| 12364973 |
Catalyst for selective hydrogenation of acetylene and method for producing same |
Yong Tae Kim, Sung Woo Lee, Seung Ju Han, Seok Ki Kim, Hyun-Woo Kim |
2025-07-22 |
| 12184596 |
Messenger-linked service system and method using a social graph of a messenger platform |
Jungmin Lee |
2024-12-31 |
| 12103899 |
Method for non-oxidative direct conversion of methane |
Yong Tae Kim, Sung Woo Lee, Seok Ki Kim, Seung Ju Han, Hyun-Woo Kim +1 more |
2024-10-01 |
| 11863506 |
Messenger-linked service system and method using a social graph of a messenger platform |
Jungmin Lee |
2024-01-02 |
| 11388119 |
Messenger-linked service system and method using a social graph of a messenger platform |
Jungmin Lee |
2022-07-12 |
| 9936476 |
System and method for providing social network service and for setting relationship between users |
Seong Hoon Kim, Jungmin Lee, Bo Yoon CHOI |
2018-04-03 |
| 9876654 |
Messaging service system and method for expanding member addition operation |
Haejin LEE, Seong Hoon Kim, Jungmin Lee, Bo Yoon CHOI, Youngsu Ko |
2018-01-23 |
| 9560618 |
System and method for providing social network service and for setting relationship between users |
Seong Hoon Kim, Jungmin Lee, Bo Yoon CHOI |
2017-01-31 |
| 9489686 |
System and method based on use information obtained from a user terminal |
Haejin LEE, Jungmin Lee |
2016-11-08 |
| 9274666 |
Method and apparatus for providing chatting service |
— |
2016-03-01 |
