Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12360154 | Wireless channel reproduction device | Sangil Kwak, Seung Keun PARK, Hyeyeon KWON | 2025-07-15 |
| 12320831 | Mode stirring device | Sangil Kwak, Seung Keun PARK, Hyeyeon KWON | 2025-06-03 |
| 10928432 | Reverberation chamber | Sang il Kwak, Jong Hwa Kwon | 2021-02-23 |
| 10598711 | Electromagnetic wave reverberation chamber | Sang il Kwak, Jong Hwa Kwon | 2020-03-24 |
| 9960860 | Cover accessory including electromagnetic wave suppression function for wireless communication device | Sang il Kwak, Jong Hwa Kwon | 2018-05-01 |
| 9276325 | Electromagnetic wave reverberation chamber | — | 2016-03-01 |
| 9035817 | Electromagnetic wave reverberation chamber | — | 2015-05-19 |
| 9030373 | Transparent film for reducing electromagnetic waves and method of manufacturing the same | — | 2015-05-12 |
| 8929842 | Apparatus and method for body protection from electromagnetic fields | Sang il Kwak, Jong Hwa Kwon | 2015-01-06 |
| 8890101 | Electromagnetic wave absorbing device | — | 2014-11-18 |
| 8797107 | Voltage controlled oscillator | Young Jun CHONG, Yong S. Moon, Hyeon Seok Jang | 2014-08-05 |
| 8558120 | Multilayer board for suppressing unwanted electromagnetic waves and noise | Jong Hwa Kwon, Sang il Kwak | 2013-10-15 |
| 8325104 | Dipole tag antenna structure mountable on metallic objects using artificial magnetic conductor for wireless identification and wireless identification system using the dipole tag antenna structure | Hyung Do CHOI, Jong Hwa Kwon, Dong Ho Kim, Jae-Ick Choi | 2012-12-04 |
| 8179298 | Multi-directional resonant-type electromagnetic wave absorber, method for adjusting electromagnetic wave absorption performance using the same and manufacturing method of the same | — | 2012-05-15 |
| 8164506 | Electromagnetic absorber using resistive material | Jong Hwa Kwon, Sang il Kwak, Je Hoon Yun, Chang-Joo Kim | 2012-04-24 |
| 8104691 | Tag antenna structure for wireless identification and wireless identification system using the tag antenna structure | Hyung Do CHOI, Dongho Kim, Jae-Ick Choi | 2012-01-31 |
| 8098213 | Frequency selective surface structure for filtering of single frequency band | Dong Ho Kim, Jae-Ick Choi, Jong Hwa Kwon, Hyung Do CHOI | 2012-01-17 |
| 8044862 | Antenna system having electromagnetic bandgap | Jong Hwa Kwon, Sang il Kwak, Hyung Do CHOI | 2011-10-25 |
| 8013777 | Electromagnetic wave absorber using resistive material | Jong Hwa Kwon, Sang il Kwak, Hyung Do CHOI | 2011-09-06 |
| 8004369 | Arrangement structure of electromagnetic band-gap for suppressing noise and improving signal integrity | Jong Hwa Kwon, Sang il Kwak, Je Hoon Yun, Chang-Joo Kim | 2011-08-23 |
| 6995714 | Internal triple-band antenna | Seong-Ook Park | 2006-02-07 |