Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667670 | Microwave double-pole double-throw switch and microwave divide/through switch and power amplifier using thereof | Soung-Chol Hong | 2003-12-23 |
| 5796886 | Optical coupler 2.times.2 optical switch and method for optical switching therewith | Song Cheol Hong | 1998-08-18 |
| 5787212 | Optical coupler sensor with movable optical waveguide | Song Cheol Hong | 1998-07-28 |