Patents by Inventor Kouyu OHI

Kouyu OHI 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: 11742134
    Abstract: Disclosed herein is a coil component that includes a core, first to fourth terminal electrodes provided on a first flange part, fifth to eighth terminal electrodes provided on a second flange part, first and second wires bifilar wound around a winding core part, and third and fourth wires bifilar wound around the winding core part. One and other ends of the first to eighth wires are connected corresponding one of the first to eighth terminal electrodes. The first and second wires cross each other in a first crossing area. The third and fourth wires cross each other in a second crossing area different from the first crossing area.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: August 29, 2023
    Assignee: TDK CORPORATION
    Inventors: Masato Otsuka, Kouyu Ohi, Yusuke Kimoto, Setu Tsuchida
  • Patent number: 11657956
    Abstract: A coil device 1 including a winding core 11 and flanges 12, 12, wires 31 to 34 wound around the winding core 11 and having one end located at the flanges 12, 12, and terminal electrodes 51 to 56 provided on the flanges 12, 12. The terminal electrodes 51 to 56 includes a wire connecting part 63a, 63b to which the one end of the wires 31 to 34 are connected and a mounting part 65 formed continuously to the wire connecting part 63a, 63b and to be positioned away from an axis of the winding core with respect to the wire connecting parts 63a, 63b along an outer peripheral direction of the flanges 12, 12.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: May 23, 2023
    Assignee: TDK CORPORATION
    Inventors: Tasuku Mikogami, Kouyu Ohi, Yusuke Kimoto
  • Publication number: 20230093320
    Abstract: To provide a coil device having high bonding strength and bonding reliability. The coil device 1 has a core member 10 having a winding core and a flange 12, a wire 32 wound around the winding core, and a terminal electrode 52 connected with a lead 32a of a wire 32 provided to the flange 12; and an easy bonding layer 70 is formed on the surface of the terminal electrode 52 connected with the lead 32a in a stripe form 70a. the stripe form each bonding layer 70a is formed as a laser mark 71. In the coil device 1, a residue of coating film 78 which may be generated when the lead 32a of the wire 32 is connected to the mounting part 65 of the terminal electrode 52 is removed by laser.
    Type: Application
    Filed: November 29, 2022
    Publication date: March 23, 2023
    Applicant: TDK CORPORATION
    Inventors: Kouyu OHI, Tasuku MIKOGAMI, Shuhei SOMEYA, Yusuke KIMOTO
  • Patent number: 11610726
    Abstract: A coil device having high bonding strength and bonding reliability has a core member including a winding core and a flange, wires wound around the winding core and one end being positioned at the flange, and terminal electrodes provided to the flange. Each of the terminal electrodes has a wire connecting part where one ends of the wires are connected, and a mounting part continuously formed with the wire connecting part at the side close to the winding core with respect to the wire connecting part along the axis direction of the winding core. The wire connecting part is provided at a position lower than the mounting part along the height direction of the flange.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: March 21, 2023
    Assignee: TDK CORPORATION
    Inventors: Tasuku Mikogami, Kouyu Ohi, Yusuke Kimoto
  • Patent number: 11610713
    Abstract: A coil device comprising, the core body having a coil core part and a core bottom face, and a coil part forming spiral conductive pathway around the coil core part. A metal electrode is formed at the core bottom face, and the wire ends which are the conductive pathway of the coil part are formed at the metal electrode, and a part of the surface of the metal electrode is covered by the conductive resin electrode.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: March 21, 2023
    Assignee: TDK CORPORATION
    Inventors: Katsumi Kobayashi, Kouyu Ohi
  • Patent number: 11545294
    Abstract: To provide a coil device having high bonding strength and bonding reliability. The coil device 1 has a core member 10 having a winding core and a flange 12, a wire 32 wound around the winding core, and a terminal electrode 52 connected with a lead 32a of a wire 32 provided to the flange 12; and an easy bonding layer 70 is formed on the surface of the terminal electrode 52 connected with the lead 32a in a stripe form 70a. the stripe form each bonding layer 70a is formed as a laser mark 71. In the coil device 1, a residue of coating film 78 which may be generated when the lead 32a of the wire 32 is connected to the mounting part 65 of the terminal electrode 52 is removed by laser.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: January 3, 2023
    Assignee: TDK CORPORATION
    Inventors: Kouyu Ohi, Tasuku Mikogami, Shuhei Someya, Yusuke Kimoto
  • Patent number: 11521787
    Abstract: Disclosed herein is a coil component that includes: a first magnetic core extending in the first direction and around which the wires are wound; a second magnetic core covering the first magnetic core from one side in a third direction; first and second terminal electrodes connected respectively to one ends of the first and second wires; and third and fourth terminal electrodes connected respectively to other ends of the first and second wires. The first and second electrodes are arranged in the first direction along the first surface of the first magnetic core, and the third and fourth terminal electrodes are arranged in the first direction along the second surface of the first magnetic core.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: December 6, 2022
    Assignee: TDK CORPORATION
    Inventors: Shuhei Someya, Kouyu Ohi, Tasuku Mikogami
  • Publication number: 20220301766
    Abstract: Disclosed herein is a coil component that includes: a first magnetic core extending in the first direction and around which the wires are wound; a second magnetic core having a first wall surface part covering the first magnetic core from one side in the second direction, a second wall surface part covering the first magnetic core from other side in the second direction, and a third wall surface part covering the first magnetic core from one side in the third direction; first and second terminal electrodes connected respectively to one ends of the wires and arranged in the first direction along the first wall surface part; and third and fourth terminal electrodes connected respectively to other ends of the wires and arranged in the first direction along the second wall surface part.
    Type: Application
    Filed: June 7, 2022
    Publication date: September 22, 2022
    Applicant: TDK CORPORATION
    Inventors: Shuhei Someya, Kouyu Ohi, Tasuku Mikogami
  • Patent number: 11424070
    Abstract: Disclosed herein is a coil component that includes: a first magnetic core extending in the first direction and around which the wires are wound; a second magnetic core having a first wall surface part covering the first magnetic core from one side in the second direction, a second wall surface part covering the first magnetic core from other side in the second direction, and a third wall surface part covering the first magnetic core from one side in the third direction; first and second terminal electrodes connected respectively to one ends of the wires and arranged in the first direction along the first wall surface part; and third and fourth terminal electrodes connected respectively to other ends of the wires and arranged in the first direction along the second wall surface part.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: August 23, 2022
    Assignee: TDK CORPORATION
    Inventors: Shuhei Someya, Kouyu Ohi, Tasuku Mikogami
  • Publication number: 20220076879
    Abstract: A coil device includes a core having a flange portion connected to winding core portions; wires wound around the winding core portions; and terminal electrodes fixed to the core. The terminal electrodes have wire connectable portions to which lead portions of the wires are connected. In the wire connectable portions, the lead portions are connected to the terminal electrodes at positions separated from an upper surface of the flange portion by a predetermined height.
    Type: Application
    Filed: September 2, 2021
    Publication date: March 10, 2022
    Applicant: TDK CORPORATION
    Inventors: Takashi ARASAWA, Kouyu OHI, Yusuke KIMOTO, Tomoya TSUBAI
  • Publication number: 20210233702
    Abstract: Disclosed herein is a coil component that includes a core, first to fourth terminal electrodes provided on a first flange part, fifth to eighth terminal electrodes provided on a second flange part, first and second wires bifilar wound around a winding core part, and third and fourth wires bifilar wound around the winding core part. One and other ends of the first to eighth wires are connected corresponding one of the first to eighth terminal electrodes. The first and second wires cross each other in a first crossing area. The third and fourth wires cross each other in a second crossing area different from the first crossing area.
    Type: Application
    Filed: January 27, 2021
    Publication date: July 29, 2021
    Inventors: Masato OTSUKA, Kouyu OHI, Yusuke KIMOTO, Setu TSUCHIDA
  • Patent number: 10964465
    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: February 22, 2019
    Date of Patent: March 30, 2021
    Assignee: TDK CORPORATION
    Inventors: Nobuo Takagi, Kouyu Ohi, Tasuku Mikogami, Setu Tsuchida
  • Publication number: 20210050135
    Abstract: A coil device comprising, the core body having a coil core part and a core bottom face, and a coil part forming spiral conductive pathway around the coil core part. A metal electrode is formed at the core bottom face, and the wire ends which are the conductive pathway of the coil part are formed at the metal electrode, and a part of the surface of the metal electrode is covered by the conductive resin electrode.
    Type: Application
    Filed: November 4, 2020
    Publication date: February 18, 2021
    Applicant: TDK CORPORATION
    Inventors: Katsumi KOBAYASHI, Kouyu OHI
  • Patent number: 10861631
    Abstract: A coil device includes a core body having a coil core part and a core bottom face, The coil device further includes a coil part forming spiral conductive pathway around the coil core part. A metal electrode is formed at the core bottom face, and the wire ends which are the conductive pathway of the coil part are formed at the metal electrode, and a part of the surface of the metal electrode is covered by a conductive resin electrode.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: December 8, 2020
    Assignee: TDK CORPORATION
    Inventors: Katsumi Kobayashi, Kouyu Ohi
  • Patent number: 10770219
    Abstract: Disclosed herein is a coil component that includes a drum core having a winding core part and first and second flange parts provided on both sides of the winding core part; a wire wound around the winding core part; a plurality of terminal electrodes connected with end portions of the wire, each of the terminal electrodes being provided on an associated one of the first and second flange parts; and a top plate fixed to the first and second flange parts. The top plate includes a magnetic layer comprising magnetic powder and binder resin, and a resin layer having a smaller content of the magnetic powder than that of the magnetic layer. The resin layer is positioned between the first and second flange parts and the magnetic layer.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: September 8, 2020
    Assignee: TDK CORPORATION
    Inventors: Yoshihiro Kawasaki, Kouyu Ohi, Hirohumi Asou, Syun Ashizawa
  • Publication number: 20200111601
    Abstract: To provide a coil device having high bonding strength and bonding reliability. The coil device 1 has a core member 10 having a winding core and a flange 12, a wire 32 wound around the winding core, and a terminal electrode 52 connected with a lead 32a of a wire 32 provided to the flange 12; and an easy bonding layer 70 is formed on the surface of the terminal electrode 52 connected with the lead 32a in a stripe form 70a. the stripe form each bonding layer 70a is formed as a laser mark 71. In the coil device 1, a residue of coating film 78 which may be generated when the lead 32a of the wire 32 is connected to the mounting part 65 of the terminal electrode 52 is removed by laser.
    Type: Application
    Filed: September 20, 2019
    Publication date: April 9, 2020
    Applicant: TDK CORPORATION
    Inventors: Kouyu OHI, Tasuku MIKOGAMI, Shuhei SOMEYA, Yusuke KIMOTO
  • Publication number: 20200111602
    Abstract: A coil device having high bonding strength and bonding reliability has a core member including a winding core and a flange, wires wound around the winding core and one end being positioned at the flange, and terminal electrodes provided to the flange. Each of the terminal electrodes has a wire connecting part where one ends of the wires are connected, and a mounting part continuously formed with the wire connecting part at the side close to the winding core with respect to the wire connecting part along the axis direction of the winding core. The wire connecting part is provided at a position lower than the mounting part along the height direction of the flange.
    Type: Application
    Filed: September 20, 2019
    Publication date: April 9, 2020
    Applicant: TDK CORPORATION
    Inventors: Tasuku MIKOGAMI, Kouyu OHI, Yusuke KIMOTO
  • Publication number: 20200098511
    Abstract: A coil device 1 including a winding core 11 and flanges 12, 12, wires 31 to 34 wound around the winding core 11 and having one end located at the flanges 12, 12, and terminal electrodes 51 to 56 provided on the flanges 12, 12. The terminal electrodes 51 to 56 includes a wire connecting part 63a, 63b to which the one end of the wires 31 to 34 are connected and a mounting part 65 formed continuously to the wire connecting part 63a, 63b and to be positioned away from an axis of the winding core with respect to the wire connecting parts 63a, 63b along an outer peripheral direction of the flanges 12, 12.
    Type: Application
    Filed: September 16, 2019
    Publication date: March 26, 2020
    Applicant: TDK CORPORATION
    Inventors: Tasuku MIKOGAMI, Kouyu OHI, Yusuke KIMOTO
  • Publication number: 20190385786
    Abstract: Disclosed herein is a coil component that includes: a first magnetic core extending in the first direction and around which the wires are wound; a second magnetic core having a first wall surface part covering the first magnetic core from one side in the second direction, a second wall surface part covering the first magnetic core from other side in the second direction, and a third wall surface part covering the first magnetic core from one side in the third direction; first and second terminal electrodes connected respectively to one ends of the wires and arranged in the first direction along the first wall surface part; and third and fourth terminal electrodes connected respectively to other ends of the wires and arranged in the first direction along the second wall surface part.
    Type: Application
    Filed: June 18, 2019
    Publication date: December 19, 2019
    Applicant: TDK CORPORATION
    Inventors: Shuhei SOMEYA, Kouyu Ohi, Tasuku Mikogami
  • Publication number: 20190385783
    Abstract: Disclosed herein is a coil component that includes: a first magnetic core extending in the first direction and around which the wires are wound; a second magnetic core covering the first magnetic core from one side in a third direction; first and second terminal electrodes connected respectively to one ends of the first and second wires; and third and fourth terminal electrodes connected respectively to other ends of the first and second wires. The first and second electrodes are arranged in the first direction along the first surface of the first magnetic core, and the third and fourth terminal electrodes are arranged in the first direction along the second surface of the first magnetic core.
    Type: Application
    Filed: June 18, 2019
    Publication date: December 19, 2019
    Applicant: TDK CORPORATION
    Inventors: Shuhei SOMEYA, Kouyu OHI, Tasuku MIKOGAMI