Patents by Inventor Naoki Nimura

Naoki Nimura 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).

  • File security management method and file security management apparatus
    Publication number: 20040190715
    Abstract: A file cannot be opened in a position other than a specified position in a way such that position information is obtained from a GPS device and filtered according to an encryption level. Data is encrypted by using the filtered position information as a key. A header and a digest are created, and their data are saved. To open the file encrypted by using the position information, it must be decrypted by using position information which is specified when the file is saved, whereby the file cannot be specified in a location other than the specified location.
    Type: Application
    Filed: February 25, 2004
    Publication date: September 30, 2004
    Applicant: FUJITSU LIMITED
    Inventors: Naoki Nimura, Taki Kono