Patents by Inventor Yeong Choi

Yeong 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: 20250143171
    Abstract: The present invention relates to an organic compound represented by the following Formula 1, and a high-efficiency and long-lifetime organic light emitting device enabling significantly improved low voltage driving, and having long lifetime, excellent luminous efficiency and the like by employing the same as a light emitting layer host material in the device.
    Type: Application
    Filed: October 28, 2024
    Publication date: May 1, 2025
    Inventors: Yeon-jae CHOI, Si-in KIM, Tae-young KIM, Kyeong-hyeon KIM, Joon-ho KIM, Hyuk-woo JANG, Do-yeong CHOI, Seo-youn PARK, Kyeong-wan KIM, Se-jin LEE
  • Publication number: 20250143181
    Abstract: The present invention relates to an organic compound represented by the following Formula 1, and a high-efficiency and long-lifetime organic light emitting device enabling significantly improved low voltage driving, and having long lifetime, excellent luminous efficiency and the like by employing the same as a light emitting layer host material in the device.
    Type: Application
    Filed: October 28, 2024
    Publication date: May 1, 2025
    Inventors: Hyuk-woo JANG, Si-in KIM, Tae-young KIM, Kyeong-hyeon KIM, Joon-ho KIM, Yeon-jae CHOI, Do-yeong CHOI, Seo-youn PARK, Kyeong-wan KIM, Se-jin LEE
  • Publication number: 20250114023
    Abstract: Provided is a method for producing a biosignal measurement electrode including: preparing a conductive polymer including a coil-type chain structure having a coil shape; providing a sugar alcohol and a water-soluble polymer to the conductive polymer to produce an electrode source including an expanded chain structure in which the coil-type chain structure is expanded and linearly arranged; forming a coating layer by providing the electrode source on a substrate; and producing the biosignal measurement electrode by annealing the coating layer.
    Type: Application
    Filed: October 1, 2024
    Publication date: April 10, 2025
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Tae il KIM, Joo Hwan SHIN, Ji Yeong CHOI
  • Publication number: 20250074928
    Abstract: The present invention relates to an organic compound represented by the following [Formula 1], and a high-efficiency and long-lifetime organic light emitting device enabling significantly improved low voltage driving and having long lifetime, excellent luminous efficiency and the like by employing the same as a light emitting layer host material in the device.
    Type: Application
    Filed: August 21, 2024
    Publication date: March 6, 2025
    Applicant: SFC CO., LTD.
    Inventors: Kyeong-hyeon KIM, Si-in KIM, Hyuk-woo JANG, Do-yeong CHOI, Seo-youn PARK, Yeon-jae CHOI, Kyeong-wan KIM, Se-jin LEE
  • Publication number: 20240407254
    Abstract: Disclosed is an organic compound represented by Formula 1: Also disclosed is an organic light emitting device including a light emitting layer employing the organic compound as a host. The use of the organic compound enables low voltage driving of the organic light emitting device and ensures significantly long lifetime and improved luminous efficiency of the device.
    Type: Application
    Filed: May 16, 2024
    Publication date: December 5, 2024
    Applicant: SFC CO., LTD.
    Inventors: Ji-yung KIM, Si-in KIM, Kyeong-hyeon KIM, Hyuk-woo JANG, Do-yeong CHOI, Seo-youn PARK, Yeon-jae CHOI, Kyeong-wan KIM, Se-jin LEE
  • Publication number: 20240389457
    Abstract: Organic compounds represented by Formulas 1 and 2 are disclosed: Also disclosed is an organic light emitting device including a light emitting layer employing the organic compounds as host materials. The use of the organic compounds enables low voltage driving of the organic light emitting device and ensures significantly long lifetime and improved luminous efficiency of the device.
    Type: Application
    Filed: May 16, 2024
    Publication date: November 21, 2024
    Applicant: SFC CO., LTD.
    Inventors: Ji-yung KIM, Si-in KIM, Kyeong-hyeon KIM, Hyuk-woo JANG, Do-yeong CHOI, Seo-youn PARK, Yeon-jae CHOI, Kyeong-wan KIM, Se-jin LEE
  • Publication number: 20240387829
    Abstract: In a method for preparing a cathode of a secondary battery, a method for preparing a purified N-methyl pyrrolidinone (NMP), and a method for purifying a waste NMP, an inhibitor is added to prevent NMP from being decomposed to produce formaldehyde during the process. 1. The inhibitor may be a phenol-based antioxidant and/or an amine-based light stabilizer.
    Type: Application
    Filed: May 16, 2024
    Publication date: November 21, 2024
    Inventors: JAE WON SHIM, SUNG WON SHIM, BYUNG KI SON, HWAN CHOI, YOUN SOO SHIN, TAE GI CHOI, HWA YEONG CHOI, YEONG SU CHOO
  • Publication number: 20240338955
    Abstract: The present invention discloses an analysis apparatus (100) including: an information receiving unit (110) configured to receive a tissue image of a tissue of interest provided with an exploring material with which a labeling material for analysis is bonded and transcriptome information sharing spatial information of the tissue of interest, a spatial mapping unit (120) configured to generate spatial mapping information by spatially mapping the tissue image by the labeling material of the exploring material with the spatially reserved transcriptome information, a transcriptome information extraction unit (150) configured to extract the transcriptome information in the tissue relating to distribution of the exploring material from the spatial mapping information, and a molecular marker analysis unit (160) configured to analyze a molecular marker relating to the distribution of the exploring material in the tissue of interest through the extraction.
    Type: Application
    Filed: May 23, 2022
    Publication date: October 10, 2024
    Inventors: Jin Yeong CHOI, Jeongbin PARK
  • Patent number: 12050471
    Abstract: A map generating system for autonomous movement of a robot includes a three-dimensional (3D) point cloud map input device, a 3D point cloud map regeneration device that extracts only 3D point cloud data corresponding to an arbitrary reference height from the 3D point cloud map to regenerate the 3D point cloud map, an unoccupied area generation device that extracts ground point cloud data from the 3D point cloud map to set an unoccupied area into which the robot is able to move, an occupied area generation device that extracts obstacle point cloud data from the 3D point cloud map to set an occupied area into which the robot is unable to move, and a two-dimensional (2D) map generation device that adds the unoccupied area and the occupied area to an area on the 3D point cloud map to generate a 2D map.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: July 30, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Tae Young Lee, Jun Yeong Choi, Ho Jun Ji
  • Publication number: 20240229652
    Abstract: The present invention relates to a gas turbine blade having a shelf squealer tip, the gas turbine blade including an airfoil-shaped blade housing, and a squealer tip extending from an edge portion of a tip surface that is an end surface of the blade housing, in which the squealer tip is formed only on a part of the edge portion of the tip surface. According to the present invention, it is possible to maximize film-cooling performance on the tip surface and additionally reduce an aerodynamic loss by suppressing high-temperature main flow reattachment and swirl flow generation on the tip surface.
    Type: Application
    Filed: May 4, 2022
    Publication date: July 11, 2024
    Inventors: Jeong-Woo KIM, Hyung-Hee CHO, Joo-Hyoung LEE, Min-Ho BANG, Jeong-Ju KIM, Seung-Yeong CHOI, Tae-Hyun KIM, Hee-Seung PARK
  • Publication number: 20240111189
    Abstract: A display apparatus includes a liquid crystal panel disposed on a back-light unit; and a viewing angle control unit disposed between the back-light unit and the liquid crystal panel, wherein the viewing angle control unit includes light-blocking patterns having a light-blocking material and variable patterns disposed between a first control electrode and a second control electrode, wherein the variable patterns are extended in a direction perpendicular to the light-blocking patterns, and wherein transmittance of each variable pattern is changed according to a voltage applied to the first control electrode and the second control electrode, thereby preventing a distraction of people around a user by selectively sharing a realized image.
    Type: Application
    Filed: December 15, 2023
    Publication date: April 4, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: Jae Yeong CHOI, Joon Ho LEE, Dae Yun IM
  • Patent number: 11899312
    Abstract: A display apparatus includes a liquid crystal panel disposed on a back-light unit; and a viewing angle control unit disposed between the back-light unit and the liquid crystal panel, wherein the viewing angle control unit includes light-blocking patterns having a light-blocking material and variable patterns disposed between a first control electrode and a second control electrode, wherein the variable patterns are extended in a direction perpendicular to the light-blocking patterns, and wherein transmittance of each variable pattern is changed according to a voltage applied to the first control electrode and the second control electrode, thereby preventing a distraction of people around a user by selectively sharing a realized image.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: February 13, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jae Yeong Choi, Joon Ho Lee, Dae Yun Im
  • Patent number: 11731675
    Abstract: A system for exclusive track resource sharing is provided. Some embodiments provide an exclusive track resource sharing system including onboard control units and a resource manager. Onboard control unit is provided in each of trains and is configured to communicate with another onboard control unit in another train. The resource manager is configured to record ownership status information of track resources of the plurality of trains, to provide the ownership status information of the track resources to the onboard control unit, and to generate and deliver a resource entitlement or resource authority to the onboard control unit. The resource authority is configured to be owned by a single onboard control unit. The onboard control unit possessing the resource authority is configured to seize or release the track resources corresponding to the resource authority and to control the track resources corresponding to the resource authority.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: August 22, 2023
    Assignee: KOREA RAILROAD RESEARCH INSTITUTE
    Inventors: Seh Chan Oh, Jong Hyen Baek, Hyeon Yeong Choi, Byung Hun Lee
  • Publication number: 20230192609
    Abstract: Provided is a method for purifying waste N-methyl-2-pyrrolidone, the method comprising the steps of: reacting the waste N-methyl-2-pyrrolidone containing an amine compound with an acid anhydride; converting the amine compound into an amide compound; and removing the amide compound by distillation, thereby manufacturing high-purity N-methyl-2-pyrrolidone that can be reused.
    Type: Application
    Filed: December 20, 2022
    Publication date: June 22, 2023
    Applicant: JAEWON INDUSTRIAL CO., LTD
    Inventors: Sung Won SHIM, Byung Ki SON, Hwan CHOI, Youn Soo SHIN, Hwa Yeong CHOI, Tae Gi CHOI, Yeong Su CHOO
  • Publication number: 20230185307
    Abstract: An embodiment device for planning a path of a robot includes a camera configured to capture an image in a moving direction of the robot and a controller configured to detect a moving obstacle in the image in the moving direction of the robot, to calculate a speed and a moving direction of the moving obstacle based on a change in a location of the moving obstacle, and to set a region of the moving obstacle based on the speed and the moving direction of the moving obstacle, the region being in a form of an ellipse.
    Type: Application
    Filed: July 12, 2022
    Publication date: June 15, 2023
    Inventors: Jun Yeong Choi, Il Yong Yoon
  • Publication number: 20230095681
    Abstract: Provided is a method for purifying an alkylene glycol monoalkyl ether carboxylic acid ester (AGAECE) for photoresist processing, wherein the method comprises the step of distillation after passing industrial AGAECE through a porous adsorbent impregnated with a basic material, and it is possible to obtain a semiconductor-grade high-purity AGAECE maintaining a low acid value and high purity according to the present invention.
    Type: Application
    Filed: September 21, 2022
    Publication date: March 30, 2023
    Applicant: JAEWON INDUSTRIAL CO., LTD
    Inventors: Sung Won SHIM, Byung Ki SON, Hwan CHOI, Youn Soo SHIN, Hwa Yeong CHOI, Ho JEONG
  • Publication number: 20220409698
    Abstract: The present invention relates to a composition which is for preventing or treating bone diseases and includes CCR2 as an active ingredient. It was confirmed that a C—C chemokine receptor type 2 (CCR2) protein, a polynucleotide encoding the CCR2 protein, or a mesenchymal stem cell transduced with the CCR2 according to the present invention neutralize bone disease factor MCP-1, thereby reducing the collagen epitope (CTX-II) and collagen metabolism factors (MMP1 and MMP3) relating to collagen absorption in the body. In addition, it was confirmed that the expression of the SOX9 gene and anti-inflammatory cytokines (TGF-? and IL-10) related to cartilage differentiation was significantly increased. Thus, the present invention has excellent regenerative ability against osteoarthritis and excellent pain suppression and alleviation effects, and thus can be effectively used for preventing or treating bone diseases such as osteoarthritis.
    Type: Application
    Filed: November 15, 2019
    Publication date: December 29, 2022
    Applicant: THE CATHOLIC UNIVERSITY OF KOREA INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Seok-Jung KIM, Mi-La CHO, Hyun-Sik NA, Seon-Yeong LEE, Si-Yeong CHOI, Ji-Ye KWUAN, Keun-Hyung CHO, Goo-Young KIM, Seon-Ae KIM, Eeu-Jeong GO, Jeong-Won CHOI, Jin-Ah BAEK
  • Publication number: 20220334589
    Abstract: A map generating system for autonomous movement of a robot includes a three-dimensional (3D) point cloud map input device, a 3D point cloud map regeneration device that extracts only 3D point cloud data corresponding to an arbitrary reference height from the 3D point cloud map to regenerate the 3D point cloud map, an unoccupied area generation device that extracts ground point cloud data from the 3D point cloud map to set an unoccupied area into which the robot is able to move, an occupied area generation device that extracts obstacle point cloud data from the 3D point cloud map to set an occupied area into which the robot is unable to move, and a two-dimensional (2D) map generation device that adds the unoccupied area and the occupied area to an area on the 3D point cloud map to generate a 2D map.
    Type: Application
    Filed: November 4, 2021
    Publication date: October 20, 2022
    Inventors: Tae Young Lee, Jun Yeong Choi, Ho Jun Ji
  • Publication number: 20220276654
    Abstract: An apparatus for generating multiple paths for a mobile robot includes a multi-path generation module that detects “n” multiple waypoints located at a maximum straight line distance without collision with an obstacle in a space within a predetermined radius in “n” directions centered on the mobile robot, and plans “n” multiple paths to a destination by passing through each of the multiple waypoints as an initial waypoint, and an optimal path selection module that selects a path satisfying a preset cost function requirement among the “n” multiple paths, which are planned, as an optimal path, making it possible to select the optimal path suitable for various driving situations of the mobile robot by simultaneously generating multiple paths along which the mobile robot is to travel from its current location to its destination.
    Type: Application
    Filed: November 4, 2021
    Publication date: September 1, 2022
    Inventors: Hwan Hee Lee, Jun Yeong Choi
  • Publication number: 20220269273
    Abstract: An apparatus for estimating a position of a target may include a particle generator to generate a plurality of particles on a map, a particle selector to calculate position accuracy of each of the plurality of particles, based on data sensed related to a position of a target, and select, as a reference particle, at least one of the plurality of particles, based on the position accuracy, and a position determining device to determine the position of the target, based on the reference particle.
    Type: Application
    Filed: November 16, 2021
    Publication date: August 25, 2022
    Inventors: Jun Yeong Choi, Ho Jun Ji, Hwan Hee Lee, Tae Young Lee