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:
Dec. 28, 2021
Filed:
Jul. 28, 2017
Applicant:
Nec Corporation, Tokyo, JP;
Inventors:
Kazue Sako, Tokyo, JP;
Isamu Teranishi, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/32 (2006.01); H04L 9/30 (2006.01); G09C 1/00 (2006.01); G06Q 50/30 (2012.01);
U.S. Cl.
CPC ...
H04L 9/3255 (2013.01); G06Q 50/30 (2013.01); G09C 1/00 (2013.01); H04L 9/30 (2013.01); H04L 9/3239 (2013.01); H04L 9/3263 (2013.01); H04L 9/3268 (2013.01); H04L 9/3271 (2013.01); H04L 2209/38 (2013.01); H04L 2209/84 (2013.01);
Abstract
A system includes a plurality of nodes, an individual one of which transmits data to which a group signature is attached, and a plurality of management servers that are directly connected to each other. An individual one of the plurality of management servers includes a ledger for managing data received from the nodes. Addition of data to the ledger of at least one of the plurality of management servers is reflected on the ledgers of the other management servers.