Patents by Inventor Takashi ARASAWA

Takashi ARASAWA 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: 11948717
    Abstract: A coil device includes: a drum core having first and second flange portions and a winding core portion therebetween; a coil wound around the core portion; a plate core connected to first and second flange portions first and second flange surfaces at a first direction side; a first electrode terminal on the first flange portion, one coil end portion electrically connected on the first electrode terminal; and a second electrode terminal on the second flange portion, the other coil end portion electrically connected on the second electrode terminal. The plate core has a first and second projecting portions respectively protruding toward the first and second flange surfaces and having first and second flat surfaces facing the first and second flange surfaces. The drum core and the plate core are connected by abutting and bonding the first and second flange surfaces against the first and second flat surfaces.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: April 2, 2024
    Assignee: TDK CORPORATION
    Inventors: Ryoei Shinohara, Takashi Arasawa, Yoshihiro Kawasaki, Munehito Nishimura
  • Publication number: 20220384093
    Abstract: Disclosed herein is a coil component that includes a drum core; a terminal fitting fixed respectively to the flange part of the drum core; and a wire wound around the winding core part of the drum core. The terminal fitting has a wire connecting part to which the wire is connected and a mounting part having springiness with respect to the drum core. The distance between the flange part and the mounting part is larger than the distance between the flange part and the wire connecting part.
    Type: Application
    Filed: May 31, 2022
    Publication date: December 1, 2022
    Inventors: Hanako YOSHINO, Keigo HIGASHIDA, Daisuke URABE, Takashi ARASAWA, Yugo ASAI
  • 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: 20210065960
    Abstract: A coil device includes: a drum core having first and second flange portions and a winding core portion therebetween; a coil wound around the core portion; a plate core connected to first and second flange portions first and second flange surfaces at a first direction side; a first electrode terminal on the first flange portion, one coil end portion electrically connected on the first electrode terminal; and a second electrode terminal on the second flange portion, the other coil end portion electrically connected on the second electrode terminal. The plate core has a first and second projecting portions respectively protruding toward the first and second flange surfaces and having first and second flat surfaces facing the first and second flange surfaces. The drum core and the plate core are connected by abutting and bonding the first and second flange surfaces against the first and second flat surfaces.
    Type: Application
    Filed: August 25, 2020
    Publication date: March 4, 2021
    Applicant: TDK CORPORATION
    Inventors: Ryoei SHINOHARA, Takashi ARASAWA, Yoshihiro KAWASAKI, Munehito NISHIMURA