Patents by Inventor Sung Yeol CHOI

Sung Yeol 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: 20240096557
    Abstract: A capacitor component includes a body having a first surface and a second surface opposing each other and including a multilayer structure in which a plurality of dielectric layers are stacked and first and second internal electrodes are alternately disposed with respective dielectric layers interposed therebetween and exposed to the first surface and the second surface, respectively, first and second metal layers covering the first surface and the second surface and connected to the first and second internal electrodes, respectively, first and second ceramic layers covering the first and second metal layers, and first and second external electrodes covering the first and second ceramic layers and connected to the first and second metal layers to be electrically connected to the first and second internal electrodes, respectively.
    Type: Application
    Filed: December 1, 2023
    Publication date: March 21, 2024
    Inventors: Sung Hyun CHO, Byeong Chan KWON, Yong Jin YUN, Ki Pyo HONG, Jae Yeol CHOI
  • Patent number: 11414520
    Abstract: The polyamide-imide copolymer according to the present disclosure makes it possible to provide a polyamide-imide film that is excellent in both thermal stability and mechanical properties, and is capable of realizing anisotropy.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: August 16, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Yunah Yu, Hyung Sam Choi, Byung Guk Kim, Young Sik Eom, Sung Yeol Choi, Sang Gon Kim, Duk Hun Jang
  • Patent number: 11377556
    Abstract: The present disclosure relates to a polyimide-based block copolymer and a polyimide-based block copolymer film including the same. The polyimide-based block copolymer according to the present disclosure makes it possible to provide a polyimide-based film having low haze and yellow index value while exhibiting excellent transparency.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: July 5, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Duk Hun Jang, Byung Guk Kim, Young Sik Eom, Sung Yeol Choi, Sang Gon Kim, Jin Sook Ryu, Sun Ok Oh, Hyung Sam Choi
  • Publication number: 20210277235
    Abstract: The present disclosure relates to a polyimide-based block copolymer and a polyimide-based block copolymer film including the same. The polyimide-based block copolymer according to the present disclosure makes it possible to provide a polyimide-based film having low haze and yellow index value while exhibiting excellent transparency.
    Type: Application
    Filed: December 13, 2017
    Publication date: September 9, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Duk Hun JANG, Byung Guk KIM, Young Sik EOM, Sung Yeol CHOI, Sang Gon KIM, Jin Sook RYU, Sun Ok OH, Hyung Sam CHOI
  • Patent number: 11098160
    Abstract: The present disclosure relates to a polyimide-based block copolymer and a polyimide-based film including the same. The polyimide-based block copolymer according to the present disclosure makes it possible to provide a polyimide-based film having a large molecular weight and exhibiting colorless and transparent properties.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: August 24, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Sung Yeol Choi, Byung Guk Kim, Sang Gon Kim, Duk Hun Jang, Hyung Sam Choi
  • Publication number: 20210189068
    Abstract: The polyamide-imide copolymer according to the present disclosure makes it possible to provide a polyamide-imide film that is excellent in both thermal stability and mechanical properties, and is capable of realizing anisotropy.
    Type: Application
    Filed: October 15, 2018
    Publication date: June 24, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Yunah YU, Hyung Sam CHOI, Byung Guk KIM, Young Sik EOM, Sung Yeol CHOI, Sang Gon KIM, Duk Hun JANG
  • Patent number: 10800882
    Abstract: The present disclosure relates to a polyimide-based block copolymer and a polyimide-based film including the same. The polyimide-based block copolymer according to the present disclosure makes it possible to provide a polyimide-based film exhibiting excellent mechanical properties while having a high molecular weight, and being colorless and transparent.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: October 13, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Sang Gon Kim, Sung Yeol Choi, Duk Hun Jang, Hyung Sam Choi
  • Publication number: 20200239634
    Abstract: The present disclosure relates to a polyimide-based block copolymer and a polyimide-based film including the same. The polyimide-based block copolymer according to the present disclosure makes it possible to provide a polyimide-based film having a large molecular weight and exhibiting colorless and transparent properties.
    Type: Application
    Filed: October 12, 2017
    Publication date: July 30, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Sung Yeol CHOI, Byung Guk KIM, Sang Gon KIM, Duk Hun JANG, Hyung Sam CHOI
  • Patent number: 10717819
    Abstract: The present disclosure relates to a polyimide-based block copolymer film. The polyimide-based block copolymer film according to the present disclosure exhibits excellent an ultraviolet shielding property to be suitably used for substrates for displays, protective films for displays, touch panels, and the like.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: July 21, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Duk Hun Jang, Byung Guk Kim, Young Sik Eom, Sung Yeol Choi, Sang Gon Kim, Hyung Sam Choi
  • Patent number: 10689489
    Abstract: The present disclosure relates to a polyimide-based block copolymer and a polyimide-based film including the same. The polyimide-based block copolymer according to the present disclosure makes it possible to provide a polyimide-based film exhibiting excellent mechanical properties while being colorless and transparent. The polyimide-based film may be used as a cover film of various flexible or foldable devices.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: June 23, 2020
    Assignee: LG CHEM LTD.
    Inventors: Sung Yeol Choi, Byung Guk Kim, Sang Gon Kim, Duk Hun Jang, Hyung Sam Choi
  • Publication number: 20190315925
    Abstract: The present disclosure relates to a polyimide-based copolymer and a polyimide-based film including the same. The polyimide-based copolymer according to the present disclosure can provide a polyimide-based film exhibiting low absorbency while having excellent heat resistance and mechanical properties.
    Type: Application
    Filed: July 2, 2018
    Publication date: October 17, 2019
    Inventors: Sung Yeol CHOI, Young Sik EOM, Sang Gon KIM, Hyung Sam CHOI
  • Publication number: 20190153159
    Abstract: The present disclosure relates to a polyimide-based block copolymer film. The polyimide-based block copolymer film according to the present disclosure exhibits excellent an ultraviolet shielding property to be suitably used for substrates for displays, protective films for displays, touch panels, and the like.
    Type: Application
    Filed: November 14, 2017
    Publication date: May 23, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Duk Hun JANG, Byung Guk KIM, Young Sik EOM, Sung Yeol CHOI, Sang Gon KIM, Hyung Sam CHOI
  • Publication number: 20190010291
    Abstract: The present disclosure relates to a polyimide-based block copolymer and a polyimide-based film including the same. The polyimide-based block copolymer according to the present disclosure makes it possible to provide a polyimide-based film exhibiting excellent mechanical properties while being colorless and transparent. The polyimide-based film may be used as a cover film of various flexible or foldable devices.
    Type: Application
    Filed: June 22, 2017
    Publication date: January 10, 2019
    Inventors: Sung Yeol CHOI, Byung Guk KIM, Sang Gon KIM, Duk Hun JANG, Hyung Sam CHOI
  • Publication number: 20180355110
    Abstract: The present disclosure relates to a polyimide-based block copolymer and a polyimide-based film including the same. The polyimide-based block copolymer according to the present disclosure makes it possible to provide a polyimide-based film exhibiting excellent mechanical properties while having a high molecular weight, and being colorless and transparent.
    Type: Application
    Filed: September 8, 2017
    Publication date: December 13, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Sang Gon KIM, Sung Yeol CHOI, Duk Hun JANG, Hyung Sam CHOI
  • Patent number: 9687792
    Abstract: Provided is an interfacial polymerization process for preparation of a highly permeable thin film composite membrane, which can be used for nanofiltration, forward osmosis, or reverse osmosis, particularly for use with brackish water or seawater. The process includes contacting a porous support membrane with an aqueous phase containing a polyamine to form a coated support membrane, and applying an organic phase containing a polyfunctional acid halide to the coated support membrane to interfacially polymerize the polyamine and the polyfunctional acid halide to form a discrimination layer of a thin film composite membrane, where the aqueous and/or organic phases include a flux-enhancing additive and a boron rejection-enhancing additive that includes a biguanide compound, dicarbonate compound, pentathiodicarbonate compound, or salts thereof. Also provided are the membranes prepared by the methods and reverse osmosis modules containing the membranes.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: June 27, 2017
    Assignees: LG CHEM, LTD., LG NANOH2O, INC.
    Inventors: Alberto Goenaga, Brett Anderson Holmberg, Andrew Ford, Amit Sankhe, Christopher Kurth, Robert Burk, Jin Kuk Lee, Jeff Koehler, Sung Yeol Choi, Youngsik Eom, Hyungsam Choi
  • Publication number: 20170056837
    Abstract: Provided is an interfacial polymerization process for preparation of a highly permeable thin film composite membrane, which can be used for nanofiltration, forward osmosis, or reverse osmosis, particularly for use with brackish water or seawater. The process includes contacting a porous support membrane with an aqueous phase containing a polyamine to form a coated support membrane, and applying an organic phase containing a polyfunctional acid halide to the coated support membrane to interfacially polymerize the polyamine and the polyfunctional acid halide to form a discrimination layer of a thin film composite membrane, where the aqueous and/or organic phases include a flux-enhancing additive and a boron rejection-enhancing additive that includes a biguanide compound, dicarbonate compound, pentathiodicarbonate compound, or salts thereof. Also provided are the membranes prepared by the methods and reverse osmosis modules containing the membranes.
    Type: Application
    Filed: August 31, 2015
    Publication date: March 2, 2017
    Inventors: Alberto GOENAGA, Brett ANDERSON HOLMBERG, Andrew FORD, Amit SANKHE, Christopher KURTH, Robert BURK, Jin Kuk LEE, Jeff KOEHLER, Sung Yeol CHOI, Youngsik EOM, Hyungsam CHOI