Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11152801 | Energy level conversion circuit for portable energy storage apparatus | Yong-Yoong Chai, Jungsub Choi | 2021-10-19 |
| 10191933 | System for managing IFC version synchronized with BIM and method for managing IFC version thereof | Young-Seok Sohn | 2019-01-29 |