Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6597482 | Multiplexing/demultiplexing apparatus for wavelength division multiplexed system and wavelength division multiplexed passive optical subscriber networks using the same apparatus | Yun Chur Chung, Chang Hee Lee, Dae-Kwang Jung | 2003-07-22 |
| 6548806 | Apparatus for monitoring frequency of WDM signals using pilot tone | Yun Chur Chung, Keun Joo Park | 2003-04-15 |