Patents by Inventor Masahiko Yokoyama

Masahiko Yokoyama 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).

  • Delay Line
    Publication number: 20090009264
    Abstract: A delay line having a first delay circuit and a second delay circuit. The first delay circuit consists of a band-pass delay line having a first input terminal and an output terminal and other delay lines. The second delay circuit has a hybrid coupler equipped with a second input terminal, a first output terminal, a second output terminal, and an isolation terminal, a first reactance section connected with the first output terminal, and a second reactance section connected with the second output terminal. Furthermore, the output terminal of the first delay circuit is electrically connected with the second input terminal of the hybrid coupler of the second delay circuit.
    Type: Application
    Filed: February 16, 2006
    Publication date: January 8, 2009
    Applicant: SOSHIN ELECTRIC CO. LTD.
    Inventors: Hiroyuki Morikaku, Itsuaki Katsumata, Masahiko Yokoyama
  • Variable delay line using variable reactance devices to provide reflected delay signals
    Patent number: 7336143
    Abstract: First and second reactance parts are connected with the first and second output terminals of a hybrid coupler. The first and second reactance parts have a substantially identical reactance X.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: February 26, 2008
    Assignee: Soshin Electric Co., Ltd.
    Inventors: Itsuaki Katsumata, Tokumi Kobayashi, Masahiko Yokoyama