Patents by Inventor Duk Hun JANG

Duk Hun JANG 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).

  • Compound, Non-Aqueous Electrolyte Solution Including the Same, and Lithium Secondary Battery
    Publication number: 20240109858
    Abstract: The present invention relates to a compound capable of lowering the flammability of a non-aqueous electrolyte when included in the non-aqueous electrolyte and improving the life properties of a battery by forming an electrode-electrolyte interface which is stable at high temperatures and low in resistance, and relates to a compound represented by Formula I descried herein, a non-aqueous electrolyte solution and a lithium secondary battery both including the compound, n, m, Ak, and X are described herein.
    Type: Application
    Filed: March 23, 2022
    Publication date: April 4, 2024
    Applicants: LG Chem, Ltd., LG Energy Solution, Ltd.
    Inventors: Jung Keun Kim, Su Jeong Kim, Mi Sook Lee, Won Kyun Lee, Duk Hun Jang, Jeong Ae Yoon, Kyoung Hoon Kim, Chul Haeng Lee, Mi Yeon Oh, Kil Sun Lee, Jung Min Lee, Esder Kang, Chan Woo Noh, Chul Eun Yeom
  • Non-Aqueous Electrolyte Solution Additive for Lithium Secondary Battery, and Non-Aqueous Electrolyte Solution for Lithium Secondary Battery and Lithium Secondary Battery Which Include the Same
    Publication number: 20240014443
    Abstract: The present invention relates to a compound having a cyclic sulfur oxide structure, and a non-aqueous electrolyte solution additive, a non-aqueous electrolyte solution, and a lithium secondary battery which include the same, wherein the lithium secondary battery of the present invention may achieve improved effects in terms of high-temperature stability and gas generation while being able to achieve stable performance for a long time.
    Type: Application
    Filed: March 28, 2022
    Publication date: January 11, 2024
    Applicants: LG Chem, Ltd., LG Energy Solution, Ltd.
    Inventors: Su Jeong Kim, Jeong Ae Yoon, Jung Min Lee, Mi Sook Lee, Won Kyun Lee, Duk Hun Jang, Chan Woo Noh, Chul Eun Yeom, Kyoung Hoon Kim, Chul Haeng Lee
  • Non-Aqueous Electrolyte Solution Additive, Non-Aqueous Electrolyte Solution Including the Same, and Lithium Secondary Battery
    Publication number: 20230299348
    Abstract: The present invention relates to a non-aqueous electrolyte solution additive capable of improving lifespan characteristics of a lithium secondary battery by forming a solid-electrolyte interphase that is stable even at a high temperature and has low resistance when applied to a non-aqueous electrolyte solution, and relates to a non-aqueous electrolyte solution additive including a sultone-based compound represented by Formula I, a non-aqueous electrolyte solution including the same, and a lithium secondary battery.
    Type: Application
    Filed: September 15, 2021
    Publication date: September 21, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Jung Keun Kim, Young Min Lim, Won Kyun Lee, Duk Hun Jang, Chan Woo Noh, Chul Eun Yeom, Jeong Ae Yoon, Kyoung Hoon Kim, Chul Haeng Lee, Shul Kee Kim, Young Cheol Choi
  • Polyamide-imide resin film
    Patent number: 11518853
    Abstract: There is provided a polyamide-imide resin film including a polyamide-imide block copolymer having a specific structure and having a predetermined retardation.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: December 6, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Yunah Yu, Hyungsam Choi, Byungguk Kim, Youngsik Eom, Sungyeol Choi, Sanggon Kim, Duk Hun Jang
  • Polyamide-imide copolymer and polyamide-imide film comprising the same
    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
  • Polyimide-based block copolymer and polyimide-based film comprising the same
    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
  • POLYIMIDE-BASED BLOCK COPOLYMER AND POLYIMIDE-BASED FILM COMPRISING THE SAME
    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
  • Polyimide-based block copolymers and polyimide-based film comprising the same
    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
  • COVER WINDOW FOR FLEXIBLE DISPLAY DEVICE AND FLEXIBLE DISPLAY DEVICE
    Publication number: 20210240226
    Abstract: The present disclosure relates to a cover window for a flexible display device and a flexible display device including the cover window, wherein the cover window includes a polymer substrate including a polyamideimide block copolymer; and a hard coating layer formed on at least one surface of the polymer substrate and having a pencil hardness of 5H or more under a load of 750 g, and no crack occurs when wound on a mandrel having a diameter of 3 mm.
    Type: Application
    Filed: October 25, 2019
    Publication date: August 5, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Jin Young PARK, Yunah YU, Duk Hun JANG, Yongjoon HEO, Yeongrae CHANG
  • POLYAMIDE-IMIDE COPOLYMER AND POLYAMIDE-IMIDE FILM COMPRISING THE SAME
    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
  • Polyimide-based block copolymers and polyimide-based film comprising the same
    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
  • POLYIMIDE-BASED BLOCK COPOLYMERS AND POLYIMIDE-BASED FILM COMPRISING THE SAME
    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
  • Polyimide-based block copolymer film
    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
  • Polyimide-based block copolymer and polyimide-based film comprising the same
    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
  • POLYAMIDE-IMIDE RESIN FILM
    Publication number: 20200157283
    Abstract: There is provided a polyamide-imide resin film including a polyamide-imide block copolymer having a specific structure and having a predetermined retardation.
    Type: Application
    Filed: December 7, 2018
    Publication date: May 21, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Yunah YU, Hyungsam CHOI, Byungguk KIM, Youngsik EOM, Sungyeol CHOI, Sanggon KIM, Duk Hun JANG
  • Sulfide-based polymer, film comprising same and method for preparing same
    Patent number: 10428182
    Abstract: The present disclosure provides a sulfide-based polymer, a film comprising the same, and a method for preparing the same.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: October 1, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Sanggon Kim, Hyungsam Choi, Duk Hun Jang
  • POLYIMIDE-BASED BLOCK COPOLYMER FILM
    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
  • SULFIDE-BASED POLYMER, FILM COMPRISING SAME AND METHOD FOR PREPARING SAME
    Publication number: 20190077918
    Abstract: The present disclosure provides a sulfide-based polymer, a film comprising the same, and a method for preparing the same.
    Type: Application
    Filed: July 7, 2017
    Publication date: March 14, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Sanggon KIM, Hyungsam CHOI, Duk Hun JANG
  • POLYIMIDE-BASED BLOCK COPOLYMER AND POLYIMIDE-BASED FILM COMPRISING THE SAME
    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
  • POLYIMIDE-BASED BLOCK COPOLYMERS AND POLYIMIDE-BASED FILM COMPRISING THE SAME
    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