Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12234142 | Device, method and computer-readable recording medium for detecting earthquake in mems-based auxiliary seismic observation network | Jae-Kwang Ahn, Jangsoo LEE, Euna Park, Eui-hong Hwang | 2025-02-25 |
| 10684383 | Seismic motion sensor and earthquake response system using the same | Seon Hwa Choi, Kihwan Lim, Myoung Jin Lee, Jae Seon Kim, Hyeong Gu Kang +1 more | 2020-06-16 |
| 9843296 | Linearizer and radio frequency power amplifier using same | Un Ha Kim, Jung Hyun Kim | 2017-12-12 |
| 9748901 | Power amplifying apparatus | Jung-Rin Woo, Sung Hwan Park, Jung Hyun Kim | 2017-08-29 |
| 9714600 | System and method for reducing harmful substances of ship and ship using the same | Ju Seog Han, Nam Gi Park, Jung Dae Yu | 2017-07-25 |
| 9553549 | Hybrid power amplifier having electrical and thermal conduction path | David E. Bockelman, Marshall Maple, Joo Min Jung | 2017-01-24 |
| 9350300 | Power amplifier | Un Ha Kim, Jung Hyun Kim | 2016-05-24 |
| 9306514 | Hybrid power amplifier comprising heterojunction bipolar transistors (HBTs) and complementary metal oxide semiconductor (CMOS) devices | David E. Bockelman, Marshall Maple, Joo Min Jung | 2016-04-05 |
| 9112463 | Pulsed dynamic load modulation power amplifier circuit | Moon Suk Jeon, Jung-Rin Woo, Sung Hwan Park, Jung Hyun Kim | 2015-08-18 |
| 8779860 | Power amplifier | Moon Suk Jeon, Jung-Rin Woo, Sang Hwa Jung, Jung Hyun Kim | 2014-07-15 |
| 8692620 | Power amplifier | Moon Suk Jeon, Jung-Rin Woo, Sang Hwa Jung, Jung Hyun Kim, Il Do Jung | 2014-04-08 |
| 8680928 | Power amplifier including variable capacitor circuit | Moon Suk Jeon, Jung-Rin Woo, Sang Hwa Jung | 2014-03-25 |
| 8643449 | Impedance matching circuit capable of efficiently isolating paths for multi-band power amplifier | Jung Hyun Kim, Un Ha Kim, Sang Hwa Jung | 2014-02-04 |
| 8497742 | Multi-layer waveguide structure having spaced apart first and second signal units of different widths and heights | Dong Hyun Lee, Young Hwan Kim, Sung-Tae Choi, Jung-han Choi, Cheol-gyu Hwang +1 more | 2013-07-30 |
| 8233851 | Method and apparatus for providing impedance matching for high-frequency signal transmitter | Joo Young Jeon, Sang Hwa Jung, Jung Hyun Kim | 2012-07-31 |
| 7847288 | Method and resulting structure for fabricating test key structures in DRAM structures | — | 2010-12-07 |
| 7714647 | Multiple output power mode amplifier | Moon Suk Jeon, Jung Hyun Kim | 2010-05-11 |
| 7468283 | Method and resulting structure for fabricating test key structures in DRAM structures | — | 2008-12-23 |
| 7257123 | Gateway having bypassing apparatus | In Ho Choi, Jun Goo Lee, Yong-Seog Pahn | 2007-08-14 |
| 6873289 | 3-dimensional beam steering system | Chang-Yul Cheon | 2005-03-29 |
| 6765534 | Mechanical beam steering antenna and fabricating method thereof | Chang-Yul Cheon, Yong-Kweon Kim, Seung Hyun Song, Chang-Wook Baek, Yang-Soo Lee | 2004-07-20 |
| 6404304 | Microwave tunable filter using microelectromechanical (MEMS) system | Yong-Kweon Kim, Hong Teuk Kim, Jae-Hyoung Park | 2002-06-11 |