Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10450262 | Method for purifying 1,4-diaminobutane | Won Sik Gwak, Hong Xian Li, Hyo Hyoung Lee, Kyung Su Na, Su Jin Park +4 more | 2019-10-22 |
| 9963421 | Refining method of organic amine | Won Sik Gwak, Hideki Murata, Chong Ho Lee | 2018-05-08 |