Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9670091 | High refractive index glass bead with high retroreflectivity, and method of preparing the same | Sang-Je Cho | 2017-06-06 |
| 8057593 | Pigment dispersions and black water-reducing agent for cement | Kwang-Eui YOON, Sang-Je Cho, Moo Soo PARK, Yo Bok Park, Se In Yang | 2011-11-15 |