Patents by Inventor Sirou Takei

Sirou Takei 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).

  • Database system and matching method between databases
    Patent number: 5210868
    Abstract: In a database system for map information, matching and retrieving operations are carried out between an attribute database associated with a business and a map database. A matching key word is separated into a common noun part and a proper noun part, a synonym and an abbreviated word are inferred by employing rules respectively. Furthermore, a candidate key word is inferred by employment of a rule for combining these results at an optimum state, whereby a matching process is performed. Another address database is employed so as to realize a mutual retrieving operation even when the attribute database is not matched with the map database.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: May 11, 1993
    Assignees: Hitachi Ltd., The Tokyo Electric Power Co., Inc.
    Inventors: Shigeru Shimada, Kazuyuki Suzuki, Naoki Yamamoto, Nobuyuki Chikada, Sirou Takei