Patents by Inventor Minoru Yagishita

Minoru Yagishita 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).

  • Building management system
    Patent number: 4918615
    Abstract: A building management system enables error-free operation of utility devices in the building by limiting an operator's access to controls for the utility devices to those devices that the operator is authorized to control. The system includes a terminal unit and a central station. The operator inputs various commands via the terminal unit, and the central station verifies that the operator entering the commands is authorized to control the devices designated by the commands before performing the input operation command. The system also verifies that the input operation command is a correct command.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: April 17, 1990
    Assignee: Yamatake-Honeywell Co., Ltd.
    Inventors: Masashi Suzuki, Minoru Yagishita