Patents by Inventor Katsuhiro ISHIGAKI

Katsuhiro ISHIGAKI 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: 20220139602
    Abstract: A coil device includes a coil portion and a bobbin. The coil portion includes wires connectable to terminals. The bobbin includes a first terminal block and a second terminal block formed on both sides in a winding axis direction of a cylindrical portion for forming the coil portion around the cylindrical portion. A length of the first terminal block in a width direction perpendicular to the winding axis direction is larger than that of the second terminal block in the width direction.
    Type: Application
    Filed: November 2, 2021
    Publication date: May 5, 2022
    Applicant: TDK CORPORATION
    Inventors: Katsuhiro ISHIGAKI, Hideaki HARATA, Shoichi TANI
  • Patent number: 10096421
    Abstract: A coil device includes a bobbin, a first winding part, and a second winding part. A partition portion is formed on an outer peripheral surface of the bobbin. The first winding part is wound around the outer peripheral surface at one side of the partition portion. The second winding part is wound around the outer peripheral surface at the other side of the partition portion and has an inner winding layer and an outer winding layer located farther to the outer peripheral surface at the other side than the inner winding layer.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: October 9, 2018
    Assignee: TDK CORPORATION
    Inventors: Masaaki Iwakura, Katsuhiro Ishigaki, Hiroshi Maeda, Satoshi Shinbo, Nobuo Kitajima
  • Publication number: 20170352474
    Abstract: A coil device includes a bobbin, a first winding part, and a second winding part. A partition portion is formed on an outer peripheral surface of the bobbin. The first winding part is wound around the outer peripheral surface at one side of the partition portion. The second winding part is wound around the outer peripheral surface at the other side of the partition portion and has an inner winding layer and an outer winding layer located farther to the outer peripheral surface at the other side than the inner winding layer.
    Type: Application
    Filed: August 22, 2017
    Publication date: December 7, 2017
    Inventors: Masaaki IWAKURA, Katsuhiro ISHIGAKI, Hiroshi MAEDA, Satoshi SHINBO, Nobuo KITAJIMA
  • Patent number: 9793044
    Abstract: A coil device includes a bobbin, a first winding part, and a second winding part. A partition portion is formed on an outer peripheral surface of the bobbin. The first winding part is wound around the outer peripheral surface at one side of the partition portion. The second winding part is wound around the outer peripheral surface at the other side of the partition portion and has an inner winding layer and an outer winding layer located farther to the outer peripheral surface at the other side than the inner winding layer.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: October 17, 2017
    Assignee: TDK Corporation
    Inventors: Masaaki Iwakura, Katsuhiro Ishigaki, Hiroshi Maeda, Satoshi Shinbo, Nobuo Kitajima
  • Publication number: 20160293317
    Abstract: A coil device includes a bobbin, a first winding part, and a second winding part. A partition portion is formed on an outer peripheral surface of the bobbin. The first winding part is wound around the outer peripheral surface at one side of the partition portion. The second winding part is wound around the outer peripheral surface at the other side of the partition portion and has an inner winding layer and an outer winding layer located farther to the outer peripheral surface at the other side than the inner winding layer.
    Type: Application
    Filed: March 21, 2016
    Publication date: October 6, 2016
    Inventors: Masaaki IWAKURA, Katsuhiro ISHIGAKI, Hiroshi MAEDA, Satoshi SINBO, Nobuo KITAJIMA
  • Patent number: 8451081
    Abstract: A coil assembly having a simplified bobbin structure and facilitating connection of a draw-out portion of a wire to a pin terminal. A coil assembly includes first and second pin support portions protruding in a protruding direction from a terminal base. First and second pin terminals protrude in the protruding direction from free end faces of the first and second pin support portions, respectively. The draw-out portion is electrically connected to an associated one of the pin terminals. The second pin support portion provides a protruding length from the terminal base greater than that of the first pin support portion, and the free end face of the second pin support portion is positioned downstream, in the protruding direction, of an imaginary linear draw-out portion directed linearly from the wire engaging portion to the first pin terminal, such that the second pin support portion is positioned and sized to intersect with the imaginary linear draw-out portion.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: May 28, 2013
    Assignee: TDK Corporation
    Inventors: Katsumi Kobayashi, Katsuhiro Ishigaki
  • Publication number: 20110215892
    Abstract: A coil assembly having a simplified bobbin structure and facilitating connection of a draw-out portion of a wire to a pin terminal. A coil assembly includes first and second pin support portions protruding in a protruding direction from a terminal base. First and second pin terminals protrude in the protruding direction from free end faces of the first and second pin support portions, respectively. The draw-out portion is electrically connected to an associated one of the pin terminals. The second pin support portion provides a protruding length from the terminal base greater than that of the first pin support portion, and the free end face of the second pin support portion is positioned downstream, in the protruding direction, of an imaginary linear draw-out portion directed linearly from the wire engaging portion to the first pin terminal, such that the second pin support portion is positioned and sized to intersect with the imaginary linear draw-out portion.
    Type: Application
    Filed: January 25, 2011
    Publication date: September 8, 2011
    Applicant: TDK CORPORATION
    Inventors: Katsumi KOBAYASHI, Katsuhiro ISHIGAKI