Issued Patents


[24] J.-W. Choi, J. E. Jang, H. -J. Kim, J. Park, and K. S. Oh, “Short-range magnetic field system,” U.S10164333, Dec. 25 2018.

[23] J.-W. Choi, H.-J. Kim, K. Kim, and H. Choi, “Wireless power transfer system,” issued, Korea, 10-1897402, Sept. 04. 2018.


[22] J. Kim, J. P. Choi, J.-W. Choi, and H.-J. Kim, “System and method for simultaneous wireless information and power transfer based cancellation,” issued, Korea, 10-1791512, Nov. 23. 2017.

[21] J. H. Kim, H.-J. Kim, S. I. Cho, J. E. Jang, J.-W. Choi, and J. P. Choi, “Method for RF energy harvesting using mutual coupling effect on dipole antennas,” issued, Korea, 10-1791512, Oct. 24. 2017.

[20]최지웅, 한성민, 임성호, 박찬근, 박경준, 은용순, “유도신호를 통한 항재밍 장치 및 항재밍 방법,” issued, Korea: 10-1779694, Sep. 12. 2017.

[19] 최지웅, 김경수, 문제일, 장재은, 제민규, “오브젝트에 대한 가소성 측정 장치 및 방법,” issued, Korea: 10-1777023, Sep. 04. 2017.

[18]  H. Choi, J.-W. Choi, H.-J. Kim, and J. Lee, “Magnetically actuated microrobot based catheter with wireless power transform and it’s control method,” issued, Korea, 10-1749586, Jun. 15. 2017.

[17] 최지웅, 김한준, 최홍수, “ESPAR를 이용한 자기장 장치 및 ESPAR를 이용한 자기장 장치의 운용 방법,” issued, Korea: 10-1704288, Feb. 01. 2017.


[16] 최지웅, 한성민, “심볼의 반복전송을 지원하는 DPSK 시스템 및 DPSK 시스템의 구현 방법 (SYSTEM AND METHOD FOR SYMBOL REPETITION OF NON- COHERENT DPSK),” issued, Korea: 10-1647922, Aug. 05 2016.

[15] 최지웅, 김성연, 허재형, 유진우, 김경수, 임성호, “근육 치료를 위한 재활프로그램 생성 방법.재활프로그램 제장치,” issued, Korea: 10-1648638, Aug. 09 2016.


[14] J.-W. Choi, K. Kim, “Wireless control system and apparatus,” issued, Korea, 10-1564141, Oct. 22 2015

[13] J.-W. Choi, J.-E. Jang, H. J. Kim, J. Park, and K. S. Oh, “Near field magnetic system,” issued, Korea, 10-1563428, Oct. 20 2015.

[12] J C. Moon, J.-W. Choi, J. E. Jang, H. Choi, and W. S. Kang, “Apparatus and method for feeling fragrance,” issued, Korea: 10-1534397, June 30. 2015.


[11] K. J. Park, J.-W. Choi, W. H. Jeon, S. M. Han, “Method for cenceling out coexistence interference in wireless communication device and apparatus thereof)”, issued, Korea: 1014435140000, Sep. 2014.


[10] H. Choi, J.-W. Choi, J. E. Jang, “Method for manufacturing a complex micropiezoelectric ultrasonic transducer capable of receiving and transmitting ultrasonic signals at the same time,” issued, Korea: 13-101326531, Nov. 2013. (Transferred to industry)

[9] J. Lee and J.-W. Choi, “Significance of retransmission used in subsequent decoding,” issued, U.S.: 8,595,578, Nov. 2013.

[8] J. Lee and J.-W. Choi, “Soft sphere decoder for MIMO maximum likelihood demodulation,” issued, U.S.: 8,559,543, Oct. 2013.

[7] J. Lee, J.-W. Choi, and H.-L. Lou, “Multi-stream maximum-likelihood demodulation based on bitwise constellation partitioning,” issued, U.S.: 8,437,434, May 2013.

[6] J. Lee, J.-W. Choi, and H.-L. Lou, “MIMO soft demodulation using hard-decision candidate selection,” issued, U.S.: 8,428,169, Apr. 2013.

[5] J. Lee, J.-W. Choi, and H.-L. Lou, “Multi-stream soft demodulation using hard-decision schemes,” issued, U.S.: 8,401,127, Mar. 2013.

[4] J.-W. Choi, J. Lee, and H.-L. Lou, “Multi-stream demodulation scheme using multiple detectors,” issued, U.S.: 8,351,549, Jan. 2013.

[3] J. Lee, J.-W. Choi, and J. P. Choi, “Systems and methods for computing a relative path delay between multiple transmission sources,” issued, U.S.:7,782,751, Aug. 2010.

[2] Y.-H. Lee and J.-W. Choi, “Method and apparatus for estimating moment information of channel spectrum,” issued, Korea: 10-0733596, June 2007.

[1] Y.-H. Lee and J.-W. Choi, “Method and apparatus for direct sequence spread spectrum receiver using an adaptive channel estimator,” issued, U.S.: 7,012,955 (Mar. 2006), Korea: 10-0377969 (Mar. 2003)