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:
Mar. 11, 2025
Filed:
Dec. 20, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Tatsuro Ishida, Tokyo, JP;
Shigenori Ohashi, Tokyo, JP;
Shigeru Fujimura, Tokyo, JP;
Atsushi Nakadaira, Tokyo, JP;
Masayoshi Chikada, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
Upon receiving a usage request that includes a file identifier and a version identifier from a user terminal, a control servertransmits a file request that is based on the usage request to a file management system, and transmits a permission information request that is based on the usage request to a distributed ledger system. Upon receiving the file request, the file management system acquires the file that corresponds to the combination of the file identifier and the version identifier and transmits the file to the control server. Upon receiving the permission information request, the distributed ledger system acquires permission information that corresponds to the combination of the file identifier and the version identifier from a distributed ledger, and transmits the permission information to the control server. The control servertransmits the file to the user terminalif the user of the user terminal has viewing permission based on the permission information.