Mitsubishi Electric Assigned Patent

Mitsubishi Electric Corp., Tokyo, Japan, has been assigned a patent (10,140,460) developed by Mori, Takumi, and Ichikawa, Sachihiro, Tokyo, Japan, for “file storage system and user terminal.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A data storage system, (1) uses an encryption scheme in which an encrypted file can be decrypted using a decryption key when a decryption condition set in the encrypted file is satisfied by a user attribute set in the decryption key. The data storage system, (1) stores encrypted files encrypted by the encryption scheme in a file storage apparatus, (20). When user attribute is specified from a user terminal, (10), the data storage system, (1) extracts the encrypted file of which the decryption condition is satisfied by the specified user attribute from among the encrypted files stored in the file storage apparatus, (20), and displays the extracted encrypted files classified by decryption condition.”

The patent application was filed on December 11, 2013 (15/033,855).