Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12103821 | Elevator having function of removing dust adhered to object aboard | Ju Dae Kim, Hyung Seok Kim, Hakki Han | 2024-10-01 |
| 9446930 | Emergency stop device with attached hand brake system | — | 2016-09-20 |
| 8429959 | Apparatus and method for testing braking performance | Yong Soo Jang, Hyun Kyu Cho | 2013-04-30 |