Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8604239 | Diethylene tricarbamide and diethylene tricarbamide-formaldehyde condensation resins | — | 2013-12-10 |
| 8482355 | Power amplifier | Byeong Hak Jo, Yoo Sam Na, Hyeon Seok Hwang, Moon Suk Jeong, Gyu Suck KIM | 2013-07-09 |
| 8139573 | Mobile communication terminal and multimedia message processing method using the same | — | 2012-03-20 |
| 8018285 | Step variable gain amplifier | Yoo Sam Na | 2011-09-13 |
| 7663443 | Active balun circuit | Yoo Sam Na, Hyeon Seok Hwang | 2010-02-16 |
| 7570935 | Derivative superposition circuit for linearization | Yoo Sam Na, Byung Sung Kim, Won Jin Baek | 2009-08-04 |
| 7525395 | Step attenuator | Hyeon Seok Hwang, Yoo Sam Na, Byeong Hak Jo, Kyoung Seok Park | 2009-04-28 |
| 7274257 | Variable gain wideband amplifier | Won Jin Baek | 2007-09-25 |
| 5660931 | Polymeric film with paper-like characteristics | Sang-Il Kim, Young Jin Lee, Bum-Sang Kim, Ju-Ik Son | 1997-08-26 |
| 5602195 | Polymeric film and process for the preparation thereof | Sang-Il Kim, Young Jin Lee, Bum-Sang Kim | 1997-02-11 |
| 5403879 | Polyester film and articles made therefrom | Sang-Il Kim | 1995-04-04 |