Patents by Inventor Tomomi Hiura

Tomomi Hiura 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).

  • Step-up transformer
    Patent number: 5359313
    Abstract: A small and thin step-up transformer suitable for use in an inverter or the like includes: a bobbin formed of an insulating material having a cylindrical winding shaft; a primary winding wound on said winding shaft; and a secondary winding wound in alignment in multi-layers from the inner side to the outer side thereof; and wherein the primary winding and the secondary winding are separated from each other at a portion of the bobbin to be arranged side by side in the central axial direction of the winding shaft and are electromagnetically coupled to each other.
    Type: Grant
    Filed: December 1, 1992
    Date of Patent: October 25, 1994
    Assignee: Toko, Inc.
    Inventors: Shigetoshi Watanabe, Tomomi Hiura, Minoru Nakano, Akira Shinmei