Inventor · disambiguated record
Chang Hun Yoo
Also filed as: YOO CHANG HUN · YOO CHANG M
37 granted patents·12 pending applications·22 citations·filing 2004–2025
95Inventor score
Top patents by PatentIndex Score
49 records- 0194US11816657B2Method and system for providing financial transaction using empty cardSSENSTONE INC·Filed 2022·Granted Nov 14, 2023·2 cites·2 claims
- 0294US11609983B2System, method, and program for providing virtual code, virtual code generating device, and virtual code verifying deviceSSENSTONE INC·Filed 2022·Granted Mar 21, 2023·2 cites·12 claims
- 0390US12182796B2Method and system for providing financial transaction using empty cardSSENSTONE INC·Filed 2022·Granted Dec 31, 2024·1 cites·12 claims
- 0489US11188895B2Virtual token-based settlement providing system, virtual token generation apparatus, virtual token verification server, virtual token-based settlement providing method, and virtual token-based settlement providing programSSENSTONE INC·Filed 2019·Granted Nov 30, 2021·4 cites·15 claims
- 0588US11354401B2System, method, and program for providing virtual code, virtual code generating device, and virtual code verifying deviceSSENSTONE INC·Filed 2020·Granted Jun 7, 2022·2 cites·14 claims
- 0687US2025342242A1System, method, and program for providing virtual code, virtual code generating device, and virtual code verifying deviceSSENSTONE INC·Filed 2025·Application pending·0 cites
- 0785US11392931B2Method and system for providing financial transaction using empty cardSSENSTONE INC·Filed 2019·Granted Jul 19, 2022·2 cites·15 claims
- 0884US11250417B2Virtual code-based control system, method, and program, control device, and control signal generating meansSSENSTONE INC·Filed 2019·Granted Feb 15, 2022·2 cites·10 claims
- 0983US2025094962A1Method and system for providing financial transaction using empty cardSSENSTONE INC·Filed 2024·Application pending·0 cites
- 1081US12393674B2System, method, and program for providing virtual code, virtual code generating device, and virtual code verifying deviceSSENSTONE INC·Filed 2024·Granted Aug 19, 2025·0 cites·10 claims
- 1180US12093930B2Virtual code-based control system, method, and program, control device, and control signal generating meansSSENSTONE INC·Filed 2023·Granted Sep 17, 2024·0 cites·20 claims
- 1280US10754942B2System, method, and program for providing virtual code, virtual code generating device, and virtual code verifying deviceSSENSTONE INC·Filed 2017·Granted Aug 25, 2020·2 cites·14 claims
- 1380US2024289786A1Smart card for generating and providing virtual code, and method and program thereforSSENSTONE INC·Filed 2024·Application pending·0 cites
- 1478US11960595B2System, method, and program for providing virtual code, virtual code generating device, and virtual code verifying deviceSSENSTONE INC·Filed 2023·Granted Apr 16, 2024·0 cites·11 claims
- 1574US11775963B2Virtual code-based control system, method, and program, control device, and control signal generating meansSSENSTONE INC·Filed 2022·Granted Oct 3, 2023·0 cites·20 claims
- 1671US11783313B2Method, program, server, wearable device for providing wearable device-based financial transactionSSENSTONE INC·Filed 2022·Granted Oct 10, 2023·0 cites·16 claims
- 1771US2025209215A1Method, program, and device for authenticating user setting information by using virtual codeSSENSTONE INC·Filed 2025·Application pending·0 cites
- 1871US2025254160A1Smart card device, device for generating virtual code for authentication, method of generating virtual code for authentication using the same, and server for verifying virtual code for authenticationSSENSTONE INC·Filed 2025·Application pending·0 cites
- 1970US12002041B2Method and system for user authentication using virtual code for authenticationSSENSTONE INC·Filed 2021·Granted Jun 4, 2024·0 cites·14 claims
- 2070US11995650B2Method, device and system for verifying virtual code based on sphereSSENSTONE INC·Filed 2021·Granted May 28, 2024·0 cites·20 claims
- 2170US9239910B2System and method for preventing the leaking of digital contentKIM DONG HWA·Filed 2012·Granted Jan 19, 2016·5 cites·13 claims
- 2270US2025193016A1Device and method for virtual authentication code-based process authorizationSSENSTONE INC·Filed 2025·Application pending·0 cites
- 2368US11887118B2Method, program, and apparatus for identifying device by using chip unique value-based virtual codeSSENSTONE INC·Filed 2022·Granted Jan 30, 2024·0 cites·17 claims
- 2467US11922411B2Smart card for generating and providing virtual code, and method and program thereforSSENSTONE INC·Filed 2020·Granted Mar 5, 2024·0 cites·8 claims
- 2567US11842334B2Smart card for generating virtual card number, and method and program for providing smart card-based virtual card numberSSENSTONE INC·Filed 2020·Granted Dec 12, 2023·0 cites·3 claims
- 2667US11836708B2Apparatus, method and program for providing financial transaction by virtual card numberSSENSTONE INC·Filed 2022·Granted Dec 5, 2023·0 cites·12 claims
- 2766US12265653B2Method, program, and device for authenticating user setting information by using virtual codeSSENSTONE INC·Filed 2021·Granted Apr 1, 2025·0 cites·9 claims
- 2866US11468423B2Method, program, server, wearable device for providing wearable device-based financial transactionSSENSTONE INC·Filed 2021·Granted Oct 11, 2022·0 cites·10 claims
- 2965US11379837B2Method, program, and apparatus for identifying device by using chip unique value-based virtual codeSSENSTONE INC·Filed 2021·Granted Jul 5, 2022·0 cites·10 claims
- 3062US12316627B2Smart card device, device for generating virtual code for authentication, method of generating virtual code for authentication using the same, and server for verifying virtual code for authenticationSSENSTONE INC·Filed 2022·Granted May 27, 2025·0 cites·9 claims
- 3161US11334871B2Apparatus, method and program for providing financial transaction by virtual card numberSSENSTONE INC·Filed 2020·Granted May 17, 2022·0 cites·13 claims
- 3261US2024020704A1Method for registering user in holderless card by using authentication virtual codeSSENSTONE INC·Filed 2023·Application pending·0 cites
- 3360US12261958B2Device and method for virtual authentication code-based process authorizationSSENSTONE INC·Filed 2021·Granted Mar 25, 2025·0 cites·9 claims
- 3459US11935044B2System, method and program for providing financial transaction by virtual code, virtual code generator and virtual code verification deviceSSENSTONE INC·Filed 2019·Granted Mar 19, 2024·0 cites·9 claims
- 3558US11989730B2Virtual code-based transaction system, method and programSSENSTONE INC·Filed 2022·Granted May 21, 2024·0 cites·18 claims
- 3658US2024422154A1Industrial control apparatus for performing dynamic authentication code-based authentication, and method using sameSSENSTONE INC·Filed 2024·Application pending·0 cites
- 3757US11301921B2System for payment based on store's intranet, mobile terminal including payment function based on store's intranet, method for providing payment service based on store's intranet, and program for performing the sameSSENSTONE INC·Filed 2018·Granted Apr 12, 2022·0 cites·8 claims
- 3856US12355759B2User authentication method using authentication virtual code and system thereforSSENSTONE INC·Filed 2022·Granted Jul 8, 2025·0 cites·13 claims
- 3954US12354080B2Method, program, and system for providing financial transaction based on a virtual corporate cardSSENSTONE INC·Filed 2022·Granted Jul 8, 2025·0 cites·13 claims
- 4054US11983704B2Virtual token-based settlement providing system, virtual token generation apparatus, virtual token verification server, virtual token-based settlement providing method, and virtual token-based settlement providing programSSENSTONE INC·Filed 2021·Granted May 14, 2024·0 cites·7 claims
- 4152US2019050849A1System, method, and program for providing financial transaction by virtual card number, virtual card number generating device, and virtual card number verifying deviceSSENSTONE INC·Filed 2018·Application pending·0 cites
- 4251US11875337B2Smart card for providing financial transaction by using virtual card numberSSENSTONE INC·Filed 2020·Granted Jan 16, 2024·0 cites·5 claims
- 4349US2020410476A1Method, program, and system for providing virtual corporate card-based financial transactionSSENSTONE INC·Filed 2020·Application pending·0 cites
- 4449US2021385213A1Device-to-device authentication method and program based on virtual authentication codeSSENSTONE INC·Filed 2021·Application pending·0 cites
- 4547US12096208B2Virtual code-based control system, method and program, control device and control signal generating means for unmanned moving objectSSENSTONE INC·Filed 2020·Granted Sep 17, 2024·0 cites·9 claims
- 4643US2005089303A1Apparatus and method for searching for playback start positions in VCRDAEWOO ELECTRONICS CORP·Filed 2004·Application pending·0 cites
- 4740US8690049B2Method for generating an image file for forgery verification and a method for forgeryverification of an image fileYOO CHANG HUN·Filed 2010·Granted Apr 8, 2014·0 cites·18 claims
- 4832US9756040B2User authentication method with enhanced securitySSENSTONE INC·Filed 2017·Granted Sep 5, 2017·0 cites·14 claims
- 4931US10270762B2User authentication method for enhancing integrity and securitySSENSTONE INC·Filed 2017·Granted Apr 23, 2019·0 cites·26 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →