Patents by Inventor Heon Choi

Heon 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: 20250151585
    Abstract: A display device includes a display panel, a window above the display panel, and a light control layer between the display panel and the window, and including light-blocking members spaced apart from each other, a first refractive layer on side surfaces of the light-blocking members to expose upper surfaces of the light-blocking members, and a second refractive layer on the first refractive layer, and having a refractive index that is greater than a refractive index of the first refractive layer.
    Type: Application
    Filed: May 20, 2024
    Publication date: May 8, 2025
    Inventors: Jin Su BYUN, Si Kwang KIM, In Young JUNG, Gi Heon CHOI
  • Publication number: 20250076524
    Abstract: The present disclosure relates to a system for monitoring radiation exposure using an eyeball-attachable apparatus for measuring radiation, the system including an apparatus for measuring radiation configured to be attachable to an eyeball of a person under measurement and to measure the amount of radiation exposure while being attached to the eyeball of the person under measurement; and a monitoring apparatus configured to receive measurement information about the amount of radiation exposure from the apparatus for measuring radiation, and to display information about the amount of radiation exposure of the person under measurement, thereby enabling real-time monitoring of the exposure dose according to the radiation exposure of a person under measurement, and further the remarkable reduction of the risk of explosion compared to existing lithium-based batteries, by applying a perovskite-based battery part, as well as smooth supply of power.
    Type: Application
    Filed: November 29, 2023
    Publication date: March 6, 2025
    Applicant: PAPRICA Lab. Co., Ltd.
    Inventors: Hong Gyun WU, Jung In KIM, Sang Hoon HEO, Song Yi HEO, Chang Heon CHOI, Jin Hyuck HEO, Min Jae CHOI
  • Publication number: 20250063923
    Abstract: Provided is a display device which comprises a substrate, an emission layer including a plurality of light-emitting elements to emit lights and disposed on the substrate, and a light control layer disposed on the emission layer, wherein the light control layer includes a light-transmitting film that transmits the lights, and a light-blocking film that blocks the lights, the light-transmitting film includes, a first low-refractive light-transmitting film disposed on the light-blocking film, and a first high-refractive light-transmitting film alternately disposed with the light-blocking film, and a refractive index of the first low-refractive light-transmitting film is smaller than a refractive index of the first high-refractive light-transmitting film.
    Type: Application
    Filed: March 26, 2024
    Publication date: February 20, 2025
    Inventors: Si Kwang KIM, Jin Su BYUN, Gi Heon CHOI
  • Publication number: 20240314266
    Abstract: A method for determining heat and reflected heat in a thermal image, according to the present invention, comprises the steps of: a) photographing a subject through a thermal imaging camera so as to collect a thermal image of the subject; b) analyzing features according to the thermal image temperature distribution of the thermal image; c) detecting the heat and the reflected heat in the thermal image according to the analysis in step b); and d) displaying, as heat and reflected heat regions in the thermal image, the heat and the reflected heat in the thermal image detected in step c).
    Type: Application
    Filed: November 30, 2021
    Publication date: September 19, 2024
    Inventors: I Seul JEON, Sung Mok MIN, Song Hae YE, Won Kyu LEE, Ju Sik KIM, Hee In LEE, Dong Heon CHOI, Jang Woo KWON, Seon Woo LEE
  • Publication number: 20230242138
    Abstract: A method for evaluating a driver in a vehicle having an advanced driver assistance system according to an embodiment includes collecting vehicle traveling information including the movement distance and movement time of a vehicle, extracting a physical property value on the basis of the vehicle traveling information, receiving a notification from the advanced driver assistance system, calculating a personal characteristic notification index value by non-dimensionalizing the notification according to the physical property value, and calculating a reckless driving index value on the basis of the personal characteristic notification index value, the weight for each notification, and a property correction coefficient.
    Type: Application
    Filed: June 15, 2021
    Publication date: August 3, 2023
    Inventors: Ju Heon CHOI, Min Seok SUNG, Seung Eun KANG
  • Publication number: 20220392715
    Abstract: An apparatus and a method for processing a capacitor according to the present disclosure may include a clamping module grabbing or releasing a capacitor to transport the capacitor, and a first processing module and a second processing module matched with each other to process and test leads of the capacitor, and simultaneously perform various processes through different processing units formed in the first processing module and symmetrical processing units formed in the second processing module and corresponding to be matched with the processing units. By providing the apparatus and method for processing the capacitor, it is possible to process a larger amount of capacitors assembled to a capacitor assembly and identify and remove the electrical defect before assembled to the assembly.
    Type: Application
    Filed: June 15, 2021
    Publication date: December 8, 2022
    Applicant: Samwha Electric Co., Ltd.
    Inventors: Jong On PARK, Tae Yun KIM, Eun Kyun JOO, Young Jin KWON, Jang Yong YOON, Ji Heon CHOI, Long Ji LI
  • Publication number: 20220265253
    Abstract: An oral fixation apparatus according to an embodiment of the present disclosure includes a mouthpiece provided to be mounted in a mouth, and a pressing unit configured to move relative to the mouthpiece, wherein the pressing unit is configured to press a tongue in the mouth to any one side in the mouth. Through this configuration, the oral fixation apparatus may maintain the same intraoral state. The oral fixation apparatus may be stably mounted inside the mouth, such that radiation therapy may be effectively and stably performed.
    Type: Application
    Filed: June 4, 2020
    Publication date: August 25, 2022
    Inventors: Hong Gyun WU, Jong Min PARK, Jung In KIM, Chang Heon CHOI, Jae Man SON, Ji Seong KIM
  • Patent number: 10864383
    Abstract: The present disclosure relates to a respiratory gating system for inducing respiration of a patient during radiation therapy. A respiratory gating system according to one embodiment of the present disclosure comprises: an image management unit for acquiring an MRI image of a patient and processing the acquired image; and a projection unit for displaying the MRI image acquired and processed by the image management unit to the patient in real time, wherein the projection unit may be configured to project an image of a treatment area of the patient in real time using, as a screen, a bore of a radiotherapy equipment which is formed to surround the patient in order to acquire the MRI image.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: December 15, 2020
    Assignees: SEOUL NATIONAL UNIVERSITY HOSPITAL, PAPRICA Lab. Co., Ltd.
    Inventors: Hong Gyun Wu, Jong Min Park, Chang Heon Choi, Jung In Kim
  • Publication number: 20200241137
    Abstract: The present disclosure provides a hypertube system for detecting a position of a hypertube vehicle, including a hypertube vehicle, a tube configured to surround a travel path of the hypertube vehicle, At least one LiDAR sensor each mounted on an inner wall of the tube and including a laser transmitter configured to irradiate a laser beam toward the hypertube vehicle and a laser receiver configured to detect a laser, and a reflector configured to reflect the laser irradiated from the LiDAR sensor, wherein the reflector may be disposed in the hypertube vehicle, and wherein the laser beam reflected from the reflector reaches the laser receiver of the LiDAR sensor to be used in detecting the position of the hypertube vehicle.
    Type: Application
    Filed: December 10, 2018
    Publication date: July 30, 2020
    Applicant: Korea Railroad Research Institute
    Inventors: SuYong CHOI, Jae Heon CHOI, Jung Youl LIM, Chang Young LEE, Kwan Sup LEE, Yong Jun JANG, Jeong Min JO, Jin Ho LEE, Min Hwan OK, Jae Hoon KIM, Lee Hyeon KIM
  • Patent number: 10717697
    Abstract: The present invention relates to a method for preparing 1,3-cyclohexanedicarboxylic acid capable of exhibiting excellent activity, of enhancing the reaction efficiency and economic efficiency by using a catalyst having improved durability under the reaction conditions of high temperature and strong acid, of achieving excellent conversion rates by allowing most of reactants to participate in the reaction, and of obtaining products having high purity while minimizing by-products within a shorter period of time. The method for preparing 1,3-cyclohexanedicarboxylic acid may include: reducing isophthalic acid in the presence of a metal catalyst fixed to a silica support and containing a palladium (Pd) compound and a copper (Cu) compound in a weight ratio of 1:0.1 to 0.5.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: July 21, 2020
    Assignee: LOTTE CHEMICAL CORPORATION
    Inventors: Sung Min Kim, Mi Sun Cha, Seong Hwan Choi, Young Heon Choi, Sung Joon Park, Chan Yeong Yun, Young Jong Seo
  • Patent number: 10597344
    Abstract: The present invention relates to a method for preparing high-purity 1,3-cyclohexanedimethanol capable of achieving a high conversion rate by allowing most of the reactant to participate in the reaction, and of increasing reaction efficiency and economic efficiency by further simplifying the reaction process, while minimizing by-products within a shorter period of time. Specifically, the method for preparing 1,3-cyclohexanedimethanol includes reducing 1,3-cyclohexanedicarboxylic acid in the presence of a metal catalyst, which is fixed to a silica support and includes a ruthenium (Ru) compound, a tin (Sn) compound and a platinum (Pt) compound in a weight ratio of 1:0.8 to 1.2:1.2 to 2.4.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: March 24, 2020
    Assignee: Lotte Chemical Corporation
    Inventors: Mi Sun Cha, Seong Hwan Choi, Sung Min Kim, Sung Joon Park, Chan Yeong Yun, Young Heon Choi
  • Publication number: 20190325649
    Abstract: An apparatus for providing virtual reality picture content includes a picture storage for storing virtual reality picture content in which a plane picture and an equirectangular projection picture are combined, and a communication unit connected to be able to communicate with at least one or more virtual reality devices, through which a user can concentrate on a narrative through a plane picture, and the degree of immersion can be significantly increased through an equirectangular projection picture for a part that needs to be immersed or a part that the user wants.
    Type: Application
    Filed: October 17, 2018
    Publication date: October 24, 2019
    Inventors: Young Il SONG, Jung Woo PARK, Joon Ho KIM, Chong Kwan KIM, Se Heon CHOI
  • Publication number: 20190225568
    Abstract: The present invention relates to a method for preparing 1,3-cyclohexanedicarboxylic acid capable of exhibiting excellent activity, of enhancing the reaction efficiency and economic efficiency by using a catalyst having improved durability under the reaction conditions of high temperature and strong acid, of achieving excellent conversion rates by allowing most of reactants to participate in the reaction, and of obtaining products having high purity while minimizing by-products within a shorter period of time. The method for preparing 1,3-cyclohexanedicarboxylic acid may include: reducing isophthalic acid in the presence of a metal catalyst fixed to a silica support and containing a palladium (Pd) compound and a copper (Cu) compound in a weight ratio of 1:0.1 to 0.5.
    Type: Application
    Filed: September 27, 2017
    Publication date: July 25, 2019
    Inventors: Sung Min KIM, Mi Sun CHA, Seong Hwan CHOI, Young Heon CHOI, Sung Joon PARK, Chan Yeong YUN, Young Jong SEO
  • Publication number: 20190202761
    Abstract: The present invention relates to a method for preparing high-purity 1,3-cyclohexanedimethanol capable of achieving a high conversion rate by allowing most of the reactant to participate in the reaction, and of increasing reaction efficiency and economic efficiency by further simplifying the reaction process, while minimizing by-products within a shorter period of time. Specifically, the method for preparing 1,3-cyclohexanedimethanol includes reducing 1,3-cyclohexanedicarboxylic acid in the presence of a metal catalyst, which is fixed to a silica support and includes a ruthenium (Ru) compound, a tin (Sn) compound and a platinum (Pt) compound in a weight ratio of 1:0.8 to 1.2:1.2 to 2.4.
    Type: Application
    Filed: September 5, 2017
    Publication date: July 4, 2019
    Inventors: Mi Sun CHA, Seong Hwan CHOI, Sung Min KIM, Sung Joon PARK, Chan Yeong YUN, Young Heon CHOI
  • Publication number: 20190060668
    Abstract: The present disclosure relates to a respiratory gating system for inducing respiration of a patient during radiation therapy. A respiratory gating system according to one embodiment of the present disclosure comprises: an image management unit for acquiring an MRI image of a patient and processing the acquired image; and a projection unit for displaying the MRI image acquired and processed by the image management unit to the patient in real time, wherein the projection unit may be configured to project an image of a treatment area of the patient in real time using, as a screen, a bore of a radiotherapy equipment which is formed to surround the patient in order to acquire the MRI image.
    Type: Application
    Filed: October 29, 2018
    Publication date: February 28, 2019
    Applicants: SEOUL NATIONAL UNIVERSITY HOSPITAL, HANBEAM TECHNOLOGY INC.
    Inventors: Hong Gyun WU, Jong Min PARK, Chang Heon CHOI, Jung In KIM
  • Publication number: 20180277836
    Abstract: Disclosed is an electrode for high-current-density operation. The electrode includes a substrate 202, a first layer 204 which is positioned to be in contact with the substrate and which includes TiOx and an electronically conductive oxide, a second layer 206 which is positioned to be in contact with the first layer and which includes TiOx and an oxide having oxidation durability to an electrolyte, and a third layer 208 which is positioned to be in contact with the second layer and the electrolyte and which includes TiOx and an oxide oxidizing the electrolyte.
    Type: Application
    Filed: March 29, 2017
    Publication date: September 27, 2018
    Applicant: Elchemtech Co., Ltd.
    Inventors: Sang Bong MOON, Yun Ki CHOI, Chang Hwan MOON, Hye Young JUNG, Nak Heon CHOI, Jun Young LEE, Kyoung Jun KIM, Min Ju PARK, Hyun Hee KIM
  • Patent number: 10047491
    Abstract: Provided is a ground reinforcement structure installed on a ground (10) in which a sandy soil layer (11) having a weak surface layer is provided and thus large-caliber excavation is difficult to be performed, the ground reinforcement structure including a ground reinforcement material (100) including: an expansion-type steel pipe (110) inserted to be installed in a small-caliber drilled portion (A) having a diameter of 51 mm to 61 mm and expanded by hydraulic pressure; and a settlement member (120) coupled to a rear end of the expansion-type steel pipe (110). Here, the expansion-type steel pipe (110) is inserted into the sandy soil layer (11), and the settlement member (120) is inserted into a rock layer (12). In this case, the settlement member (120) of the ground reinforcement structure according to the present invention is fixed to the rock layer (12), fixing force is excellent.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: August 14, 2018
    Assignee: KOLON GLOBAL CORPORATION
    Inventors: Kyoung Chul Kim, Se Jin Kim, Sung Gon Son, Jae Seo Choi, Sang Heon Choi
  • Publication number: 20180100280
    Abstract: Provided is a ground reinforcement structure installed on a ground (10) in which a sandy soil layer (11) having a weak surface layer is provided and thus large-caliber excavation is difficult to be performed, the ground reinforcement structure including a ground reinforcement material (100) including: an expansion-type steel pipe (110) inserted to be installed in a small-caliber drilled portion (A) having a diameter of 51 mm to 61 mm and expanded by hydraulic pressure; and a settlement member (120) coupled to a rear end of the expansion-type steel pipe (110). Here, the expansion-type steel pipe (110) is inserted into the sandy soil layer (11), and the settlement member (120) is inserted into a rock layer (12). In this case, the settlement member (120) of the ground reinforcement structure according to the present invention is fixed to the rock layer (12), fixing force is excellent.
    Type: Application
    Filed: December 20, 2016
    Publication date: April 12, 2018
    Applicant: KOLON GLOBAL CORPORATION
    Inventors: Kyoung Chul KIM, Se Jin KIM, Sung Gon SON, Jae Seo CHOI, Sang Heon CHOI
  • Patent number: 9663426
    Abstract: Disclosed are a composite metal catalyst composition capable of increasing efficiency and economic feasibility of a reaction through simplification of a reaction process, and providing 1,4-cyclohexanedimethanol with high purity for a shorter time while minimizing byproducts; and a method and apparatus for preparing 1,4-cyclohexanedimethanol with high purity using the same. The present invention provides a composite metal catalyst composition for converting an aromatic dicarboxylic acid into an alicyclic diol compound, the composition containing: a first metal catalyst including a palladium (Pd) compound; and a second metal catalyst including a ruthenium (Ru) compound, a tin (Sn) compound, and a platinum (Pt) compound, and a method and apparatus for preparing 1,4-cyclohexanedimethanol using the same.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: May 30, 2017
    Assignee: LOTTE CHEMICAL CORPORATION
    Inventors: Young Heon Choi, Hyun Woo Park, Sung Joon Park, Seong Hwan Choi, Mi Sun Cha, Seong Min Kim, Young Jong Seo
  • Publication number: 20170107164
    Abstract: Disclosed are a composite metal catalyst composition capable of increasing efficiency and economic feasibility of a reaction through simplification of a reaction process, and providing 1,4-cyclohexanedimethanol with high purity for a shorter time while minimizing byproducts; and a method and apparatus for preparing 1,4-cyclohexanedimethanol with high purity using the same. The present invention provides a composite metal catalyst composition for converting an aromatic dicarboxylic acid into an alicyclic diol compound, the composition containing: a first metal catalyst including a palladium (Pd) compound; and a second metal catalyst including a ruthenium (Ru) compound, a tin (Sn) compound, and a platinum (Pt) compound, and a method and apparatus for preparing 1,4-cyclohexanedimethanol using the same.
    Type: Application
    Filed: April 7, 2015
    Publication date: April 20, 2017
    Applicant: LOTTE CHEMICAL CORPORATION
    Inventors: Young Heon CHOI, Hyun Woo PARK, Sung Joon PARK, Seong Hwan CHOI, Mi Sun CHA, Seong Min KIM, Young Jong SEO