Patents by Inventor Hajime Sugawa

Hajime Sugawa 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).

  • Information retrieval apparatus and recording medium having an information retrieval program recorded
    Patent number: 7124126
    Abstract: The invention analyzes a character string and link information of a WWW page being currently browsed, infers that the said page is a page having a collection of information of a certain kind, namely, an objective field such as present information, event information or the like, and embeds into this page a function of performing a retrieval limited to the inferred objective field. A user performs a limited retrieval using the retrieval function and obtains other information of the said objective field.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: October 17, 2006
    Assignee: NEC Corporation
    Inventors: Katsushi Matsuda, Hajime Sugawa