Patents by Inventor Sigeru Siratori

Sigeru Siratori 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).

  • Exchange controlling system for managing terminal groups
    Patent number: 5598465
    Abstract: An exchanging and controlling system which manages terminal groups, has a plurality of terminals. Terminal numbers of the terminals used as a group are registered in the system. A group number corresponding to a switch service is assigned to each of a plurality of terminal groups used for an exchange service. A plurality of terminals of which each has an individual terminal number are registered to belong to each of the terminal groups. The number dialed by a subscriber includes at least one digit corresponding to its group number and at least one digit which corresponds to the terminal number of the destination terminal.
    Type: Grant
    Filed: April 24, 1996
    Date of Patent: January 28, 1997
    Assignee: Fujitsu Limited
    Inventor: Sigeru Siratori