Patents by Inventor Yoshizumi Fukui

Yoshizumi Fukui 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: 7609140
    Abstract: There is provided a molded body having high fixing strength between a magnetic mold material and an external electrode. The molded body uses the magnetic mold material comprising at least 65 vol % of magnetic powder and up to 35 vol % of resin and the external electrode that has pits and projections on a surface that makes contact with the magnetic mold material. The external electrode and the magnetic mold material are integrally-molded such that at least a portion of the external electrode is exposed at at least one surface of the molded body. Spacing between the pit and projection of the external electrode is smaller than the maximum particle size of the magnetic powder.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: October 27, 2009
    Assignee: Toko, Inc.
    Inventor: Yoshizumi Fukui
  • Publication number: 20090250836
    Abstract: Disclosed is a method oft by using a plastic molding process, encapsulating an air-core coil with a moldable magnetic resin material prepared by kneading a mixture of a magnetic powder and a resin. The method comprises the steps of (a) preparing a molding die assembly which includes a plurality of dies adapted to define a cavity therewithin, and a positioning pin adapted to be movable in a vertical or horizontal direction within the cavity, (b) arranging the air-core coil at a given position within the cavity by the positioning pin, (c) charging the moldable magnetic resin material into the cavity and moving the positioning pin to a given retracted position in a course of the charging.
    Type: Application
    Filed: April 3, 2009
    Publication date: October 8, 2009
    Applicant: Toko, Inc.
    Inventor: Yoshizumi FUKUI
  • Publication number: 20090184791
    Abstract: There is provided a molded body having high fixing strength between a magnetic mold material and an external electrode. The molded body uses the magnetic mold material comprising at least 65 vol % of magnetic powder and up to 35 vol % of resin and the external electrode that has pits and projections on a surface that makes contact with the magnetic mold material. The external electrode and the magnetic mold material are integrally-molded such that at least a portion of the external electrode is exposed at at least one surface of the molded body. Spacing between the pit and projection of the external electrode is smaller than the maximum particle size of the magnetic powder.
    Type: Application
    Filed: January 14, 2009
    Publication date: July 23, 2009
    Applicant: Toko, Inc.
    Inventor: Yoshizumi FUKUI