Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11991116 | Method for operating relation server and system using the same | Sang-Keun Yoo, Yong-Woon Kim | 2024-05-21 |
| 11606445 | Method for operating relation server and system using the same | Sang-Keun Yoo, Yong-Woon Kim | 2023-03-14 |
| 11082518 | Method for operating relation server and system using the same | Sang-Keun Yoo, Yong-Woon Kim | 2021-08-03 |
| 10701169 | Method for operating relation server and system using the same | Sang-Keun Yoo, Yong-Woon Kim | 2020-06-30 |
| 9900399 | Method for operating machines and system using the same | Sang-Keun Yoo, Jin Young Lee | 2018-02-20 |
| 9667869 | Camera apparatus for automatically maintaining horizontality and method for the same | — | 2017-05-30 |
| 8732760 | IPTV access control, personalized advertisement, personalized electronic program guide providing method and system using fingerprint scanner equipped set-top box | Shin Gak Kang | 2014-05-20 |
| 8532709 | Method and apparatus for automatically converting phone number while roaming | — | 2013-09-10 |
| 8356006 | Method of effectively managing database system for mobile number portability | — | 2013-01-15 |
| 8259921 | Method of VoIP number portability using wireless device | Chang-Min Park | 2012-09-04 |