Patents by Inventor Koshi IKEGAWA

Koshi IKEGAWA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Distributed ledger management system, distributed ledger management method, and node
    Patent number: 11568399
    Abstract: A distributed ledger management system 10 includes: an orderer node 100 that generates a block containing transactions issued by a client 300, verifies the validity of the transactions contained in the block, distributes the block and verification results to a peer node 200, adds the block to a blockchain 125 in its storage device, and stores the verification results in its storage device; and the peer node 200 that receives the block and verification results from the orderer node 100, adds information on predetermined events indicated by the transactions to state information 225 in a storage device of the peer node, and discards the block and verification results.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: January 31, 2023
    Assignee: HITACHI, LTD.
    Inventors: Koshi Ikegawa, Nao Nishijima, Yoji Ozawa
  • DISTRIBUTED LEDGER MANAGEMENT SYSTEM, DISTRIBUTED LEDGER MANAGEMENT METHOD, AND NODE
    Publication number: 20220005025
    Abstract: A distributed ledger management system 10 includes: an orderer node 100 that generates a block containing transactions issued by a client 300, verifies the validity of the transactions contained in the block, distributes the block and verification results to a peer node 200, adds the block to a blockchain 125 in its storage device, and stores the verification results in its storage device; and the peer node 200 that receives the block and verification results from the orderer node 100, adds information on predetermined events indicated by the transactions to state information 225 in a storage device of the peer node, and discards the block and verification results.
    Type: Application
    Filed: March 4, 2021
    Publication date: January 6, 2022
    Applicant: HITACHI, LTD.
    Inventors: Koshi IKEGAWA, Nao NISHIJIMA, Yoji OZAWA