Patents by Inventor Toshiaki Mizoi

Toshiaki Mizoi 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).

  • Telephone system
    Patent number: 8233410
    Abstract: A telephone system that allows multiplexing and demultiplexing plural group calls through simple operations is provided. The telephone system includes a conference trunk creating unit that creates a conference trunk as required and has a multiplexing/demultiplexing special number table prestoring a multiplexing special number and demultiplexing special number corresponding to plural group calls. After plural group calls start, if the multiplexing special number is input, a control unit causes the conference trunk creating unit to create a large-conference trunk, switches and connects the voices of plural group calls corresponding to the multiplexing special number to the large-conference trunk and starts the multiplexed group call.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: July 31, 2012
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Toshiaki Mizoi, Mamoru Maruyama, Eiji Yokokawa
  • Telephone system
    Publication number: 20100214963
    Abstract: A telephone system that allows multiplexing and demultiplexing plural group calls through simple operations is provided. The telephone system includes a conference trunk creating unit that creates a conference trunk as required and has a multiplexing/demultiplexing special number table prestoring a multiplexing special number and demultiplexing special number corresponding to plural group calls. After plural group calls start, if the multiplexing special number is input, a control unit causes the conference trunk creating unit to create a large-conference trunk, switches and connects the voices of plural group calls corresponding to the multiplexing special number to the large-conference trunk and starts the multiplexed group call.
    Type: Application
    Filed: February 2, 2010
    Publication date: August 26, 2010
    Inventors: Toshiaki Mizoi, Mamoru Maruyama, Eiji Yokokawa