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:
Dec. 06, 2022

Filed:

Jun. 21, 2019
Applicant:

Nippon Telegraph and Telephone Corporation, Tokyo, JP;

Inventors:

Kenta Shinohara, Tokyo, JP;

Masayuki Akutsu, Tokyo, JP;

Hideki Shina, Tokyo, JP;

Noritaka Horikome, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 3/00 (2006.01); H04M 5/00 (2006.01); H04L 12/66 (2006.01); H04M 3/42 (2006.01); H04L 9/32 (2006.01); H04M 7/00 (2006.01); H04L 9/00 (2022.01);
U.S. Cl.
CPC ...
H04M 3/42297 (2013.01); H04L 9/3236 (2013.01); H04M 7/0075 (2013.01); H04L 9/50 (2022.05);
Abstract

Each of number management devices of a number management system includes a request reception unit configured to receive a number update request including number portability information, a transaction generation unit configured to generate a transaction for the received number portability information, a block proposal unit configured to acquire each of transactions generated in response to a plurality of number update requests, generate a block to be newly proposed, and transmit the generated block to be proposed to each of the plurality of number management devices, and a block approval unit configured to approve the block to be proposed by confirming a predetermined normal state of the block to be proposed and store the block to be proposed in a storage unit, with the block to be proposed connected to the block stored as the blockchain.


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