Patents by Inventor Dong Hwan Choi

Dong Hwan 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: 20240295551
    Abstract: The present invention relates to an information provision method for examining active immunity. The present invention comprises (a) preparing a plurality of biological samples; (b) preparing a first reagent containing a vaccine antigen against SARS-CoV-2 or a protein antigen expressed by the vaccine, and a second reagent containing a protein derived from SARS-CoV-2 other than the antigen contained in the first reagent; c) preparing a plurality of mixed samples by mixing the biological samples with the reagents; d) preparing a plurality of detection reagents including a conjugate containing a signal generating means and an anti-interferon gamma antibody; (e) preparing a plurality of analyte samples by adding the detection reagent to the mixed sample; and (f) loading the analyte samples into a plurality of lateral flow cartridges and measuring signals from the cartridges using a signal detector.
    Type: Application
    Filed: June 3, 2021
    Publication date: September 5, 2024
    Inventors: Dong Hwan Choi, Minsuk Kwon, Hee Jung Byun
  • Publication number: 20240203709
    Abstract: In accordance with an exemplary embodiment, a substrate processing method includes: a preparation process of seating a substrate on a support in a chamber; a first cleaning process of injecting a first cleaning gas into the chamber and removing a native oxide on the substrate; a growth process of injecting a process gas into the chamber and growing a thin film on a growth area on one surface of the substrate; and a process of generating inductively coupled plasma (ICP) in the chamber in the first cleaning process, and an inner temperature of the chamber is in a range from 300° C. to 750° C. Thus, in accordance with an exemplary embodiment, a cleaning process of removing the native oxide formed on the growth area of the substrate is performed before the growth process. Thus, a selective growth process may be easily performed on the substrate, and quality of the thin film may improve.
    Type: Application
    Filed: April 8, 2022
    Publication date: June 20, 2024
    Inventors: Kyung Ran PARK, Kwang Su PARK, Won Uk CHAE, Dong Hwan CHOI, Cheol Young CHOI
  • Publication number: 20230012361
    Abstract: A power semiconductor device includes a semiconductor layer based on silicon carbide (SiC), a vertical drift region positioned to extend in a vertical direction inside the semiconductor layer and having a first conductive type, a well region positioned in at least one side of the vertical drift region to make contact with the vertical drift region and having a second conductive type, recess gate electrodes extending from a surface of the semiconductor layer into the semiconductor layer and buried in the vertical drift region and the well region to cross the vertical drift region and the well region in a first direction, source regions positioned in the well region between the recess gate electrodes and having the first conductive type, and insulating-layer protective regions surrounding lower portions of the recess gate electrodes, respectively, in the vertical drift region, and having the second conductive type.
    Type: Application
    Filed: June 10, 2022
    Publication date: January 12, 2023
    Applicant: HYUNDAI MOBIS Co., Ltd.
    Inventors: Jeong Mok HA, Hyuk WOO, Tae Yeop KIM, Dong Hwan CHOI, Sin A KIM
  • Publication number: 20230009426
    Abstract: A power semiconductor device includes an SiC semiconductor layer, a plurality of well regions disposed in the semiconductor layer such that two adjacent well regions at least partially make contact with each other, a plurality of source regions on the plurality of well regions in the semiconductor layer, a drift region in a first conductive type, a plurality of trenches recessed into the semiconductor layer from the surface of the semiconductor layer, a gate insulating layer on an inner wall of each trench, a gate electrode layer disposed on the gate insulating layer and including a first part disposed in each trench and a second part on the semiconductor layer, and a pillar region positioned under the plurality of well regions to make contact with the drift region and the plurality of well regions in the semiconductor layer, and having a second conductive type.
    Type: Application
    Filed: May 29, 2022
    Publication date: January 12, 2023
    Applicant: HYUNDAI MOBIS Co., Ltd.
    Inventors: Sin A KIM, Tae Yeop KIM, Jeong Mok HA, Dong Hwan CHOI, Hyuk WOO
  • Patent number: 11420363
    Abstract: Provided are a vehicular interior material manufacturing method and a vehicular interior material, the method comprising the steps of: forming a molded article including a surface having an uneven shape; and forming a printing layer on the surface of the molded article by using a predetermined blanket.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: August 23, 2022
    Assignee: LG HAUSYS, LTD.
    Inventors: Jae-Youl Joung, Yeon-Wook Choi, Yong-Gu Kwon, Dong-Hwan Choi
  • Patent number: 11361984
    Abstract: A substrate processing apparatus may include a first disk provided in a chamber and configured to perform a turning motion and to include a plurality of seating holes periodically arranged within a specific radius from a center axis, a plurality of second disks provided in the seating holes, respectively, and configured to perform a revolving and rotating motion in accordance with the turning motion of the first disk, a first rotary connector structure provided between the second disk and the seating hole to allow for a rotating motion of and for an electric connection to the second disk, an electrostatic chuck provided on the second disk and configured to hold a substrate using an electric power supplied through the first rotary connector structure, and a first magnetic gear fixed to the second disk and configured to exert a torque on the second disk, and a second magnetic gear.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: June 14, 2022
    Inventors: Seung Chul Shin, Jin Hyuk Yoo, Min Su Lee, Dong Hwan Choi
  • Publication number: 20220011305
    Abstract: An apparatus for easily and conveniently diagnosing tuberculosis including a blood collecting device is provided. The blood collecting device comprises a support part including a first surface, a second surface formed opposite to the first surface, and a communication hole through which a solution is movable. The communication hole is formed between the first surface and the second surface. A blood collecting tip is attached to the first surface and has a capillary tube connected to the communication hole. According to the present disclosure, a small amount of peripheral blood is collected using a capillary phenomenon and the collected whole blood is used as it is without separating a blood corpuscle therefrom by centrifugation and the like to diagnose tuberculosis.
    Type: Application
    Filed: February 25, 2019
    Publication date: January 13, 2022
    Inventors: Dong Hwan Choi, Kyungjoon Kang, Won Hee Lee
  • Publication number: 20210291415
    Abstract: Provided are a vehicular interior material manufacturing method and a vehicular interior material, the method comprising the steps of: forming a molded article including a surface having an uneven shape; and forming a printing layer on the surface of the molded article by using a predetermined blanket.
    Type: Application
    Filed: September 27, 2017
    Publication date: September 23, 2021
    Inventors: Jae-Youl JOUNG, Yeon-Wook CHOI, Yong-Gu KWON, Dong-Hwan CHOI
  • Publication number: 20200335387
    Abstract: A substrate processing apparatus may include a first disk provided in a chamber and configured to perform a turning motion and to include a plurality of seating holes periodically arranged within a specific radius from a center axis, a plurality of second disks provided in the seating holes, respectively, and configured to perform a revolving and rotating motion in accordance with the turning motion of the first disk, a first rotary connector structure provided between the second disk and the seating hole to allow for a rotating motion of and for an electric connection to the second disk, an electrostatic chuck provided on the second disk and configured to hold a substrate using an electric power supplied through the first rotary connector structure, and a first magnetic gear fixed to the second disk and configured to exert a torque on the second disk, and a second magnetic gear provided in the chamber to be interact with the first magnetic gear but prevented from turning.
    Type: Application
    Filed: August 22, 2017
    Publication date: October 22, 2020
    Inventors: Seung Chul SHIN, Jin Hyuk YOO, Min Su LEE, Dong Hwan CHOI
  • Patent number: 10798272
    Abstract: Provided is a shell-type monitoring apparatus. The shell-type monitoring apparatus includes a body, a gas storage provided in the body and configured to store a gas, a variable volume portion provided on the gas storage in the body and having a volume that varies depending on an amount of gas supplied from the gas storage, a photographing unit provided on the body and configured to move in the body, and a moving flow path provided in the body and configured to supply the gas in the variable volume portion to the photographing unit and thereby move the photographing unit.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: October 6, 2020
    Assignee: HANWHA DEFENSE CO., LTD.
    Inventors: Dong Hwan Choi, Seong Jun Cheon, Yong Joon Chang
  • Patent number: 10663258
    Abstract: Provided are a gunnery control system and a gunnery control method using the gunnery control system. The gunnery control system includes: an imaging device configured to photograph a target and to measure a distance to the target and a degree of a turning angle to the target; a gunnery device configured to fire at the target; and a controller configured to receive, from the imaging device, location information of the imaging device, the gunnery device, and the target, and to control a firing operation of the gunnery device by using the location information, wherein the controller is further configured to control a location and a photographing direction of the imaging device and to control a location and a firing direction of the gunnery device.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: May 26, 2020
    Assignee: HANWHA DEFENSE CO., LTD.
    Inventor: Dong Hwan Choi
  • Publication number: 20180372451
    Abstract: Provided are a gunnery control system and a gunnery control method using the gunnery control system. The gunnery control system includes: an imaging device configured to photograph a target and to measure a distance to the target and a degree of a turning angle to the target; a gunnery device configured to fire at the target; and a controller configured to receive, from the imaging device, location information of the imaging device, the gunnery device, and the target, and to control a firing operation of the gunnery device by using the location information, wherein the controller is further configured to control a location and a photographing direction of the imaging device and to control a location and a firing direction of the gunnery device.
    Type: Application
    Filed: December 14, 2016
    Publication date: December 27, 2018
    Applicant: HANWHA LAND SYSTEMS CO., LTD.
    Inventor: Dong Hwan CHOI
  • Publication number: 20180324333
    Abstract: Provided is a shell-type monitoring apparatus. The shell-type monitoring apparatus includes a body, a gas storage provided in the body and configured to store a gas, a variable volume portion provided on the gas storage in the body and having a volume that varies depending on an amount of gas supplied from the gas storage, a photographing unit provided on the body and configured to move in the body, and a moving flow path provided in the body and configured to supply the gas in the variable volume portion to the photographing unit and thereby move the photographing unit.
    Type: Application
    Filed: June 27, 2016
    Publication date: November 8, 2018
    Applicant: HANWHA LAND SYSTEMS CO., LTD.
    Inventors: Dong Hwan CHOI, Seong Jun CHEON, Yong Joon CHANG
  • Publication number: 20120230965
    Abstract: The present invention relates to a novel microorganism producing L-type poly-gamma-glutamic acid and an L-type poly-gamma-glutamic acid produced thereby and, more particularly, to Bacillus megaterium Toha (KCTC11752BP) isolated from salt-fermented Toha shrimps (Korean traditional fermented food) and an L-type poly-gamma-glutamic acid produced thereby. The novel microorganism Bacillus megaterium Toha (KCTC11752BP) has the ability to produce L-type poly-gamma-glutamic acid which can be used in high-value-added microbial agents, probiotic agents, immune-activating agents, animal drugs, cosmetics, moisture absorbers, thickeners, biodegradable plastics, etc.
    Type: Application
    Filed: December 7, 2011
    Publication date: September 13, 2012
    Applicants: BIOLEADERS CORPORATION, THE INDUSTRY AND ACADEMIC COOPERATION IN CHUNGNAM NATIONAL UNIVERSITY, KOREA RESEARCH INSTITUTE OF BIOSCIENCE AND BIOTECHNOLOGY, KOOKMIN UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Moon-Hee SUNG, Chul Joong KIM, Haryoung POO, Mi-Sun KWAK, Sung-Bin PARK, Dong-Hwan CHOI, Ji Yeon KIM
  • Publication number: 20110208137
    Abstract: Embodiments of the invention provide a stretchable sleeve having a medicinal section that can be loaded with a medicinal composition and a perforated section comprising a plurality of openings, wherein the medicinal section and the perforated section overlap, and wherein the sleeve is sized so that the interior surface of the medicinal section comfortably fits a body portion and the medicinal section contacts the body portion at the site of pain. Embodiments of the invention also provide methods for preparing a sleeve by applying a medicinal composition to the inner surface of the medicinal section through the openings at the perforated section. Embodiments of the invention also provide methods for relieving pain in a body portion by pulling the sleeve in an outside-out configuration straight up a body portion without having to roll and flip its exterior surface outside.
    Type: Application
    Filed: May 5, 2011
    Publication date: August 25, 2011
    Applicant: UNITED EXCHANGE CORPORATION
    Inventors: Eugene Choi, Dong Hwan Choi, Mun Seok Han
  • Patent number: 7959616
    Abstract: Embodiments of the invention provide a stretchable sleeve having a medicinal section that can be loaded with a medicinal composition and a perforated section comprising a plurality of openings, wherein the medicinal section and the perforated section overlap, and wherein the sleeve is sized so that the interior surface of the medicinal section comfortably fits a body portion and the medicinal section contacts the body portion at the site of pain. Embodiments of the invention also provide methods for preparing a sleeve by applying a medicinal composition to the inner surface of the medicinal section through the openings at the perforated section. Embodiments of the invention also provide methods for relieving pain in a body portion by pulling the sleeve in an outside-out configuration straight up a body portion without having to roll and flip its exterior surface outside.
    Type: Grant
    Filed: December 27, 2008
    Date of Patent: June 14, 2011
    Inventors: Eugene Choi, Dong Hwan Choi, Mun Seok Han
  • Publication number: 20100099448
    Abstract: A method and apparatus for a portable terminal intuitively and easily inputs receiver information of a text message for use when the portable terminal transmits the text message to others or replies to the text message. The receiver information inputting method includes extracting and displaying a preset number of items, in response to a request to input receiver information; calling receiver information linked to an item that is selected from among the items; and inputting the called receiver information in a receiver information input field.
    Type: Application
    Filed: October 14, 2009
    Publication date: April 22, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung Won YIM, Dong Jin LEE, Dong Hwan CHOI, Hye Joon YI
  • Patent number: 7572179
    Abstract: A ventilation system includes a ventilation module having a heat exchanger module, an IAQ module for improving quality of air passing through the ventilation module, and a case for guiding the air that consecutively passes through the ventilation module and the IAQ module.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: August 11, 2009
    Assignee: LG Electronics Inc.
    Inventors: Dong Hwan Choi, Kyung Hwan Kim, Nam Sik Yim, Ho Seon Choi, Keun Hyoung Choi
  • Publication number: 20090118685
    Abstract: Embodiments of the invention provide a stretchable sleeve having a medicinal section that can be loaded with a medicinal composition and a perforated section comprising a plurality of openings, wherein the medicinal section and the perforated section overlap, and wherein the sleeve is sized so that the interior surface of the medicinal section comfortably fits a body portion and the medicinal section contacts the body portion at the site of pain. Embodiments of the invention also provide methods for preparing a sleeve by applying a medicinal composition to the inner surface of the medicinal section through the openings at the perforated section. Embodiments of the invention also provide methods for relieving pain in a body portion by pulling the sleeve in an outside-out configuration straight up a body portion without having to roll and flip its exterior surface outside.
    Type: Application
    Filed: December 27, 2008
    Publication date: May 7, 2009
    Applicant: United Exchange Corporation
    Inventors: Eugene Choi, Dong Hwan Choi, Mun Seok Han
  • Patent number: 7485111
    Abstract: Embodiments of the invention provide a stretchable sleeve having a medicinal section that can be loaded with a medicinal composition and a perforated section comprising a plurality of openings, wherein the medicinal section and the perforated section overlap, and wherein the sleeve is sized so that the interior surface of the medicinal section comfortably fits a body portion and the medicinal section contacts the body portion at the site of pain. Embodiments of the invention also provide methods for preparing a sleeve by applying a medicinal composition to the inner surface of the medicinal section through the openings at the perforated section. Embodiments of the invention also provide methods for relieving pain in a body portion by pulling the sleeve in an outside-out configuration straight up a body portion without having to roll and flip its exterior surface outside.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: February 3, 2009
    Inventors: Eugene Choi, Dong Hwan Choi, Mun Seok Han