Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12228777 | Optical alignment device | Joong-Seon Choe, Chun Ju Youn | 2025-02-18 |
| 12072600 | Mach-zehnder interferometric optical modulator with shallow ridge waveguide structure and method for manufacturing the same | Hyun-Soo Kim, Dong Young Kim, Ho Sung Kim, Yongsoon Baek, Jang Uk Shin +2 more | 2024-08-27 |
| 11500150 | Waveguide photodetector | Joong-Seon Choe, Jong-Hoi Kim, Jonghyurk Park, Won Seok Han | 2022-11-15 |
| 10649139 | Optical waveguide structure | Young Ho Ko, Dong Young Kim, Jong-Hoi Kim, Yongsoon Baek, Jung-Ho Song +3 more | 2020-05-12 |
| 9956525 | Apparatus for purifying waste gases for integrated semiconductor | Sang-Joon Park, Dong Keun Jeon, Ki-Yong Lee, Hyun Uk Sin, Gyu Dong Moon | 2018-05-01 |
| 9305408 | Multiple electronic control unit diagnosing system and method for vehicle | Hae Yun Kwon, Jun Seo Park, Dong Min Bae | 2016-04-05 |
| 9270381 | Method and apparatus for transmitting and receiving coherent optical OFDM | Chun Ju Youn, Yong-Hwan Kwon, Jong-Hoi Kim, Joong-Seon Choe, Kwang-Seong Choi +1 more | 2016-02-23 |
| 9166680 | Apparatus and method for measuring IQ imbalance for optical receiver | Chun Ju Youn, Jong-Hoi Kim, Joong-Seon Choe, Yong-Hwan Kwon, Eun Soo Nam | 2015-10-20 |
| 9031421 | Measuring device and method of measuring signal transmission time difference thereof | Joong-Seon Choe, Chun Ju Youn, Jong-Hoi Kim, Yong-Hwan Kwon, Kwang-Seong Choi +1 more | 2015-05-12 |
| 8929731 | Apparatus for measuring performance of coherent optical receiver | Chun Ju Youn, Joong-Seon Choe, Jong-Hoi Kim, Yong-Hwan Kwon, Eun Soo Nam | 2015-01-06 |
| 8548281 | Electro-optic modulating device | Gyungock Kim, Jeong Woo Park, Jongbum You, Sang Gi Kim, Sanghoon Kim +9 more | 2013-10-01 |
| 7881574 | Optical device | Junghyung Pyo, In Gyoo Kim, Gyungock Kim | 2011-02-01 |
| 7848602 | Waveguide structure and arrayed waveguide grating structure | Jung-Ho Song, Jong Moo Lee, Junghyung Pyo, Gyung-Ock Kim | 2010-12-07 |
| 7760974 | Silicon arrayed waveguide grating device for reducing effective refractive index variation of optical waveguide according to temperature | Jong Moo Lee, Junghyung Pyo, Gyungock Kim | 2010-07-20 |
| 7693384 | Waveguide structure | Jong Moo Lee, O-Kyun Kwon, Gyung-Ock Kim | 2010-04-06 |
| 7630602 | Optical filter module and method of manufacturing the same | Jong Moo Lee, Junghyung Pyo, Gyungock Kim | 2009-12-08 |
| 7218806 | Multi-wavelength optical transceiver module, and multiplexer/demultiplexer using thin film filter | Young-Tak Han, Yoon Jung Park, Sang Ho Park, Jang Uk Shin, Hee Kyung Sung | 2007-05-15 |
| 6839497 | Optical waveguide platform and method of manufacturing the same | Sang Ho Park, Jang Uk Shin, Yoon Jung Park, Young-Tak Han, Hee-keyng Sung | 2005-01-04 |
| 6807326 | Optical module for suppressing optical and electrical crosstalk simultaneously | Young-Tak Han, Jang Uk Shin, Sang Ho Park, Yoon Jung Park, Hee-keyng Sung | 2004-10-19 |
| 6804444 | Optical waveguide platform and manufacturing method thereof | Jang Uk Shin, Sang Ho Park, Young-Tak Han, Hee-keyng Sung | 2004-10-12 |
| 6147021 | Dielectric ceramic composition of microwave MGTIO.sub.3 CATIO.sub.3 group and dielectric ceramic fabrication method using the same | Jin Woo Hahn, Gee Pyeong Han, Yark Yeon Kim, Sang Seok Lee, Tae Goo Choy | 2000-11-14 |
| 6077802 | Microwave dielectric ceramic composition | Jin Woo Hahn, Gee Pyeong Han, Yark Yeon Kim, Sang Seok Lee, Tae Goo Choy | 2000-06-20 |