Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8837885 | Optic coupler, optical fiber laser device, and active optical module using the same | Hong-Seok SEO, Joon Tae Ahn, Jung-Ho Song | 2014-09-16 |
| 8768117 | Optical fiber coupler, method of manufacturing the optical fiber coupler, and active optical module | Hong-Seok SEO, Joon Tae Ahn | 2014-07-01 |
| 8611003 | Double clad fiber laser device | Joon Tae Ahn, Hong-Seok SEO, Dae Kon Oh | 2013-12-17 |
| 8501042 | Phosphor, white light emitting device including the phosphor and method of preparing the phosphor | Shang Hyeun PARK, Duk-Young Jeon, Tae-Won Jeong, Ji-yon Han | 2013-08-06 |
| 8077382 | Gain-clamped optical amplifying apparatus using fiber Raman amplifier having Raman cavity | Hong-Seok SEO, Joon Tae Ahn, Woon Jin Chung | 2011-12-13 |
| 7957432 | Light coupler and fiber laser system including the same | Hong-Seok SEO, Joon Tae Ahn | 2011-06-07 |
| 7738165 | Amplified spontaneous emission reflector-based gain-clamped fiber amplifier | Joon Tae Ahn, Hong-Seok SEO, Woon Jin Chung | 2010-06-15 |
| 7646951 | Apparatus for manufacturing optical fiber Bragg grating, optical fiber, and mid-infrared optical fiber laser | Joon Tae Ahn, Hong-Seok SEO | 2010-01-12 |
| 7616668 | Fiber laser system using fiber having dysprosium | Joon Tae Ahn, Hong-Seok SEO | 2009-11-10 |
| 7551348 | Tellurite glass composite, optical waveguide and optical amplifier using the same | Woon Jin Chung, Hong-Seok SEO, Joon Tae Ahn | 2009-06-23 |
| 7511881 | Amplified spontaneous emission reflector-based gain-clamped fiber amplifier | Joon Tae Ahn, Hong-Seok SEO, Woon Jin Chung | 2009-03-31 |
| 7133195 | Gain-clamped fiber amplifier | Joon Tae Ahn, Hong-Seok SEO, Woon Jin Chung | 2006-11-07 |
| 6916753 | Tm3+-doped silicate glass and the use thereof | Doo-Hee Cho, Yong Gyu Choi, Hong-Seok SEO | 2005-07-12 |
| 6853480 | Optical amplifier | Yong Gyu Choi, Hong-Seok SEO, Doo-Hee Cho, Kyong Hon Kim, Tae Hoon Lee +1 more | 2005-02-08 |
| 6583927 | Optical amplifier incorporating therein holmium-doped optical fiber | Yong Gyu Choi, Kyong Hon Kim | 2003-06-24 |