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.

Date of Patent:
Feb. 06, 2024

Filed:

Jul. 01, 2019
Applicant:

Nippon Telegraph and Telephone Corporation, Tokyo, JP;

Inventors:

Kenta Shinohara, Musashino, JP;

Noritaka Horikome, Musashino, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 3/00 (2006.01); H04M 3/44 (2006.01); H04L 65/1104 (2022.01); H04L 61/4557 (2022.01); H04L 9/00 (2022.01); H04L 67/1097 (2022.01); H04M 3/42 (2006.01);
U.S. Cl.
CPC ...
H04M 3/44 (2013.01); H04L 9/50 (2022.05); H04L 61/4557 (2022.05); H04L 65/1104 (2022.05); H04L 67/1097 (2013.01); H04M 3/4228 (2013.01);
Abstract

A number management unit () of a number management system () generates a transaction to be managed in a blockchain based on number portability information obtained by receiving a number update request, generates a block obtained by aggregating multiple transactions, approves a suggested block by confirming normality of the block, and stores the block by connecting the block to a blockchain in a number database (). If a reset of the block in the number database () is suggested, the number management unit () transmits, to multiple number management apparatuses (), a reset suggestion block including, as a transaction, a reset suggestion, which is information indicating a suggestion for a reset, and if the reset suggestion block is approved, the number management unit () discards the blockchain in the number database ().


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