end part. Said fixing surface is inclined to a direction away from said center axis with respect to a direction towards said magnetic core end part from said axial part.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: April 9, 2019
    Assignee: TDK CORPORATION
    Inventors: Nobuo Takagi, Kouyu Ohi, Tasuku Mikogami, Setu Tsuchida
  • Patent number: 10229780
    Abstract: A pulse transformer is provided with a drum core including a winding core and first and second flanges, and wires wound around the winding core. First terminal electrodes and a second center tap are provided on the first flange, and second terminal electrodes and a first center tap are provided on the second flange. Each end of the wires is connected to a corresponding one of the first terminal electrodes, the second center tap, the second terminal electrodes, and the first center tap. A length of the drum core in the X direction is equal to a length of the drum core in the Y direction, so that the shape of the mounting region on the printed circuit board is not changed even after being rotated by 90°.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: March 12, 2019
    Assignee: TDK CORPORATION
    Inventors: Nobuo Takagi, Setu Tsuchida, Tasuku Mikogami
  • Patent number: 10210988
    Abstract: Disclosed herein is a coil component that includes a drum core having a winding core and first and second flange portions provided at opposite ends of the winding core; a wire wound around the winding core; terminal electrodes provided in the first and second flange portions, the terminal electrodes being connected to ends of the wire; and a magnetic top plate made of magnetic-powder containing resin in which magnetic powder is mixed in binder resin, the magnetic top plate being fixed to the first and second flange portions. The magnetic top plate has a lower surface facing the first and second flange portions and an upper surface located opposite to the lower surface. The density of the binder resin is higher in a surface layer part on a side of the lower surface than in a surface layer part on a side of the upper surface.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: February 19, 2019
    Assignee: TDK CORPORATION
    Inventors: Yoshihiro Kawasaki, Syun Ashizawa, Hirohumi Asou, Nobuo Takagi
  • Patent number: 10186376
    Abstract: Disclosed herein is a coil component that includes: a drum core including a first flange portion, a second flange portion and a winding core portion positioned between the first and second flange portions; a plurality of coated conductive wires forming a first winding layer wound around the winding core portion and a second winding layer wound around the winding core portion with an intervention of the first winding layer; and a resin coating layer covering the coated conductive wires. A maximum space between the coated conductive wires in the first winding layer is narrower than a diameter of the coated conductive wires.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: January 22, 2019
    Assignee: TDK CORPORATION
    Inventors: Tasuku Mikogami, Nobuo Takagi, Kouyu Ohi, Syun Ashizawa, Setu Tsuchida
  • Patent number: 10186368
    Abstract: Disclosed herein is a coil component that includes a base, a metal wire that is wound around the base and contains copper, and a terminal electrode that is provided on the base and contains nickel and tin. The terminal electrode includes a wire connection area to which an end portion of the metal wire is connected and which contains a CuNi alloy or a CuNiSn alloy, and a mounting area which is different from the wire connection area. The wire connection area includes a portion that contains a small amount of tin than the mounting area.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: January 22, 2019
    Assignee: TDK CORPORATION
    Inventors: Nobuo Takagi, Setu Tsuchida, Koji Shimura