Patents by Inventor Kensuke Tsukishima

Kensuke Tsukishima 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).

  • International direct dialing booking system
    Patent number: 5579382
    Abstract: The international direct dialing booking system of the present invention enables the circuit between a calling party and the other party to be connected by calling the other party on behalf of the calling party and calling back the calling party if the circuit with the other party is not connected in an international direct dialing for the reason that the circuit is busy, or the other party is talking with another person on the telephone or makes no response. In addition, the international direct dialing booking system enables the booking of an international telephone call by the use of an international direct dialing.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: November 26, 1996
    Assignee: Kokusai Denshin Denwa Kabushiki Kaisha
    Inventor: Kensuke Tsukishima