Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9831943 | Repeater OTDR using repeater based raman pumps | Stephen Michael Webb, Do-Il Chang, John G. Ellison | 2017-11-28 |
| 9735532 | Multi-span optical communications link having remote optically pumped amplifier | Do-Il Chang | 2017-08-15 |