Issued Patents 2022
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11538036 | System and method for verifying forgery of financial institution proof documents on basis of block chain | Jay Wu Hong, Joo Han Song | 2022-12-27 |
| 11514440 | Method for issuing authentication information and blockchain-based server using the same | Joo Han Song, Jay Wu Hong | 2022-11-29 |
| 11438167 | Method and server for providing notary service for file and verifying file recorded by notary service | Joo Han Song, Jay Wu Hong | 2022-09-06 |
| 11436595 | Method for issuing, using, refunding, settling and revoking electronic voucher using updated status of balance database by respective blocks in blockchain, and server using the same | Joo Han Song, Jay Wu Hong | 2022-09-06 |
| 11416930 | Method for providing united point service in use of unspent transaction output based protocol and server using the same | Jay Wu Hong, Joo Han Song | 2022-08-16 |
| 11397928 | Method for issuing, redeeming, refunding, settling and revoking electronic voucher by using utxo-based protocol, and server employing same | Joo Han Song, Jay Wu Hong | 2022-07-26 |
| 11373177 | Method for issuing currency and making payment using utxo-based protocol and server using same | Joo Han Song, Jay Wu Hong | 2022-06-28 |
| 11366803 | Method for providing relational decentralized identifier service and blockchain node using the same | Joo Han Song | 2022-06-21 |
| 11316699 | Method for authenticating user contactlessly based on decentralized identifier using verifiable credential and authentication supporting server using the same | Moon Gju Suh, Joo Han Song | 2022-04-26 |
| 11301933 | Method for providing united point service using updated status of balance database with blockchain and server using the same | Jay Wu Hong, Joo Han Song | 2022-04-12 |
| 11244295 | Method for paying cost of IoT device based on blockchain and Merkle tree structure related thereto, and server, service providing terminal, and digital wallet using the same | Jay Wu Hong | 2022-02-08 |