Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6330117 | Optical isolator module and optical amplifier using the same | — | 2001-12-11 |
| 6122110 | Multi-stage combined optical device having multiple channels | Ki Soo Park, Ki-Suk Sung, Yum Jae Chum, Sang Yeong Tae | 2000-09-19 |