Issued Patents All Time
Showing 25 most recent of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12212692 | Tampering verification system and method for financial institution certificates, based on blockchain | Joon Sun Uhr, Joo Han Song | 2025-01-28 |
| 12101419 | Blockchain network-based virtual common ID service method and service provision server using same | Kyoo Hyung Han | 2024-09-24 |
| 12063209 | Certificate issuing system based on block chain | Joon Sun Uhr, 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 | Joon Sun Uhr | 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, Joon Sun Uhr | 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 | Joon Sun Uhr | 2024-01-02 |
| 11700133 | Zero-knowledge proof-based certificate service method using blockchain network, certification support server using same, and user terminal using same | Kyoo Hyung Han | 2023-07-11 |
| 11568396 | Method for using and revoking authentication information and blockchain-based server using the same | Joo Han Song, Joon Sun Uhr | 2023-01-31 |
| 11556926 | Method for approving use of card by using blockchain-based token id and server using method | Moon Gju Suh, Joon Sun Uhr | 2023-01-17 |
| 11544640 | Method for providing online ticket service by using blockchain network and server using the same | Joon Sun Uhr, Joo Han Song | 2023-01-03 |
| 11538036 | System and method for verifying forgery of financial institution proof documents on basis of block chain | Joon Sun Uhr, Joo Han Song | 2022-12-27 |
| 11514440 | Method for issuing authentication information and blockchain-based server using the same | Joo Han Song, Joon Sun Uhr | 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, Joon Sun Uhr | 2022-09-06 |
| 11438167 | Method and server for providing notary service for file and verifying file recorded by notary service | Joon Sun Uhr, Joo Han Song | 2022-09-06 |
| 11416930 | Method for providing united point service in use of unspent transaction output based protocol and server using the same | Joon Sun Uhr, 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, Joon Sun Uhr | 2022-07-26 |
| 11373177 | Method for issuing currency and making payment using utxo-based protocol and server using same | Joo Han Song, Joon Sun Uhr | 2022-06-28 |
| 11301933 | Method for providing united point service using updated status of balance database with blockchain and server using the same | Joon Sun Uhr, 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 | Joon Sun Uhr | 2022-02-08 |
| 11210661 | Method for providing payment gateway service using UTXO-based protocol and server using same | Moon Gju Suh | 2021-12-28 |
| 11205014 | Method and server for authenticating and verifying file | Joon Sun Uhr, Joo Han Song | 2021-12-21 |
| 11082420 | Certificate issuing system based on block chain | Joon Sun Uhr, 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 | Joon Sun Uhr, 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, Joon Sun Uhr | 2021-06-15 |
| 11017122 | Method and server for authenticating and verifying file | Joon Sun Uhr, Joo Han Song | 2021-05-25 |