Issued Patents 2021
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 11012233 | Method for providing authentication service by using decentralized identity and server using the same | Joo Han Song | 2021-05-18 |
| 11005666 | Tampering verification system and method for financial institution certificates based on blockchain | Jay Wu Hong, Joo Han Song | 2021-05-11 |
| 11004044 | Method for paying cost of IoT device based on blockchain, and server, service providing device, and digital wallet using the same | Jay Wu Hong | 2021-05-11 |
| 10944574 | Method for providing virtual asset service based on decentralized identifier and virtual asset service providing server using them | Joo Han Song | 2021-03-09 |
| 10944570 | Method and server for providing notary service for file and verifying file recorded by notary service | Jay Wu Hong, Joo Han Song | 2021-03-09 |
| 10924285 | Method and server for providing notary service with respect to file and verifying file recorded by the notary service | Jay Wu Hong, Joo Han Song | 2021-02-16 |
| 10885501 | Accredited certificate issuance system based on block chain and accredited certificate issuance method based on block chain using same, and accredited certificate authentication system based on block chain and accredited certificate authentication method based on block chain using same | Jay Wu Hong, Joo Han Song | 2021-01-05 |