Patents by Inventor Mitsutoshi Himaga

Mitsutoshi Himaga 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).

  • Authentication device, authentication system, and verification method for authentication device
    Patent number: 7941832
    Abstract: At startup, divided data blocks are received from other authentication devices and are assembled together with the local divided data block to reconstitute first authentication data. After a prescribed time interval, divided data blocks are again received from other authentication devices and are assembled together with the local divided data block to reconstitute second authentication data.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: May 10, 2011
    Assignee: Hitachi-Omron Terminal Solutions, Corp.
    Inventors: Tatsumi Tsutsui, Mitsutoshi Himaga, Tsukasa Yasue
  • Authentication device, authentication system, and verification method for authentication device
    Publication number: 20070300293
    Abstract: At startup, divided data blocks are received from other authentication devices and are assembled together with the local divided data block to reconstitute first authentication data. After a prescribed time interval, divided data blocks are again received from other authentication devices and are assembled together with the local divided data block to reconstitute second authentication data.
    Type: Application
    Filed: May 18, 2007
    Publication date: December 27, 2007
    Inventors: Tatsumi Tsutsui, Mitsutoshi Himaga, Tsukasa Yasue