Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9647180 | Glass-phosphor composite containing rare-earth ion and light-emitting diode including same | Byoung Jin So, Seung Ryeol Lee | 2017-05-09 |
| 8923722 | Switching mode power supply of image forming apparatus and method of supplying power according to state of image forming apparatus by using the same | Sung-kyu Choi | 2014-12-30 |
| 7719513 | LCD driving inverter and portable computer with the same | — | 2010-05-18 |
| 6853480 | Optical amplifier | Yong Gyu Choi, Bong Je Park, Hong-Seok SEO, Doo-Hee Cho, Kyong Hon Kim +1 more | 2005-02-08 |
| 6660672 | Alkali halide-doped sulfide glasses for optical amplifier and fabricating method thereof | Dong-Chin Lee, Hye Sun Lee, Sun-Tae Jung | 2003-12-09 |
| 6480663 | Optical fiber for optical amplifier | Yong Beom Shin, Sun-Tae Jung, Hyoun-Soo Kim | 2002-11-12 |
| 6347177 | Optical fiber for light amplifier | Dong-Chin Lee, Se-Ho Park, Sun-Tae Jung, Hyoun-Soo Kim | 2002-02-12 |
| 6272277 | Optical fiber for light amplifier | Yong Beom Shin, Se-Ho Park, Sun-Tae Jung, Hyoun-Soo Kim | 2001-08-07 |
| 6148125 | Ge-Ga-S-based glass composition having light amplifying characteristic and apparatus for optical communications using the same | Yong Beom Shin, Se-Ho Park, Dong Wook Shin, Hyoun-Soo Kim | 2000-11-14 |
| 6141479 | Ge-Ga-S-based glass composition having light amplifying characteristic and apparatus for optical communications using the same | Se-Ho Park, Dong Wook Shin, Hyoun-Soo Kim | 2000-10-31 |