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 | Hae-Yoon Ryu | 2017-06-06 |
| 8057593 | Pigment dispersions and black water-reducing agent for cement | Hae-Yoon Ryu, Kwang-Eui YOON, Moo Soo PARK, Yo Bok Park, Se In Yang | 2011-11-15 |