Patents by Inventor Toru Setoyama

Toru Setoyama 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).

  • Bidirectional communication system
    Patent number: 6188684
    Abstract: A bidirectional communication system in which dial-up connection for transmitting communication data may be disconnected when not used, and may be insured to be reconnected when needed. Also, the system includes an arrangement in which availability of connection with dial-up may be notified/determined in advance. The bidirectional communication system includes a first communication station and one or more second communication stations, the second communication stations receiving information delivery service from the first communication station, and the second communication stations performing data communication with the first communication station by means of dial-up link.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: February 13, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Toru Setoyama, Takanori Miyamoto