Patents by Inventor Sen Yanagi

Sen Yanagi 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).

  • Communication system and communication channel coupling method
    Patent number: 6490344
    Abstract: In a communication system, a call setup request is sent from a control unit to a first connection unit and a second connection unit to record the communication channel information of the opposite parties. And, the recorded communication channel information of the second connection unit is sent from the control unit to the first connection unit, and the communication channel information of the first connection unit is sent to the second connection unit. As a result, the first connection unit and the second connection unit are allowed to hold information communication by using their mutual communication channel information.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: December 3, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshio Murai, Shuichi Sato, Sen Yanagi