Inventor

SONG JOO HAN

KR45 patents

⚠️ This page may combine multiple inventors who share the name “SONG JOO HAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SONG JOO HAN

COINPLUG INC

System for issuing public certificate on basis of block chain, and method for issuing public certificate on basis of block chain by using same

Method for providing authentication service by using decentralized identity and server using the same

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

System for issuing certificate based on blockchain network, and method for issuing certificate based on blockchain network by using same

Certificate issuing system based on block chain

Method for providing recording and verification service for data received and transmitted by messenger service, and server using method

Tampering verification system and method for financial institution certificates based on blockchain

System for authenticating certificate based on blockchain network, and method for authenticating certificate based on blockchain network by using same

Method for creating, registering, revoking authentication information and server using the same

Method and service-providing server for secure transmission of user-authenticating information

Method and server for providing notary service for file and verifying file recorded by notary service

Secure information transmitting system and method for personal identity authentication

Method for using and revoking authentication information and blockchain-based server using the same

System and method for verifying forgery of financial institution proof documents on basis of block chain

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

Method for issuing, redeeming, refunding, settling and revoking electronic voucher by using utxo-based protocol, and server employing same

Method for providing united point service using updated status of balance database with blockchain and server using the same

Method and server for authenticating and verifying file

Method for providing certificate service based on smart contract and server using the same

Method for creating, registering, revoking authentication information and server using the same

Method and server for authenticating and verifying file

Method and server for authenticating and verifying file

Method and server for providing notary service for file and verifying file recorded by notary service

Certificate issuing system based on block chain

Method for providing online ticket service by using blockchain network and server using the same

Method and server for providing notary service for file and verifying file recorded by notary service

Method for issuing currency and making payment using utxo-based protocol and server using same

Method and server for authenticating and verifying file

Method for issuing currency and making payment by managing balance database for each block in blockchain network and server using same

Method and server for providing notary service for file and verifying file recorded by notary service

Method and server for providing notary service with respect to file and verifying file recorded by the notary service

Method and server for providing notary service for file and verifying file recorded by notary service

Method for issuing authentication information and blockchain-based server using the same

Method for providing united point service in use of unspent transaction output based protocol and server using the same

Method for providing relational decentralized identifier service and blockchain node using the same

Method for providing virtual asset service based on decentralized identifier and virtual asset service providing server using them

Method for authenticating user contactlessly based on decentralized identifier using verifiable credential and authentication supporting server using the same

Method for managing information using tree structure based on blockchain, server and terminal using the same

SAMSUNG SDI CO LTD

Imidazole ring-containing compound and organic electroluminescence display device

Positive active material for rechargeable lithium battery, method of preparing same and rechargeable lithium battery including same

Positive active material for rechargeable lithium battery, method of preparing same, and rechargeable lithium battery including same

CPLABS INC

Tampering verification system and method for financial institution certificates, based on blockchain

Method for issuing, redeeming, refunding, settling and revoking electronic voucher by using utxo-based protocol, and server employing same

SUH SEUNG BUM

Device for estimating a lifetime of a secondary battery and method thereof

LEE SEON-HONG

Device for analyzing film on surface of electrode for rechargeable lithium battery and method of analyzing film on surface of electrode for rechargeable lithium battery using same