Patents by Inventor Wataru Tabata

Wataru Tabata 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).

  • RESONANCE TRANSFORMER AND POWER SUPPLY UNIT EMPLOYING IT
    Publication number: 20100033284
    Abstract: A resonance type transformer has an O-shaped magnetic core, a primary winding, and a secondary winding. The O-shaped magnetic core is formed of a first split magnetic core and a second split magnetic core, and has a first magnetic leg provided with a first magnetic gap therein and a second magnetic leg opposite the first magnetic leg. The primary winding is wound on the outer periphery of the first magnetic so as to cover at least the first magnetic gap. The secondary winding is wound on the outer periphery of the second magnetic leg.
    Type: Application
    Filed: February 22, 2006
    Publication date: February 11, 2010
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Kazuhiko Yamakami, Wataru Tabata, Hidenori Uematsu, Hamazou Hagino, Chiaki Tachioka
  • Converter transformer
    Patent number: 6064291
    Abstract: The present invention provides a small, light-weight converter transformer of high efficiency which has an excellent noise characteristic, a high coupling and good output voltage characteristic, low temperature-rise and a high reliability, for use in a switching power supply to be built in an electronic appliance.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: May 16, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shiro Urabe, Wataru Tabata