Patents by Inventor Jin Uk Choi

Jin Uk 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: 20250031480
    Abstract: An over-soldering prevented tabbing device for manufacturing solar cell modules is disclosed in which the over-soldering is prevented from occurring in the tabbing device for performing the soldering process in manufacturing the solar cell modules. The over-soldering prevented tabbing device according to an embodiment of the present disclosure includes a solar cell module cell that is transported on a conveyor by a unit of cell; a soldering head installed above the solar cell module cell and having a built-in heat source that provides heat to solder the flux coated on the transported solar cell module cell; a driver reciprocating the soldering head in a direction in which the conveyor moves; and a controller controlling the driver.
    Type: Application
    Filed: July 6, 2022
    Publication date: January 23, 2025
    Applicant: HANWHA SOLUTIONS CORPORATION
    Inventors: Min Su LEE, Hyung Do KIM, Jin UK CHOI, Moon Taek LIM, Sung Jin KIM
  • Publication number: 20240427952
    Abstract: A strength prediction system for a multilayer material with n films stacked includes an input portion where one or more values are entered. The values include the elastic modulus of each layer, Poisson's ratio, Young's modulus, thickness, stacking angle, principal stress direction strength, and the total thickness of the multilayer material. The strength prediction system also includes a control portion that calculates the strength of a multilayer material by applying the values entered in the input portion, a display connected to the control portion, and a storage portion connected to the control portion. The control portion defines a strength value of a multilayer material. A method for predicting the strength of a multilayer material having two or more films stacked thereto is also provided.
    Type: Application
    Filed: June 1, 2023
    Publication date: December 26, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Sung Nam Moon, Hyun Tae Kim, Sang Jin Jeon, Jin Mi Jung, Jin Uk Choi, Dam Hyeok Im
  • Publication number: 20230394193
    Abstract: A system and method for predicting the physical properties of a multilayer material are provided. The system and method can predict physical properties such as a coefficient of thermal expansion and coefficient of water expansion of the multilayer material, and a warpage of the multilayer material when developing the multilayer material.
    Type: Application
    Filed: August 22, 2022
    Publication date: December 7, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Sung Nam Moon, Hyun Tae Kim, Sang Jin Jeon, Jin Mi Jung, Jin Uk Choi, Dam Hyeok Im
  • Publication number: 20230334195
    Abstract: The present technology relates to a system and method for predicting the physical properties of a multilayer material, and the system and method may predict physical properties such as the elastic modulus, shear modulus, and Poisson's ratio of an entire laminate when a multilayer material having a laminated structure is developed, and may predict not only the homogenized robustness of the entire laminate of the multilayer material, but also the stress and strain of each layer at the time of occurrence of external forces including expansion stress considering environmental factors such as a temperature change or a humidity change are generated.
    Type: Application
    Filed: August 22, 2022
    Publication date: October 19, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Sung Nam Moon, Hyun Tae Kim, Sang Jin Jeon, Jin Mi Jung, Jin Uk Choi, Dam Hyeok Im
  • Patent number: 10900949
    Abstract: Provided are methods of evaluating deodorizing ability of a superabsorbent polymer and a product including the same. According to the methods of evaluating deodorizing ability of the present invention, deodorizing ability of the superabsorbent polymer and the product including the same may be evaluated by measuring changes in the concentration of ammonia naturally generated in a wet state which is made close to the actual use environment. Accordingly, the deodorizing ability of the superabsorbent polymer and the product including the same may be evaluated more accurately and efficiently.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: January 26, 2021
    Inventors: Jin Uk Choi, Young Sam Kim, Bo Hee Park
  • Patent number: 10814308
    Abstract: A superabsorbent polymer composition includes superabsorbent polymer particles, having a crosslinked polymer of water-soluble ethylenically unsaturated monomers including acid groups, of which at least a part are neutralized; and a particulate antimicrobial agent having a quaternary ammonium salt of a silane-based compound. The superabsorbent polymer composition exhibits improved antimicrobial and deodorizing properties without deterioration of the superabsorbent polymer properties such as centrifugal retention capacity.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: October 27, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Jin Woo Lee, Young Sam Kim, Jin Uk Choi
  • Publication number: 20190351391
    Abstract: A superabsorbent polymer composition includes superabsorbent polymer particles, having a crosslinked polymer of water-soluble ethylenically unsaturated monomers including acid groups, of which at least a part are neutralized; and a particulate antimicrobial agent having a quaternary ammonium salt of a silane-based compound. The superabsorbent polymer composition exhibits improved antimicrobial and deodorizing properties without deterioration of the superabsorbent polymer properties such as centrifugal retention capacity.
    Type: Application
    Filed: October 19, 2018
    Publication date: November 21, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jin Woo Lee, Young Sam Kim, Jin Uk Choi
  • Publication number: 20190107527
    Abstract: Provided are methods of evaluating deodorizing ability of a superabsorbent polymer and a product including the same. According to the methods of evaluating deodorizing ability of the present invention, deodorizing ability of the superabsorbent polymer and the product including the same may be evaluated by measuring changes in the concentration of ammonia naturally generated in a wet state which is made close to the actual use environment. Accordingly, the deodorizing ability of the superabsorbent polymer and the product including the same may be evaluated more accurately and efficiently.
    Type: Application
    Filed: October 23, 2017
    Publication date: April 11, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jin Uk Choi, Young Sam Kim, Bo Hee Park