The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 2020
Filed:
Jan. 14, 2016
Nippon Telegraph and Telephone Corporation, Chiyoda-ku, JP;
Reo Yoshida, Musashino, JP;
Hitoshi Fuji, Musashino, JP;
Tetsutaro Kobayashi, Musashino, JP;
Junya Akiba, Musashino, JP;
Tomoaki Washio, Musashino, JP;
Tsuyoshi Miyamoto, Musashino, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Chiyoda-ku, JP;
Abstract
A leakage prevention apparatus stores an assumed use permission range, stores an information asset caused to be in an unavailable state by encryption, stores an information asset caused to be in an available state by decryption, and stores an information asset caused to be in a leakage-concerned state. When use of an information asset in the unavailable state is requested by an application corresponding to the use permission range, the information asset is decrypted to cause the information asset to be in the available state. When the use of the information asset in the available state by the application ends, the information asset is encrypted to cause the information asset to be in the unavailable state. When use of an information asset in the unavailable state is requested by an application not corresponding to the use permission range, the information asset is caused to be in the leakage-concerned state.