Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9807038 | Method and system for providing instant messaging service | Ka Ram Han, Yong Hyun Kim, Sung Hwan Chang | 2017-10-31 |
| 9647967 | Method of providing instant messaging service and multiple services expanded from instant messaging service | Doo Shik Chung, Soo Wan Shin | 2017-05-09 |