Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7906472 | Bleaching and detergent compositions comprising manganese complex prepared from tetra-aza macrocyclic ligands through a convenient synthesis | Sang-Yun Lee, In Sik Cho, Won-Jong Kim, In Sub Baik | 2011-03-15 |
| 7009823 | Energy recovery circuit and energy recovery method using the same | Won Sik YOON, Feel-Soon Kang, Cheul-U Kim | 2006-03-07 |