Patents by Inventor Hyundoo Hwang

Hyundoo Hwang 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).

  • Patent number: 11607685
    Abstract: The present specification discloses a microfluidic analysis chip capable of adjusting movement of a specimen or a reagent by a negative pressure generation unit. A microfluidic analysis chip according to the present specification may comprise: a microtube for a main channel, which provides a space in which a specimen input through a specimen inlet formed at one end thereof reacts with a regent while the specimen moves to the other end thereof; a chip housing surrounding the microtube for the main channel; and a negative pressure generation unit which is positioned in the chip housing and connected to the microtube, so as to affect an internal pressure of the microtube for the main channel.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: March 21, 2023
    Assignee: BBB Inc.
    Inventors: Jaekyu Choi, Hyundoo Hwang, Dongsik Han
  • Patent number: 11529629
    Abstract: The present invention relates to a biosensor, including: a blood cell separation membrane which separates blood cells from blood and allows plasma components to pass through; a microfluid channel through which the plasma components that have passed through the blood cell separation membrane flow; a lower substrate which allows the plasma components that have passed through the blood cell separation membrane to flow along the microfluid channel; and a pillar which connects the blood cell separation membrane and the lower substrate, in which an electrode is disposed in the pillar, and the pillar pushes and lifts the blood cell separation membrane by a predetermined distance. The biosensor of the present invention allows plasma, which is difficult to pass through the blood cell separation membrane due to surface tension, to easily pass through.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: December 20, 2022
    Assignee: BBB INC.
    Inventors: Hyundoo Hwang, Dongsik Han, Jaekyu Choi
  • Patent number: 11300563
    Abstract: According to one embodiment of the present application, a biosensor, the biosensor comprising: a reaction part including a magnetic nanoparticle complex, a first electrode, and a second electrode; and a sample introduction part forming a passage so that a sample can be introduced into the reaction part from an outside of the biosensor; wherein the magnetic nanoparticle complex includes a first capturing substance for capturing a first target substance, a magnetic nanoparticle, and a reaction substance that performs at least one of an oxidation reaction and a reduction reaction, wherein the magnetic nanoparticle complex has is magnetic in the reaction part, and has a property that mobility can be changed according to a change in a condition of the reaction part, wherein the first electrode, a second capturing substance for capturing a second target substance is fixed, wherein the second electrode is an electrode different from the first electrode, and characterized in that at least one of the first target subs
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: April 12, 2022
    Assignee: BBB Inc.
    Inventors: Hyundoo Hwang, Jaekyu Choi
  • Patent number: 11239455
    Abstract: The present invention relates to a method of manufacturing a porous carbon electrode, the method including: applying a metal film or metal particles to one surface of a carbon electrode; heat treating the carbon electrode to which the metal film or the metal particles are applied; and forming one surface of the carbon electrode in a porous structure by making the metal film or the metal particles penetrate into one surface of the carbon electrode, and the efficiency of the carbon electrode as an electrode may be improved while increasing a surface area of a carbon structure.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: February 1, 2022
    Assignee: BBB INC.
    Inventors: Hyundoo Hwang, Jaekyu Choi
  • Publication number: 20210341471
    Abstract: According to one embodiment of the present application, a biosensor, the biosensor comprising: a reaction part including a magnetic nanoparticle complex, a first electrode, and a second electrode; and a sample introduction part forming a passage so that a sample can be introduced into the reaction part from an outside of the biosensor; wherein the magnetic nanoparticle complex includes a first capturing substance for capturing a first target substance, a magnetic nanoparticle, and a reaction substance that performs at least one of an oxidation reaction and a reduction reaction, wherein the magnetic nanoparticle complex is magnetic in the reaction part, and has a property that mobility can be changed according to a change in a condition of the reaction part, wherein the first electrode, a second capturing substance for capturing a second target substance is fixed, wherein the second electrode is an electrode different from the first electrode, and characterized in that at least one of the first target substanc
    Type: Application
    Filed: July 16, 2021
    Publication date: November 4, 2021
    Inventors: Hyundoo Hwang, Jaekyu Choi
  • Patent number: 11041854
    Abstract: According to one embodiment of the present application, a biosensor, the biosensor comprising: a reaction part including a magnetic nanoparticle complex, a first electrode, and a second electrode; and a sample introduction part forming a passage so that a sample can be introduced into the reaction part from an outside of the biosensor; wherein the magnetic nanoparticle complex includes a first capturing substance for capturing a first target substance, a magnetic nanoparticle, and a reaction substance that performs at least one of an oxidation reaction and a reduction reaction, wherein the magnetic nanoparticle complex has is magnetic in the reaction part, and has a property that mobility can be changed according to a change in a condition of the reaction part, wherein the first electrode, a second capturing substance for capturing a second target substance is fixed, wherein the second electrode is an electrode different from the first electrode, and characterized in that at least one of the first target subs
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: June 22, 2021
    Assignee: BBB INC.
    Inventors: Hyundoo Hwang, Jaekyu Choi
  • Publication number: 20210041430
    Abstract: According to one embodiment of the present application, a biosensor, the biosensor comprising: a reaction part including a magnetic nanoparticle complex, a first electrode, and a second electrode; and a sample introduction part forming a passage so that a sample can be introduced into the reaction part from an outside of the biosensor; wherein the magnetic nanoparticle complex includes a first capturing substance for capturing a first target substance, a magnetic nanoparticle, and a reaction substance that performs at least one of an oxidation reaction and a reduction reaction, wherein the magnetic nanoparticle complex has is magnetic in the reaction part, and has a property that mobility can be changed according to a change in a condition of the reaction part, wherein the first electrode, a second capturing substance for capturing a second target substance is fixed, wherein the second electrode is an electrode different from the first electrode, and characterized in that at least one of the first target subs
    Type: Application
    Filed: September 2, 2020
    Publication date: February 11, 2021
    Inventors: Hyundoo Hwang, Jaekyu Choi
  • Publication number: 20210033603
    Abstract: According to one embodiment of the present application, a biosensor, the biosensor comprising: a reaction part including a magnetic nanoparticle complex, a first electrode, and a second electrode; and a sample introduction part forming a passage so that a sample can be introduced into the reaction part from an outside of the biosensor; wherein the magnetic nanoparticle complex includes a first capturing substance for capturing a first target substance, a magnetic nanoparticle, and a reaction substance that performs at least one of an oxidation reaction and a reduction reaction, wherein the magnetic nanoparticle complex has is magnetic in the reaction part, and has a property that mobility can be changed according to a change in a condition of the reaction part, wherein the first electrode, a second capturing substance for capturing a second target substance is fixed, wherein the second electrode is an electrode different from the first electrode, and characterized in that at least one of the first target subs
    Type: Application
    Filed: August 25, 2020
    Publication date: February 4, 2021
    Inventors: Hyundoo Hwang, Jaekyu Choi
  • Publication number: 20200391208
    Abstract: The present specification discloses a microfluidic analysis chip capable of adjusting movement of a specimen or a reagent by a negative pressure generation unit. A microfluidic analysis chip according to the present specification may comprise: a microtube for a main channel, which provides a space in which a specimen input through a specimen inlet formed at one end thereof reacts with a regent while the specimen moves to the other end thereof; a chip housing surrounding the microtube for the main channel; and a negative pressure generation unit which is positioned in the chip housing and connected to the microtube, so as to affect an internal pressure of the microtube for the main channel.
    Type: Application
    Filed: December 22, 2017
    Publication date: December 17, 2020
    Applicant: BBB Inc.
    Inventors: Jaekyu CHOI, Hyundoo HWANG, Dongsik HAN
  • Publication number: 20200269244
    Abstract: The present invention relates to a biosensor, including: a blood cell separation membrane which separates blood cells from blood and allows plasma components to pass through; a microfluid channel through which the plasma components that have passed through the blood cell separation membrane flow; a lower substrate which allows the plasma components that have passed through the blood cell separation membrane to flow along the microfluid channel; and a pillar which connects the blood cell separation membrane and the lower substrate, in which an electrode is disposed in the pillar, and the pillar pushes and lifts the blood cell separation membrane by a predetermined distance. The biosensor of the present invention allows plasma, which is difficult to pass through the blood cell separation membrane due to surface tension, to easily pass through.
    Type: Application
    Filed: May 12, 2020
    Publication date: August 27, 2020
    Applicant: BBB INC.
    Inventors: Hyundoo HWANG, Dongsik HAN, Jaekyu CHOI
  • Publication number: 20200274141
    Abstract: The present invention relates to a method of manufacturing a porous carbon electrode, the method including: applying a metal film or metal particles to one surface of a carbon electrode; heat treating the carbon electrode to which the metal film or the metal particles are applied; and forming one surface of the carbon electrode in a porous structure by making the metal film or the metal particles penetrate into one surface of the carbon electrode, and the efficiency of the carbon electrode as an electrode may be improved while increasing a surface area of a carbon structure.
    Type: Application
    Filed: May 11, 2020
    Publication date: August 27, 2020
    Applicant: BBB INC.
    Inventors: Hyundoo HWANG, Jaekyu CHOI
  • Publication number: 20140273223
    Abstract: Disclosed is micro-device for culturing cells comprising: a plurality of fluid paths through which fluid moves; and at least one inlet port for injecting fluid to the fluid paths, said fluid paths communicating with each other and being different in height from each other. In the cell culture device having a plurality of fluid paths, cells can be cultured by introducing a polymeric material to at least one fluid path having a relatively low height; solidifying the polymeric material to form a 3-dimensional scaffold; and injecting fluid for cell culture to a fluid path in contact with the 3-dimensional scaffold.
    Type: Application
    Filed: September 29, 2011
    Publication date: September 18, 2014
    Applicant: UNIST ACADEMY-INDUSTRY RESEARCH CORPORATION
    Inventors: Yoon-Kyoung Cho, Hyundoo Hwang