Patents by Inventor Mutsuo Kantou

Mutsuo Kantou 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).

  • Retrieving apparatus, retrieving method, and retrieving program of hierarchical structure data
    Patent number: 7933910
    Abstract: A data retrieving apparatus having: an input apparatus for inputting the hierarchical structure data showing the hierarchical structure and operation instruction data; a data storing apparatus for storing the inputted hierarchical structure data; a retrieving apparatus for retrieving data which satisfies conditions from the hierarchical structure data stored in the data storing apparatus on the basis of the operation instruction data which is inputted by the input apparatus; and an output apparatus for outputting the retrieved data. Each data which is stored in the data storing apparatus has items regarding an efficient date and items regarding a data change date. The retrieving apparatus has an apparatus for retrieving the data on the basis of the efficient date and the data change date.
    Type: Grant
    Filed: October 5, 2006
    Date of Patent: April 26, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Tomotoshi Ishida, Mutsuo Kantou, Miyako Hotta
  • Retrieving apparatus, retrieving method, and retrieving program of hierarchical structure data
    Publication number: 20070083532
    Abstract: A data retrieving apparatus having: an input apparatus for inputting the hierarchical structure data showing the hierarchical structure and operation instruction data; a data storing apparatus for storing the inputted hierarchical structure data; a retrieving apparatus for retrieving data which satisfies conditions from the hierarchical structure data stored in the data storing apparatus on the basis of the operation instruction data which is inputted by the input apparatus; and an output apparatus for outputting the retrieved data. Each data which is stored in the data storing apparatus has items regarding an efficient date and items regarding a data change date. The retrieving apparatus has an apparatus for retrieving the data on the basis of the efficient date and the data change date.
    Type: Application
    Filed: October 5, 2006
    Publication date: April 12, 2007
    Inventors: Tomotoshi Ishida, Mutsuo Kantou, Miyako Hotta