Patents by Inventor Jeong Woo Choi

Jeong Woo Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190374126
    Abstract: Disclosed are a method and a device for measuring a biometric signal by using a radar. The disclosed method measures a plurality of biometric signals by using a radar by: (a) receiving the plurality of biometric signals from the radar; (b) calculating distance information of the received plurality of biometric signals and classifying the same on the basis of a distance; (c) selecting a signal having a largest variance according to a time; (d) further selecting a number of signals among signals having a distance with the signal selected in the step (c) smaller than an arbitrary distance from the distance-based classified signals; (e) converting all signals selected from a time domain to a frequency domain; (f) calculating a reliability of each biometric signal from the converted distance-based signals; and (g) detecting a corresponding biometric signal by selecting the distance-based signal where the calculated reliability is highest.
    Type: Application
    Filed: January 25, 2018
    Publication date: December 12, 2019
    Inventors: Sung Ho Cho, Jeong Woo Choi
  • Publication number: 20190377063
    Abstract: Disclosed are a method and a device for adaptively configuring a threshold for object detection by means of radar, the device including: a position-specific maximum signal value extraction unit extracting a maximum value of a signal for each position by obtaining the signal when there is no moving object; a position-specific signal magnitude sorting unit obtaining signals caused by a moving object, and sorting magnitudes of the obtained signals for each position in descending order for a time index; a candidate signal index selection unit selecting a candidate signal index; a signal index determination unit setting weighting factors for the respective signals up to the candidate signal index, and determining a sum of the weighting factors as a signal index; and a position-specific threshold configuring unit configuring the threshold for each position by using a signal of the determined signal index and a scaling factor.
    Type: Application
    Filed: January 26, 2018
    Publication date: December 12, 2019
    Inventors: Sung Ho Cho, Xuanjun Quan, Jeong Woo Choi
  • Publication number: 20190369089
    Abstract: The present disclosure provides a basal ganglia-on-a-chip for screening therapeutic agents for brain and nervous system diseases and a method for fabricating the same. The present invention provides a method for screening therapeutic agents for dopamine-dependent brain and nervous system diseases by using a basal ganglia-on-a-chip. When the basal ganglia-on-a-chip of the present invention is used in the effect evaluation of therapeutic agents for brain and nervous system diseases, the effect evaluation of therapeutic candidate substances can be economically and promptly carried out compared with an existing technique.
    Type: Application
    Filed: May 30, 2019
    Publication date: December 5, 2019
    Inventors: Jeong-Woo CHOI, Won Jun LEE, Jae Wook SHIN
  • Publication number: 20190202939
    Abstract: A bioelectronic device for regulating stem cell differentiation, a method for differentiating stem cells using the same, and a method for manufacturing the bioelectronic device. According to the present invention, it is possible to effectively control the differentiation of stem cells at a single-cell level, and to simultaneously perform a free radical inhibition function.
    Type: Application
    Filed: March 29, 2016
    Publication date: July 4, 2019
    Applicant: SOGANG UNIVERSITY RESEARCH FOUNDATION
    Inventors: Jeong Woo CHOI, Sang Uk KIM, Jin Ho YOON, Mohsen MOHAMMADNIAEI
  • Publication number: 20190118218
    Abstract: The present invention provides a method and a kit for half coating nanoparticles. According to the present invention, nanoparticles can be half coated in a relatively simple and economical process that can replace complicated processes, such as chemical synthesis, of a conventional Janus nanoparticle-preparing method.
    Type: Application
    Filed: February 15, 2017
    Publication date: April 25, 2019
    Applicant: Sogang University Research Foundation
    Inventors: Jeong Woo CHOI, Jin Ho YOON, Sang Uk KIM
  • Publication number: 20180235506
    Abstract: A method and device for measuring biometric data using a UWB radar are disclosed. The disclosed method includes: (a) determining a respiratory rate by using reflection signals reflected off a target patient; (b) extracting respiration signals from the reflection signals, removing the extracted respiration signals from the reflection signals and converting into signals of a frequency domain; and (c) determining a heartbeat rate by detecting peak values from the frequency-domain signals converted in said step (b).
    Type: Application
    Filed: April 20, 2018
    Publication date: August 23, 2018
    Inventors: Sung Ho CHO, Faheem KHAN, Jeong Woo CHOI
  • Patent number: 9945841
    Abstract: A method for measuring cell cycles includes immobilizing a capture specifically binding to a cell membrane protein to a substrate, wherein the cell membrane protein is a counterpartner binding to the capture, binding a cell having the cell membrane protein as the counterpartner to the capture, and measuring a redox potential of the cell. A method for screening a substance affecting cell cycles includes immobilizing a capture specifically binding to a cell membrane protein to a substrate; wherein the cell membrane protein is a counterpartner binding to the capture, binding a cell having the cell membrane protein as the counterpartner to the capture, treating a test substance of interest for analysis to a cell, and measuring a redox potential of the cell.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: April 17, 2018
    Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION SOGANG UNIVERSITY
    Inventors: Jeong-Woo Choi, Tae-Hyung Kim, Kafi Md Abdul
  • Publication number: 20180031513
    Abstract: The present invention relates to a method for detecting an undifferentiated pluripotent stem cell, and a cell-chip using the same. Since the cell chip-based quantitative analysis method of the present invention does not use antibodies, unlike flow cytometry or real-time PCR which has been conventionally used for the quantitative analysis of pluripotent stem cells, there is an advantage in that it is possible to conveniently and rapidly perform quantitative analysis, and since the function of cells is not affected even after analysis, it is possible to recover and use the cells used in the analysis.
    Type: Application
    Filed: July 21, 2015
    Publication date: February 1, 2018
    Applicant: SOGANG UNIVERSITY RESEARCH FOUNDATION
    Inventors: Hyuk Jin CHA, Jeong Woo CHOI, Cheol Heon YEA, Ho Chang JEONG
  • Patent number: 9796789
    Abstract: The present invention relates to a biomemory device, comprising (a) a substrate; and (b) a heterolayer comprising a protein having a redox potential and an inorganic particle; wherein the heterolayer is immobilized on the substrate. By applying inorganic particles, the present invention provides a biomemory device capable of enhancing low current signals detected electron transfer between biomolecules and substrates up to at least five (5) times greater signals. The present invention is capable of controlling the redox states with help of redox potentials of proteins depending on applied potential. The present invention provides a new-concept biomemory device as an information storage device based on the principle of electron transfer of a naturally occurring biomolecule.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: October 24, 2017
    Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION SOGANG UNIVERSITY
    Inventors: Jeong Woo Choi, Taek Lee, Jun Hong Min
  • Patent number: 9718894
    Abstract: Provided is a bioprocessing device including a hybrid of (1) a protein having a redox potential; and (b) a single strand DNA (ssDNA) conjugated to the protein. The bioprocessing device of the present invention has a function of information reinforcement, information regulation, or information amplification. This bioprocessing device of the present invention presents a new concept of biocomputing system enabling various functions.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: August 1, 2017
    Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION SOGANG UNIVERSITY
    Inventors: Jeong-Woo Choi, Taek Lee, Jun Hong Min
  • Patent number: 9650663
    Abstract: This invention relates to a sensor for detecting a stem cell differentiation, including (a) an electrode; and (b) a substrate of an alkaline phosphatase. The phosphorylation or dephosphorylation of the substrate for an alkaline phosphatase as a stem cell undifferentiation marker which dephosphorylates its substrate may be measured using an electrical signal in the present sensor. Therefore, the sensor of the present invention enables to electrically detect a stem cell status in a high-throughput manner and to determine the stem cell differentiation.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: May 16, 2017
    Assignee: Industry-University Cooperation Foundation Sogang University
    Inventors: Jeong-Woo Choi, Cheol-Heon Yea
  • Publication number: 20160089052
    Abstract: A method and device for measuring biometric data using a UWB radar are disclosed. The disclosed method includes: (a) determining a respiratory rate by using reflection signals reflected off a target patient; (b) extracting respiration signals from the reflection signals, removing the extracted respiration signals from the reflection signals and converting into signals of a frequency domain; and (c) determining a heartbeat rate by detecting peak values from the frequency-domain signals converted in said step (b).
    Type: Application
    Filed: June 23, 2015
    Publication date: March 31, 2016
    Inventors: Sung Ho CHO, Faheem KHAN, Jeong Woo CHOI
  • Publication number: 20150005479
    Abstract: Provided is a bioprocessing device including a hybrid of (1) a protein having a redox potential; and (b) a single strand DNA (ssDNA) conjugated to the protein. The bioprocessing device of the present invention has a function of information reinforcement, information regulation, or information amplification. This bioprocessing device of the present invention presents a new concept of biocomputing system enabling various functions.
    Type: Application
    Filed: October 4, 2013
    Publication date: January 1, 2015
    Applicant: Industry-University Cooperation Foundation Sogang University
    Inventors: Jeong-Woo CHOI, Taek LEE, Jun Hong MIN
  • Patent number: 8871067
    Abstract: The present invention relates to a sensor for detecting hydrogen peroxide, comprising: (a) a gold (Au) nanoparticle conjugated with a conducting oxide substrate comprising a conduction oxide; (b) a cytochrome c immobilized on the gold nanoparticle. In the performance of the present sensor, current values are increased in parallel with increased hydrogen peroxide concentration. Such performance enables to easily analyze the presence or concentration of hydrogen peroxide.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: October 28, 2014
    Assignee: Industry-University Cooperation Foundation Sogang University
    Inventors: Jeong Woo Choi, Ajay Kumar Yagati, Taek Lee, Jun Hong Min
  • Patent number: 8753870
    Abstract: A device, system, and method for detecting or separating target molecules allowing efficient detection even when only a small amount of target molecules or target cells are included in a sample involving the use of a target molecule linkage portion, a signal production portion, and first and second separation portions.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: June 17, 2014
    Assignees: Samsung Electronics Co., Ltd., Industry -University Coorperation Foundation Sogang University
    Inventors: Hun-joo Lee, Jeong-gun Lee, Jeong-woo Choi, Yeon-jeong Kim, Jong-myeon Park, Mi-jeong Song, Jin-mi Oh
  • Publication number: 20140158554
    Abstract: This invention relates to a sensor for detecting a stem cell differentiation, including (a) an electrode; and (b) a substrate of an alkaline phosphatase. The phosphorylation or dephosphorylation of the substrate for an alkaline phosphatase as a stem cell undifferentiation marker which dephosphorylates its substrate may be measured using an electrical signal in the present sensor. Therefore, the sensor of the present invention enables to electrically detect a stem cell status in a high-throughput manner and to determine the stem cell differentiation.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 12, 2014
    Applicant: Industry-University Cooperation Foundation Sogang University
    Inventors: Jeong-Woo Choi, Cheol-Heon Yea
  • Patent number: 8692233
    Abstract: The present invention relates to a biomolecule-based electronic device in which the biomolecule with redox potential is directly immobilized on the substrate. The present invention enables to excellently exhibit the capability of a protein-based bio-memory device in which it is preferable to use the substrate on which cysteine-introduced recombinant proteins are effectively immobilized and a self-assembled layer (SAM) is fabricated. It becomes realized that a redox potential is regulated using intrinsic redox potential of the protein dependent on applied voltage. The present invention provides a novel operating method in which three potentials are applied throughout four steps. The present invention has some advantages of fabricating a protein layer in a convenient manner and inducing electron transfer by fundamental electrochemical or electronic operation.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: April 8, 2014
    Assignee: Industry-University Cooperation Foundation Sogang University
    Inventors: Jeong-Woo Choi, Jun-Hong Min, Byung-Keun Oh, Hyun-Hee Kim, Young-Jun Kim
  • Publication number: 20140024044
    Abstract: A method for measuring cell cycles includes immobilizing a capture specifically binding to a cell membrane protein to a substrate, wherein the cell membrane protein is a counterpartner binding to the capture, binding a cell having the cell membrane protein as the counterpartner to the capture, and measuring a redox potential of the cell. A method for screening a substance affecting cell cycles includes immobilizing a capture specifically binding to a cell membrane protein to a substrate; wherein the cell membrane protein is a counterpartner binding to the capture, binding a cell having the cell membrane protein as the counterpartner to the capture, treating a test substance of interest for analysis to a cell, and measuring a redox potential of the cell.
    Type: Application
    Filed: January 25, 2012
    Publication date: January 23, 2014
    Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION SOGANG UNIVERSITY
    Inventors: Jeong-Woo Choi, Tae-Hyung Kim, Kafi Md Abdul
  • Patent number: 8569008
    Abstract: The present disclosure relates to a multifunctional biomemory device in which a protein having a redox potential substituted with a metal ion is directly immobilized on a substrate. The present disclosure provides an operating method in which the redox state of the protein is controlled by applying three different potentials. The present disclosure provides a biomemory device in which the metal ion of a metalloprotein is substituted to allow for artificial control of the redox potential. The present disclosure provides a new-concept biomemory device as an information storage device based on the principle of electron transfer of a naturally occurring biomolecule.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: October 29, 2013
    Assignee: Industry-University Cooperation Foundation Sogang University
    Inventors: Jeong Woo Choi, Taek Lee, Jun Hong Min
  • Publication number: 20130233729
    Abstract: The present invention relates to a sensor for detecting hydrogen peroxide, comprising: (a) a gold (Au) nanoparticle conjugated with a conducting oxide substrate comprising a conduction oxide; (b) a cytochrome c immobilized on the gold nanoparticle. In the performance of the present sensor, current values are increased in parallel with increased hydrogen peroxide concentration. Such performance enables to easily analyze the presence or concentration of hydrogen peroxide.
    Type: Application
    Filed: November 9, 2012
    Publication date: September 12, 2013
    Applicant: Industry-University Cooperation Foundation Sogang University
    Inventors: Jeong Woo CHOI, Ajay Kumar Yagati, Taek Lee, Jun Hong Min