Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6400239 | Microwave filter with a movable shield having alignment windows | Chang Hwa Lee, Bon Hee Koo, Dong Suk Jun, Sang Seok Lee | 2002-06-04 |
| 6150906 | HF filter using resonators having convex-concave structure | Chang Hwa Lee, Bon Hee Koo, Sang Seok Lee | 2000-11-21 |