Patents by Inventor Nobuyuki Ishimoto

Nobuyuki Ishimoto 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).

  • Enterprise information system having three level hierarchy of data bases and communication paths
    Patent number: 5282273
    Abstract: An enterprise information system in which personal work stations, personal data bases which are held in the work stations, a processor only for use in a division, and intradivision data and interdivision data which are held in the processor are provided. An informal communication path directly connects the work stations in an enterprise among the divisions and an intradivision formal communication path mutually connects the work station in the division to the processor to hold the intradivision data base or the interdivision data base corresponding to the division or both of them. An interdivision formal communication path mutually connects the processors to hold the interdivision data bases. The intradivision data base can only be accessed by the intradivision formal communication path of the division.
    Type: Grant
    Filed: May 13, 1993
    Date of Patent: January 25, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Tetsuya Ushio, Sadamichi Mitsumori, Hiroshi Yajima, Osamu Chinone, Isoji Tabushi, Osamu Akita, Tetsushi Tomizawa, Yoshiya Nakatani, Yuji Ogiwara, Nobuyuki Ishimoto