Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6673231 | Method for removing sludge in crude oil tank and recovering oil therefrom | Dae-Seog Yoon, Chang-Hyo Choi, June-Tae Choi, Jong-won KWAK, Sung-Kil Park | 2004-01-06 |
| 6441200 | Method for preparing DL-&agr;-tocopherol with a high yield and high purity | Sijoon Lee, Jeong Soo Kim, Young Seek Yoon, Jun Tae Choi, Byong-Sung Kwak | 2002-08-27 |