Patents by Inventor Yasumasa Hashimota

Yasumasa Hashimota 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).

  • Current detecting apparatus
    Patent number: 4513339
    Abstract: A current detecting device includes high frequency oscillation detecting circuits which, when a saturable reactor oscillates at a high frequency, detect the high frequency oscillation of the reactor and generate a high level output. Thus, when a large current flows through the reactor and the magnetization characteristic of the reactor is varied to generate a normal detection output, the reactor oscillation due to the large current is detected and an operating circuit for driving an external device is energized.
    Type: Grant
    Filed: August 29, 1983
    Date of Patent: April 23, 1985
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Yoshihisa Ishigami, Yasumasa Hashimota, Tadaharu Kitado, Hiromi Nishimura, Tetsuo Mori