Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6818092 | Multi-layer electret having ultra-high charge stability and method of manufacturing thereof | Keum-Haeng Cho | 2004-11-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6818092 | Multi-layer electret having ultra-high charge stability and method of manufacturing thereof | Keum-Haeng Cho | 2004-11-16 |