Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12322872 | Feeding network device for improved direction estimation | Soo Chang CHAE, Ki Jin Kim | 2025-06-03 |
| 12244051 | Ultra-small size broadband coupler | Ki Jin Kim, Soo Chang CHAE | 2025-03-04 |
| 12088018 | 5G dual port beamforming antenna | Ki Jin Kim, Soo Chang CHAE | 2024-09-10 |
| 12040788 | Ultrahigh frequency traveling-wave switch | Ki Jin Kim, Soo Chang CHAE | 2024-07-16 |
| 11736183 | Wireless repeater | Se Hwan CHOI | 2023-08-22 |
| 10411875 | Hybrid type transceiver for broadband large area beamforming | Ki Jin Kim | 2019-09-10 |
| 9989253 | Combustion instability control method | Dong Jin Cha, Won-Joon Song, Gwang Nyeon RYU | 2018-06-05 |
| 9787000 | Beamforming array antenna control system and method for beamforming using the same | Ki Jin Kim, Sanghoon Park, Jong Won Yu, Hyun Sung Tae | 2017-10-10 |
| 9293797 | RF switch with transformer and switching method thereof | Ki Jin Kim, Sang-Hoon Park | 2016-03-22 |
| 9118301 | Bonding wire impedance matching circuit | Ki Jin Kim, Sang-Hoon Park, Jong Won Yu, Hyung Sung Tae | 2015-08-25 |
| 9000981 | Beamforming array antenna control system and method for beamforming using the same | Ki Jin Kim, Sanghoon Park, Jong Won Yu, Hyun Sung Tae | 2015-04-07 |
| 8874064 | Ultrahigh frequency I/Q sender/receiver using multi-stage harmonic mixer | Ki Jin Kim, Sanghoon Park | 2014-10-28 |
| 8737946 | Down-converter, up-converter, receiver and transmitter applying the same | Ki Jin Kim, Sang-Hoon Park, Young Jin Kim, Eun-Su Kim, Dong Hyun Baek +2 more | 2014-05-27 |
| 8475653 | Water treatment apparatus having meshed tubes provided with cilia and water treatment method using the same | Kwang Soo Kim, I-Tae Kim, Jun Ho Park, Yu Jin Lee | 2013-07-02 |
| 8421664 | Analog-to-digital converter | Seung-Tak Ryu, Jong-In Kim, Ki Jin Kim | 2013-04-16 |
| 8373469 | Phase-locked loop based frequency synthesizer and method of operating the same | Ki Jin Kim | 2013-02-12 |
| 8203394 | RF vector modulator for beamforming | Ki Jin Kim | 2012-06-19 |
| 7604733 | Apparatus for biological removal of phosphorus and nitrogen using granulated methane-oxidizing bacteria | Kwang Soo Kim, Hee Ja Lee, I-Tae Kim, Chai-Sung Gee, Sung Youn Kim +5 more | 2009-10-20 |
| 7520991 | Biological method for removing phosphorus and nitrogen from water using granulated methane-oxidizing bacteria | Kwang Soo Kim, Hee Ja Lee, I-Tae Kim, Chai-Sung Gee, Sung Youn Kim +5 more | 2009-04-21 |
| 7060185 | Sewage treatment apparatus using self-granulated activated sludge and sewage treatment method thereof | Kwang Soo Kim, Chai-Sung Gee, Hee Ja Lee, Chang W. Kim, Byung-Won Seo +2 more | 2006-06-13 |
| 6859105 | Variable gain control circuit and integrated circuit device having the same | — | 2005-02-22 |