Patents by Inventor Nam Gyu Park

Nam Gyu Park 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: 20240135858
    Abstract: A display device includes pixels connected to scan lines and data lines, each pixel including a driving transistor and at least one light emitting element, and a timing controller configured to generate output data using external input data. The timing controller includes a first compensator configured generate first data by correcting the external input data using at least one of optical measurement information, a threshold voltage of each of the driving transistors, mobility information, dimming information, and temperature information, and an afterimage compensator configured to generate second data based on age information of each light emitting element and the first data, generate third data based on a current amount corresponding to the first data and a current amount corresponding to the second data, and generate the age information by accumulating the third data.
    Type: Application
    Filed: May 17, 2023
    Publication date: April 25, 2024
    Inventors: Joon Hyeok JEON, Byoung Kwan AN, Sang Myeon HAN, Chang Hun KIM, Seung Ho PARK, Seok Gyu BAN, Nam Jae LIM
  • Publication number: 20240121809
    Abstract: A method of a first terminal may include: identifying first RB set(s) to be used for SL communication among consecutive RB sets through an LBT procedure; identifying a first subchannel group included in the first RB set(s) and a second subchannel group including a first PRB in the first RB set(s), the first PRB being not included in the first subchannel group; configuring the first PRB within the second subchannel group as an SL communication resource; and transmitting, to a second terminal, control information indicating that the first PRB is configured as the SL communication resource.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 11, 2024
    Inventors: Jun Hyeong KIM, Go San NOH, Il Gyu KIM, Man Ho PARK, Nak Woon SUNG, Jae Su SONG, Nam Suk LEE, Hee Sang CHUNG, Min Suk CHOI
  • Publication number: 20230324089
    Abstract: The present invention relates to a cooling apparatus, having increased cooling efficiency, which has a cooling rod passing through the inside of a storage receptacle such that an object to be cooled stored inside the storage receptacle is cooled by means of the cooling rod, and in which the cooling rod or the storage receptacle is filled with an auxiliary cooling solution for increasing the cooling efficiency, thereby cooling the inside of the storage receptacle to a predetermined temperature even in an environment with a high external temperature.
    Type: Application
    Filed: May 18, 2023
    Publication date: October 12, 2023
    Inventors: Sung-Chul PARK, Nam-Gyu PARK
  • Publication number: 20230197297
    Abstract: Proposed is a spacer grid of a nuclear fuel assembly that may be manufactured using 3D printing with a high degree of design freedom, excluding sheet metal processing and welding processing. The spacer grid of the nuclear fuel assembly has hollow grid cells (110) having inner walls (111) arranged in a square lattice structure and connected to each other by being circumscribed, each of the grid cells including: a plurality of elastic support portions (112) protrudingly provided by being curved inwardly from the inner walls (111) and elastically supporting a fuel rod (10) in a state in which at least three elastic support portions are disposed at equal angles; and a plurality of inner mixing vanes (113) protrudingly provided while each upper tip portion thereof spirally turns along an associated one of the inner walls above the elastic support portions (112).
    Type: Application
    Filed: November 4, 2019
    Publication date: June 22, 2023
    Inventors: Joo Young Ryu, Chae Young Nam, Han Gil Woo, Nam Gyu Park
  • Patent number: 11665917
    Abstract: An energy harvesting system for generating electrical energy, includes a first substrate, a perovskite layer formed on the first substrate, a charge transport layer disposed on the perovskite layer, and the charge transport layer being configured to slide over the perovskite layer, and a second substrate formed on the charge transport layer.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: May 30, 2023
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Nam-Gyu Park, Ma Chunqing, Yeon Woo Choi
  • Patent number: 11561038
    Abstract: The present invention relates to a grain refrigerator including a housing having a grain storage space formed thereon to discharge grains stored therein, a fixing rod located at the center of the inside lower portion of the housing, dew condensation prevention means fixed to the fixing rod, a support plate located on a top periphery of the dew condensation prevention means, an evaporator disposed on the support plate to generate cool air, and a cooling tube disposed on a top periphery of the support plate on the outside of the evaporator to cool the grains, wherein a first pipe and a second pipe connected to the lower portion of the evaporator pass through a through hole of the support plate and a first drain hole of the dew condensation prevention means and are thus exposed to the outside of the housing.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: January 24, 2023
    Inventors: Sung-Chul Park, Nam-Gyu Park
  • Patent number: 11501884
    Abstract: System for separating and coupling a nuclear fuel assembly from/to a top nozzle which has a flow channel plate with guide holes. The system includes a lock insert and a separation member. The lock insert includes an insertion part provided on a top portion of a hollow body. The separation member is configured to separate the insertion part from a guide hole. The insertion part is variable in size. The insertion part comprises a first latching member and a second latching member, each having a step which contacts the flow channel plate. The first latching member includes a latching groove which is inserted into a member protruding from the top surface of the flow channel plate. The second latching member contacts a bottom surface of the flow channel plate. The separation member provides a space accommodating an outer circumferential surface of the first latching member.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: November 15, 2022
    Assignee: KEPCO NUCLEAR FUEL CO., LTD.
    Inventors: Su Pil Ryu, Seong Soo Kim, Ba Leum Kim, Joo Hong Chun, Nam Gyu Park, Jong Sung Yoo
  • Patent number: 11355251
    Abstract: Disclosed is a system for separating and coupling a top nozzle of a nuclear fuel assembly. There is provided a lock insert configured to support the top nozzle of the nuclear fuel assembly by being coupled to a guide hole provided in a flow channel plate of the top nozzle, the lock insert including: a body in a hollow shape; and an insertion part provided on a top portion of the body and inserted into the guide hole, wherein a circumference of the insertion part is variable in size, thereby being capable of being inserted into the guide hole. Accordingly, disassembly and reassembly of the top nozzle of the nuclear fuel assembly and the lock insert are simplified, thereby simplifying and reducing the number of processes involved therein. Accordingly, the system is effective for maintenance and repair of the nuclear fuel assembly.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: June 7, 2022
    Assignee: KEPCO NUCLEAR FUEL CO., LTD.
    Inventors: Joo Hong Chun, Seong Soo Kim, Ba Leum Kim, Su Pil Ryu, Nam Gyu Park, Jong Sung Yoo
  • Publication number: 20220102634
    Abstract: A method of preparing a light-emitting material, the method including mixing a first precursor solution including a first precursor and a first solvent with a second precursor solution including a second precursor and a second solvent to form a precipitate, and separating the precipitate to obtain a light-emitting material, wherein a solubility of the first precursor in the first solvent may be greater than a solubility of the first precursor in the second solvent, and a solubility of the second precursor in the second solvent may be greater than a solubility of the second precursor in the first solvent. A light-emitting material prepared by the method, and a light-emitting device including the light-emitting material is also described.
    Type: Application
    Filed: May 25, 2021
    Publication date: March 31, 2022
    Inventors: YongChurl KIM, Nam-Gyu PARK
  • Publication number: 20220059785
    Abstract: An energy harvesting system for generating electrical energy, includes a first substrate, a perovskite layer formed on the first substrate, a charge transport layer disposed on the perovskite layer, and the charge transport layer being configured to slide over the perovskite layer, and a second substrate formed on the charge transport layer.
    Type: Application
    Filed: August 18, 2021
    Publication date: February 24, 2022
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Nam-Gyu PARK, Ma CHUNQING, Yeon Woo CHOI
  • Patent number: 11192906
    Abstract: Provided is an adduct represented by Formula 1: A.PbY2.Q??(1) wherein A is an organic or inorganic halide, Y is F?, Cl?, Br? or I? as a halogen ion, and Q is a Lewis base including a functional group containing a nitrogen (N), oxygen (O) or sulfur (S) atom with an unshared pair of electrons as an electron pair donor. The Lewis base is maintained more stable in the lead halide adduct. Therefore, the use of the adduct enables the fabrication of a perovskite solar cell with high conversion efficiency.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: December 7, 2021
    Assignees: GlobalFrontier Center for Multiscale EnergySystems, Seoul National University R&DB Foundation, Research&Business Foundation Sungkyunkwan Univ.
    Inventors: Man Soo Choi, Namyoung Ahn, Nam-Gyu Park, Dae-Yong Son, In-Hyuk Jang, Seong Min Kang
  • Patent number: 11183310
    Abstract: Embodiments of a bottom nozzle of a nuclear fuel assembly provided with flow holes by utilizing a layered aircraft airfoil structure are provided. The bottom nozzle not only increases efficiency of filtering foreign substances by minimizing a size of the flow holes by constituting a shape of flow holes into cross stripes but also prevents coolant water flow velocity drop through prevention of coolant water pressure drop by constituting a lateral sectional shape of the grid frames constituting the cross stripes into an aircraft airfoil type.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: November 23, 2021
    Assignee: KEPCO NUCLEAR FUEL CO., LTD.
    Inventors: Joo Hong Chun, Seong Soo Kim, Su Pil Ryu, Do Gwan Lee, Nam Gyu Park, Jong Sung Yoo
  • Publication number: 20200373032
    Abstract: Disclosed is a system for separating and coupling a top nozzle of a nuclear fuel assembly. There is provided a lock insert configured to support the top nozzle of the nuclear fuel assembly by being coupled to a guide hole provided in a flow channel plate of the top nozzle, the lock insert including: a body in a hollow shape; and an insertion part provided on a top portion of the body and inserted into the guide hole, wherein a circumference of the insertion part is variable in size, thereby being capable of being inserted into the guide hole. Accordingly, disassembly and reassembly of the top nozzle of the nuclear fuel assembly and the lock insert are simplified, thereby simplifying and reducing the number of processes involved therein. Accordingly, the system is effective for maintenance and repair of the nuclear fuel assembly.
    Type: Application
    Filed: May 8, 2020
    Publication date: November 26, 2020
    Applicant: KEPCO NUCLEAR FUEL CO., LTD.
    Inventors: Joo Hong Chun, Seong Soo Kim, Ba Leum Kim, Su Pil Ryu, Nam Gyu Park, Jong Sung Yoo
  • Publication number: 20200373026
    Abstract: A separating and coupling system of a nuclear fuel assembly top nozzle. The system includes a top nozzle; a flow channel plate provided at a lower portion of the top nozzle and allowing coolant to pass therethrough; a guide hole provided in the flow channel plate; a lock insert in a hollow shape including an insertion part configured to be inserted into the guide hole; and a separation member configured to separate the lock insert from the guide hole. The circumference of the insertion part is variable in size, thereby being capable of being inserted into and separated from the guide hole. Accordingly, disassembly and reassembly of the top nozzle of the nuclear fuel assembly and the lock insert are simplified, thereby simplifying the process and reducing the number of processes. The system is effective for maintenance and repair of the nuclear fuel assembly.
    Type: Application
    Filed: May 8, 2020
    Publication date: November 26, 2020
    Applicant: KEPCO NUCLEAR FUEL CO., LTD.
    Inventors: Su Pil Ryu, Seong Soo Kim, Ba Leum Kim, Joo Hong Chun, Nam Gyu Park, Jong Sung Yoo
  • Patent number: 10840028
    Abstract: The present disclosure relates to a preparing method of a large-area perovskite thin film, comprising: forming an organic metal halide-alkylamine compound by exposing an organic metal halide compound having a perovskite structure to an alkylamine gas; preparing a coating solution by adding a solvent on the organic metal halide-alkylamine compound; and preparing a perovskite thin film by coating the coating solution on a substrate.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: November 17, 2020
    Assignees: Research & Business Foundation Sungkyunkwan University, GLOBAL FRONTIER CENTER FOR MULTILSCALE ENERGY SYSTEMS
    Inventors: Nam Gyu Park, Dong Nyuk Jung
  • Publication number: 20200303129
    Abstract: The present disclosure described herein generally relates to a dye-sensitized solar cell including an organic-inorganic composite dye having a perovskite structure, and a producing method of the same
    Type: Application
    Filed: June 8, 2020
    Publication date: September 24, 2020
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Nam-Gyu PARK, Huiseon KIM, Changryul LEE, Jeong-Hyeok IM
  • Publication number: 20200284496
    Abstract: The present invention relates to a grain refrigerator including a housing having a grain storage space formed thereon to discharge grains stored therein, a fixing rod located at the center of the inside lower portion of the housing, dew condensation prevention means fixed to the fixing rod, a support plate located on a top periphery of the dew condensation prevention means, an evaporator disposed on the support plate to generate cool air, and a cooling tube disposed on a top periphery of the support plate on the outside of the evaporator to cool the grains, wherein a first pipe and a second pipe connected to the lower portion of the evaporator pass through a through hole of the support plate and a first drain hole of the dew condensation prevention means and are thus exposed to the outside of the housing.
    Type: Application
    Filed: May 22, 2020
    Publication date: September 10, 2020
    Inventors: SUNG-CHUL PARK, NAM-GYU PARK
  • Patent number: 10720282
    Abstract: The present disclosure described herein generally relates to a dye-sensitized solar cell including an organic-inorganic composite dye having a perovskite structure, and a producing method of the same.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: July 21, 2020
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Nam-Gyu Park, Huiseon Kim, Changryul Lee, Jeong-Hyeok Im
  • Publication number: 20200227180
    Abstract: Embodiments of a bottom nozzle of a nuclear fuel assembly provided with flow holes by utilizing a layered aircraft airfoil structure are provided. The bottom nozzle not only increases efficiency of filtering foreign substances by minimizing a size of the flow holes by constituting a shape of flow holes into cross stripes but also prevents coolant water flow velocity drop through prevention of coolant water pressure drop by constituting a lateral sectional shape of the grid frames constituting the cross stripes into an aircraft airfoil type.
    Type: Application
    Filed: December 31, 2019
    Publication date: July 16, 2020
    Applicant: KEPCO NUCLEAR FUEL CO., LTD.
    Inventors: Joo Hong Chun, Seong Soo Kim, Su Pil Ryu, Do Gwan Lee, Nam Gyu Park, Jong Sung Yoo
  • Publication number: 20190221371
    Abstract: The present disclosure relates to a preparing method of a large-area perovskite thin film, comprising: forming an organic metal halide-alkylamine compound by exposing an organic metal halide compound having a perovskite structure to an alkylamine gas; preparing a coating solution by adding a solvent on the organic metal halide-alkylamine compound; and preparing a perovskite thin film by coating the coating solution on a substrate.
    Type: Application
    Filed: January 16, 2019
    Publication date: July 18, 2019
    Applicants: Research & Business Foundation Sungkyunkwan University, Global Frontier Center For Multiscale Energy Systems
    Inventors: Nam Gyu PARK, Dong Nyuk JUNG