Patents by Inventor Chang-Hoon Choi

Chang-Hoon 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: 20250026492
    Abstract: In an assembly system of an aircraft including a fuselage and a wing, the aircraft assembly system may include: a jig unit coupled to the wing to move integrally with the wing; a transfer unit connected to the jig unit and transferring the wing toward the fuselage; a position adjusting unit detachably connected to the jig unit and adjusting a position of the jig unit; and a measuring unit configured for measuring positions of the fuselage and the wing, wherein the fuselage may be relatively fixed to the movement of the wing, wherein the measuring unit may be configured to set a fuselage coordinate system and a wing coordinate system for the fuselage and the wing, respectively, wherein the position adjusting unit may be configured to move the jig unit so that the wing coordinate system coincides with the fuselage coordinate system.
    Type: Application
    Filed: November 30, 2023
    Publication date: January 23, 2025
    Inventors: Dong Ho LEE, Sang Bin HAN, Myung Kyun JEONG, Chang Hoon LEE, Tae Hwan KWAK, Cheol Bae PARK, Jun Young CHOI, Dong Han LEE, Suk Hyun YOON, Jeong Rak KIM
  • Patent number: 12181545
    Abstract: A coil assembly for use as a transmission and/or receiving coil in an MR system comprises a dipole antenna assembly with multiple dipole antennas. Connection elements are converted from an electrically conductive state to an electrically non-conductive state. In the electrically conductive state, the dipole antennas form a cylindrical volume coil and/or a conductor loop assembly, in particular a flat conductor loop assembly. The connection elements comprise blocking circuits which automatically block when a high-frequency alternating voltage with a frequency corresponding to the blocking frequency of the connection element blocking circuits is applied to the coil assembly.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: December 31, 2024
    Assignee: Forschungszentrum Jülich GmbH
    Inventors: Suk Min Hong, Nadim Joni Shah, Chang-Hoon Choi, Jörg Felder
  • Publication number: 20240369654
    Abstract: Coils and assemblies for magnetic resonance imaging or spectroscopy, and methods for generating or detecting magnetic fields with coils. The coil includes a first loop and a second loop. The first loop includes one or more capacitors. The second loop includes one or more capacitors. The second loop is connected to the first loop by a conductor. A total capacitance of the first loop is different from a total capacitance of the second loop.
    Type: Application
    Filed: April 30, 2024
    Publication date: November 7, 2024
    Inventors: Suk-Min HONG, Nadim Joni SHAH, Chang-Hoon CHOI, Jörg FELDER
  • Publication number: 20240351065
    Abstract: Provided is a bilayer composition for surface treatment of a steel plate and a surface-treated steel plate using same. The bilayer composition for surface treatment of a steel plate, comprising an undercoat coating composition including 1 to 12 wt % of a phenoxy resin, 0.001 to 1.0 wt % of colloidal silica, 0.001 to 1.0 wt % of a silane coupling agent, 0.1 to 1.0 wt % of a corrosion inhibitor, 0.001 to 1.0 wt % of a phosphoric acid compound as a long-term corrosion resistance improving agent, and a balance of water; and a topcoat coating composition including 0.1 to 5.0 wt % of an acrylic acid resin, 30 to 50 wt % of colloidal silica, 40 to 60 wt % of alkoxy silane, 5 to 15 wt % of an acrylate-based monomer, 0.01 to 1.00 wt % of an acidity control agent, and a balance of an organic solvent.
    Type: Application
    Filed: July 3, 2024
    Publication date: October 24, 2024
    Inventors: Chang-Hoon CHOI, Won-Ho SON, Hee-Jea EUN
  • Publication number: 20240353081
    Abstract: A lighting apparatus for a vehicle includes a base plate having a plurality of mounting portions and a plurality of lighting modules detachably mounted to the plurality of mounting portions. The plurality of lighting modules is configured to radiate light and to define a design of the lighting apparatus depending on locations at which the lighting modules are mounted.
    Type: Application
    Filed: November 21, 2023
    Publication date: October 24, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Chang Hoon Choi, Byeong Ho Jeong
  • Patent number: 12123931
    Abstract: A dipole antenna array includes at least two dipole antenna elements. Each respective dipole antenna element has at one end a fold which consists of a bend, a bent region, and the projection of the bent region of the dipole antenna element onto a length of the dipole antenna element. Each respective dipole antenna element at least partially encloses a cavity.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: October 22, 2024
    Assignee: FORSCHUNGSZENTRUM JUELICH GMBH
    Inventors: Chang-Hoon Choi, Joerg Felder, Suk Min Hong, Christoph Lerche, Nadim Joni Shah
  • Publication number: 20240334084
    Abstract: A defective pixel correction device is provided. The defective pixel correction device includes: a pixel grading circuit configured to output a grade map including a plurality of grades indicating defect levels and respectively corresponding to a plurality of pixels included in an input image; a pixel selection circuit configured to select one or more candidate pixels from among the plurality of pixels, based on whether the plurality of grades correspond to a correction level, in the grade map; and a correction circuit configured to correct the one or more candidate pixels.
    Type: Application
    Filed: January 18, 2024
    Publication date: October 3, 2024
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Hoon CHOI, Hyunyup Kwak, Jaeuk Ahn, Yongmi Lee, Seungwon Choi
  • Publication number: 20240288521
    Abstract: The present disclosure relates to an antenna assembly for an imaging method, a use of an antenna assembly and a tomography system, in particular for MRI or simultaneous MR-PET/-SPECT. An antenna assembly for an imaging method comprises at least two antennas, wherein each of the two antennas is designed as a J-pole antenna with a radiation section and a feed section. The radiation sections of the two antennas are arranged crossing each other. In this way, effective decoupling of the antennas is achieved by simple means.
    Type: Application
    Filed: February 19, 2024
    Publication date: August 29, 2024
    Inventors: Chang-Hoon Choi, Nadim Joni Shah, Jörg Felder
  • Publication number: 20240291156
    Abstract: The present disclosure relates to an antenna assembly for an imaging method, a use of an antenna assembly and a tomography system, in particular for MRI or simultaneous MR-PET/SPECT. An antenna assembly for an imaging method comprises at least two adjacent antennas, wherein each of the at least two antennas is designed as a J-pole antenna with a radiation section and a feed section. The at least two antennas are arranged alternately at a first angle and a second angle different from the first angle in relation to a reference surface. In this way, effective decoupling of the two antennas is achieved by simple means.
    Type: Application
    Filed: February 19, 2024
    Publication date: August 29, 2024
    Inventors: Nadim Joni Shah, Chang-Hoon Choi, Jörg Felder, Suk-Min Hong
  • Publication number: 20240270979
    Abstract: Provided is a surface-treated steel sheet including: a steel sheet; and a corrosion-resistant film layer formed on at least one surface of the steel sheet. The corrosion-resistant film layer includes a product formed by a hydrolysis reaction of silica and an alkoxy silane and an acrylate-based polymer, comprises 25 to 65 wt % of carbon (C), 20 to 70 wt % of silicon (Si), and 1 to 40 wt % of oxygen (O), and in the corrosion-resistant film layer, a ratio of silicon (Si) to oxygen (O) (Si—O bonding) and silicon (Si) to carbon (C) (Si—C bonding) is 80 to 95 wt %:5 to 20 wt %.
    Type: Application
    Filed: March 22, 2024
    Publication date: August 15, 2024
    Inventors: Chang-Hoon CHOI, Dong-Yun KIM, Min-Ho JO, Jae-Duck KO, Won-Ho SON, Jong-Hwa KIM
  • Patent number: 12054643
    Abstract: Provided is a composition for steel sheet surface coating, the composition comprising colloidal silica, a silane, a monomer, an organic resin, an acidity adjuster, a long-term corrosion-resistance improver, and a solvent; and a steel sheet coated with the composition. The steel sheet has excellent acid resistance, and maintains thickness uniformity thereof even when exposed to an acid for an extended period of time.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: August 6, 2024
    Assignees: POSCO CO., LTD, NOROO COIL COATINGS CO., LTD.
    Inventors: Chang-Hoon Choi, Dong-Yun Kim, Won-Ho Son, Hee-Jea Eun, Jae-Duck Ko
  • Patent number: 12030082
    Abstract: Provided is a bilayer composition for surface treatment of a steel plate and a surface-treated steel plate using same. The bilayer composition for surface treatment of a steel plate, comprising an undercoat coating composition including 1 to 12 wt % of a phenoxy resin, 0.001 to 1.0 wt % of colloidal silica, 0.001 to 1.0 wt % of a silane coupling agent, 0.1 to 1.0 wt % of a corrosion inhibitor, 0.001 to 1.0 wt % of a phosphoric acid compound as a long-term corrosion resistance improving agent, and a balance of water; and a topcoat coating composition including 0.1 to 5.0 wt % of an acrylic acid resin, 30 to 50 wt % of colloidal silica, 40 to 60 wt % of alkoxy silane, 5 to 15 wt % of an acrylate-based monomer, 0.01 to 1.00 wt % of an acidity control agent, and a balance of an organic solvent.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: July 9, 2024
    Assignee: POSCO CO., LTD
    Inventors: Chang-Hoon Choi, Won-Ho Son, Hee-Jea Eun
  • Publication number: 20240185558
    Abstract: An image sensing device including an image sensor configured to output a raw image by capturing an image of a subject and an image signal processor configured to perform a bad pixel correction process on the raw image on an image patch-by-image patch unit, compare pixels of an image patch of the raw image with a local saturation threshold value, determine a state of local saturation of the image patch based on a number of saturated pixels whose pixel values exceed the local saturation threshold value, and output a corrected image patch, which is obtained by correcting a pixel of the image patch with a corrected pixel value, with a replacement pixel value, or with a raw pixel value depending on the state of local saturation of the image patch.
    Type: Application
    Filed: November 20, 2023
    Publication date: June 6, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Chang Hoon CHOI, Dong-Bum CHOI, Hyun Yup KWAK, Seung Won CHOI
  • Patent number: 11939489
    Abstract: Provided is a composition for surface treatment of a steel sheet, the composition having excellent resistance to an acid, such as sulfuric acid, and to a coated steel sheet to which the composition for surface treatment is applied, wherein the composition for surface treatment comprises 30-50% wt % of colloidal silica containing 5-20 nm-sized silica, 40-60% wt % of silane containing three or more alkoxy groups, 5-15 wt % of an acrylate-based organic monomer, 0.01-1 wt % of an acid, and 1-15 wt % of a solvent.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: March 26, 2024
    Assignees: POSCO CO., LTD, NOROO COIL COATINGS CO., LTD.
    Inventors: Chang-Hoon Choi, Dong-Yun Kim, Min-Ho Jo, Jae-Duck Ko, Won-Ho Son, Jong-Hwa Kim
  • Patent number: D1045153
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: October 1, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Chang Hoon Choi, Dai Sung Kim, Byeong Ho Jeong, Won Suk Kang
  • Patent number: D1045154
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: October 1, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Chang Hoon Choi, Dai Sung Kim, Byeong Ho Jeong, Won Suk Kang
  • Patent number: D1045155
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: October 1, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Chang Hoon Choi, Dai Sung Kim, Byeong Ho Jeong, Won Suk Kang
  • Patent number: D1045156
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: October 1, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Chang Hoon Choi, Dai Sung Kim, Byeong Ho Jeong, Won Suk Kang
  • Patent number: D1045157
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: October 1, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Chang Hoon Choi, Dai Sung Kim, Byeong Ho Jeong, Won Suk Kang
  • Patent number: D1050511
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: November 5, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Chang Hoon Choi, Dai Sung Kim, Byeong Ho Jeong, Won Suk Kang