Patents by Inventor Yoshiyuki TOKIWA

Yoshiyuki TOKIWA 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).

  • Positioning system
    Patent number: 10379216
    Abstract: A measurement apparatus outputs from a first antenna pair transmission signals (St11) and (St12) whose phase difference (??1) changes over time. A target object simultaneously receives the transmission signals (St11) and (St12) from a target-side antenna and returns to the measurement apparatus information (D?) according to the positional relationship between the target object and the measurement apparatus determined from a reception signal (Sr1). The measurement apparatus outputs from a second antenna pair transmission signals (St21) and (St22) whose phase difference (??2) changes over time. The target object simultaneously receives the transmission signals (St21) and (St22) from the target-side antenna and returns to the measurement apparatus the information (D?) corresponding to the positional relationship between the target object and the measurement apparatus determined from a reception signal (Sr2).
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: August 13, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Koichi Takizawa, Yoshiharu Yoshii, Yoshiyuki Tokiwa
  • POSITIONING SYSTEM
    Publication number: 20170016985
    Abstract: A measurement apparatus outputs from a first antenna pair transmission signals (St11) and (St12) whose phase difference (??1) changes over time. A target object simultaneously receives the transmission signals (St11) and (St12) from a target-side antenna and returns to the measurement apparatus information (D?) according to the positional relationship between the target object and the measurement apparatus determined from a reception signal (Sr1). The measurement apparatus outputs from a second antenna pair transmission signals (St21) and (St22) whose phase difference (??2) changes over time. The target object simultaneously receives the transmission signals (St21) and (St22) from the target-side antenna and returns to the measurement apparatus the information (D?) corresponding to the positional relationship between the target object and the measurement apparatus determined from a reception signal (Sr2).
    Type: Application
    Filed: September 29, 2016
    Publication date: January 19, 2017
    Inventors: Koichi TAKIZAWA, Yoshiharu YOSHII, Yoshiyuki TOKIWA