Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10491161 | Apparatus for and method of a supply modulator for a power amplifier | Seung Chul Lee, Ji-seon Paek, Thomas Byunghak Cho | 2019-11-26 |
| 9602057 | Apparatus for and method of a supply modulator for a power amplifier | Seung Chul Lee, Ji-seon Paek, Thomas Byunghak Cho | 2017-03-21 |
| 9525384 | Method and apparatus for supplying power to a radio frequency power amplifier | Sung Jun Lee, Ji-seon Paek, Seung Chul Lee, Jun Hee Jung, Thomas Byunghak Cho +1 more | 2016-12-20 |
| 8436188 | Method for the separation of S-(−)-amlodipine from racemic amlodipine | Seog Beom Song, Il Hwan Cho, Dong Kwon Lim | 2013-05-07 |
| 8362263 | Crystalline S-(−)-amlodipine adipic acid salt anhydrous and preparation method thereof | Il Hwan Cho, Seog Beom Song, Dong Kwon Lim | 2013-01-29 |
| 7432398 | Inorganic acid salts of sibutramine | Dong Kwon Lim, Eun Young Yang, Jae Kyoung Ko, Kwang Do Choi, Hea Ran Suh +1 more | 2008-10-07 |
| 7429679 | Sulphonic acid salt of sibutramine | Dong Kwon Lim, Eun Young Yang, Jae Kyoung Ko, Kwang Do Choi, Hea Ran Suh +1 more | 2008-09-30 |
| 7393977 | Dicarboxylic acid salt of sibutramine | Kwang Do Choi, Hea Ran Suh, Dong Kwon Lim, Eun Young Yang, Jae Kyoung Ko +1 more | 2008-07-01 |
| 7329780 | Method of preparing optically pure phenethylamine derivatives | Seong Hwan Cho, Dong Kwon Lim, Kwang Hyeg Lee, Choong Sil Park | 2008-02-12 |
| 7015238 | Crystalline organic acid salt of amlodipine | Dong Kwon Lim, Hyuk Koo Lee, Hea Ran Suh, Seong Hwan Cho, Kwang Hyeg Lee +12 more | 2006-03-21 |
| 6940350 | Amplifier and method for canceling nonlinearity in amplifier | Hyun-Kyu Yu, Mun Yang Park | 2005-09-06 |
| 6903124 | Organic acid salt of amlodipine | Seong Hwan Cho, Yun Taek Jung, Choong Sil Park, Hyuk Koo Lee, Kwang Hyeg Lee +11 more | 2005-06-07 |
| 6890944 | Organic acid salt of amlodipine | Seong Hwan Cho, Yun Taek Jung, Choong Sil Park, Hyuk Koo Lee, Kwang Hyeg Lee +11 more | 2005-05-10 |
| 6846931 | Organic acid salt of amlodipine | Seong Hwan Cho, Choong Sil Park, Yun Cheul Kim, Dong Kwon Lim, Sung Hak Jung +11 more | 2005-01-25 |
| 6756390 | Organic acid salt of amlodipine | Seong Hwan Cho, Yun Taek Jung, Choong Sil Park, Hyuk Koo Lee, Kwang Hyeg Lee +11 more | 2004-06-29 |
| 6615398 | Method for dividing ROM and DDFS using the same method | Hyun-Kyu Yu, Seon-Ho Han, Mun Yang Park, Seong Do Kim, Lee-Sup Kim +3 more | 2003-09-02 |
| 6610715 | Cathecol hydrazone derivatives, process for preparing the same and pharmaceutical composition containing the same | Myung Xik Xiang, Byoung Chol Suh, Jong Hoon Kim, Kwang Hyuk Lee, Eui Kyung Kim +2 more | 2003-08-26 |
| 6605996 | Automatically gain controllable linear differential amplifier using variable degeneration resistor | Hyun-Kyu Yu, Sang-Gug Lee, Mun Yang Park, Seong Do Kim, Seon-Ho Han +1 more | 2003-08-12 |
| 5688965 | Azabicyclic compounds useful as an intermediate for the preparation of pyidone carboxylic acid compounds and process for preparing the same | Choong S. Kim, Jin Woong Kim, Jae Mok Lee, Il Hwan Cho, Young Jun Shin +4 more | 1997-11-18 |
| 5527910 | Pyridone carboxylic acid compounds and their uses for treating infectious diseases caused by bacteria | Choong S. Kim, Jin Woong Kim, Jae Mok Lee, Il Hwan Cho, Young Jun Shin +4 more | 1996-06-18 |