Patents by Inventor Haruo Shimasaki

Haruo Shimasaki 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).

  • Link control system communicating between terminals
    Patent number: 5058057
    Abstract: A communication system uses a two-wire circuit and includes a master terminal and a backup terminal, and a main file and a backup file along with associated link control devices coupled to a plurality of satellite terminals. Each link control device functions both as a monitor and as a communication controller with priority between the link control devices for each of the files and terminals to maintain operation of the system.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: October 15, 1991
    Assignee: NCR Corporation
    Inventors: Sadao Morita, Haruo Shimasaki, Kiyohiko Tsutsumi