Issued Patents All Time
Showing 25 most recent of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12244694 | Method for providing oracle service of blockchain network by using zero-knowledge proof and aggregator terminal using the same | Seung Hwa Lee, Jeong Hyuk Lee | 2025-03-04 |
| 12212692 | Tampering verification system and method for financial institution certificates, based on blockchain | Jay Wu Hong, Joo Han Song | 2025-01-28 |
| 12063209 | Certificate issuing system based on block chain | Jay Wu Hong, Joo Han Song | 2024-08-13 |
| 11961057 | 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 | 2024-04-16 |
| 11907917 | 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 | 2024-02-20 |
| 11861573 | 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 | 2024-01-02 |
| 11568396 | Method for using and revoking authentication information and blockchain-based server using the same | Joo Han Song, Jay Wu Hong | 2023-01-31 |
| 11556926 | Method for approving use of card by using blockchain-based token id and server using method | Moon Gju Suh, Jay Wu Hong | 2023-01-17 |
| 11544640 | Method for providing online ticket service by using blockchain network and server using the same | Jay Wu Hong, Joo Han Song | 2023-01-03 |
| 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 |
| 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 |
| 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 |
| 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 |
| 11205014 | Method and server for authenticating and verifying file | Jay Wu Hong, Joo Han Song | 2021-12-21 |
| 11082420 | Certificate issuing system based on block chain | Jay Wu Hong, Joo Han Song | 2021-08-03 |
| 11050690 | Method for providing recording and verification service for data received and transmitted by messenger service, and server using method | Jay Wu Hong, Joo Han Song | 2021-06-29 |
| 11037111 | Method for issuing currency and making payment by managing balance database for each block in blockchain network and server using same | Joo Han Song, Jay Wu Hong | 2021-06-15 |
| 11017122 | Method and server for authenticating and verifying file | Jay Wu Hong, Joo Han Song | 2021-05-25 |