Patents by Inventor Shouji Sakurai

Shouji Sakurai 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).

  • Management Service Device, Backup Service Device, Communication Terminal Device, and Storage Medium
    Publication number: 20080260156
    Abstract: It is an object to provide a method for invalidation and new registration of a storage medium, a method for backup of data stored in a storage medium and for restoration of backup data to a storage medium, and a method for encryption of and application of an electronic signature to data to be backed up, and for decryption of backup data to be restored and verification of a signature.
    Type: Application
    Filed: August 19, 2004
    Publication date: October 23, 2008
    Inventors: Akihiro Baba, Shouji Sakurai, Seiichi Kondo, Tatsuji Munaka, Mariko Sawamura