Patents by Inventor Won-jang Jeong

Won-jang Jeong 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).

  • Heterocyclic compound and organic light emitting device using same
    Patent number: 11665961
    Abstract: The present specification relates to a hetero-cyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: May 30, 2023
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Hyun-Ju La, Yu-Jin Heo, Won-Jang Jeong, Jin-Seok Choi, Dae-Hyuk Choi, Joo-Dong Lee
  • HETERO-CYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING SAME
    Publication number: 20230130126
    Abstract: Disclosed are a heterocyclic compound which may significantly improve a service life, efficiency, electrochemical stability, and thermal stability of an organic light emitting device, and an organic light emitting device in which the heterocyclic compound is contained in an organic material layer.
    Type: Application
    Filed: August 18, 2022
    Publication date: April 27, 2023
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Su-Yeon KIM, Na-Yeong KIM, Hyo-Kyun HAM, Won-Jang JEONG, Dong-Jun KIM
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING SAME
    Publication number: 20230127942
    Abstract: Disclosed are a heterocyclic compound which may significantly improve a service life, efficiency, electrochemical stability, and thermal stability of an organic light emitting device, and an organic light emitting device in which the heterocyclic compound is contained in an organic material layer.
    Type: Application
    Filed: August 18, 2022
    Publication date: April 27, 2023
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Ji-Un KIM, Nam-Jin LEE, Won-Jang JEONG, Dong-Jun KIM
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME
    Publication number: 20230131749
    Abstract: The present specification provides a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device including the same.
    Type: Application
    Filed: April 2, 2021
    Publication date: April 27, 2023
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Won-Jang JEONG, Nam-Jin LEE, Hyun-Ju LA, Dong-Jun KIM
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME
    Publication number: 20230056059
    Abstract: The present application provides a heterocyclic compound capable of significantly enhancing lifetime, efficiency, electrochemical stability and thermal stability of an organic light emitting device, and an organic light emitting device comprising the heterocyclic compound in an organic material layer.
    Type: Application
    Filed: December 9, 2020
    Publication date: February 23, 2023
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Gi-Back LEE, Hyun-Ju LA, Won-Jang JEONG, Dong-Jun KIM
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME
    Publication number: 20230051481
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Application
    Filed: November 27, 2020
    Publication date: February 16, 2023
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Gi-Back LEE, Ji-Un KIM, Won-Jang JEONG, Dong-Jun KIM
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME
    Publication number: 20230023238
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device including the same.
    Type: Application
    Filed: November 27, 2020
    Publication date: January 26, 2023
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Gi-Back LEE, Nam-Jin LEE, Won-Jang JEONG, Dong-Jun KIM
  • Heterocyclic compound and organic light-emitting device comprising same
    Patent number: 11563185
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: January 24, 2023
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Nam-Jin Lee, Min-Ji Park, Won-Jang Jeong, Jin-Seok Choi, Dae-Hyuk Choi, Joo-Dong Lee
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DIODE COMPRISING SAME
    Publication number: 20230013934
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Application
    Filed: November 8, 2019
    Publication date: January 19, 2023
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Ji-Young KIM, Han-Kook OH, Won-Jang JEONG
  • Heterocyclic compound and organic light-emitting element using same
    Patent number: 11552255
    Abstract: The present application relates to a hetero-cyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: January 10, 2023
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Hyun-Ju La, Yu-Jin Heo, Won-Jang Jeong, Jin-Seok Choi, Dae-Hyuk Choi, Joo-Dong Lee
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME
    Publication number: 20230002350
    Abstract: The present application provides a heterocyclic compound capable of significantly enhancing lifetime, efficiency, electrochemical stability and thermal stability of an organic light emitting device, and an organic light emitting device comprising the heterocyclic compound in an organic material layer.
    Type: Application
    Filed: November 16, 2020
    Publication date: January 5, 2023
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Gi-Back LEE, Seong-Jong PARK, Won-Jang JEONG, Dong-Jun KIM
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING SAME
    Publication number: 20220393108
    Abstract: The present application provides a heterocyclic compound capable of significantly enhancing lifetime, efficiency, electrochemical stability and thermal stability of an organic light emitting device, and an organic light emitting device including the heterocyclic compound in an organic material layer.
    Type: Application
    Filed: September 16, 2020
    Publication date: December 8, 2022
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Yu-Jin HEO, Nam-Jin LEE, Won-Jang JEONG, Dong-Jun KIM
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING SAME
    Publication number: 20220340585
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device including the same.
    Type: Application
    Filed: July 17, 2020
    Publication date: October 27, 2022
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Yun-Ji LEE, Min-Ji PARK, Won-Jang JEONG, Dong-Jun KIM
  • Heterocyclic compound and organic light-emitting device comprising same
    Patent number: 11472817
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: October 18, 2022
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Hyun-Ju La, Yu-Jin Heo, Won-Jang Jeong
  • Heterocyclic compound and organic light emitting element comprising same
    Patent number: 11476425
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: October 18, 2022
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Han-Kook Oh, Yun-Ji Lee, Hye-Su Ji, Won-Jang Jeong, Jin-Seok Choi, Dae-Hyuk Choi
  • HETEROCYCLIC COMPOUND, AND ORGANIC LIGHT-EMITTING ELEMENT USING SAME
    Publication number: 20220324877
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device using the same.
    Type: Application
    Filed: August 19, 2020
    Publication date: October 13, 2022
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Seong-Jong PARK, Hyun-Ju LA, Won-Jang JEONG, Dong-Jun KIM
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME
    Publication number: 20220289693
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Application
    Filed: October 20, 2020
    Publication date: September 15, 2022
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Gi-Back LEE, Yu-Jin HEO, Won-Jang JEONG
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME
    Publication number: 20220281884
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device including the same.
    Type: Application
    Filed: September 25, 2020
    Publication date: September 8, 2022
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Yun-Ji LEE, Min-Ji PARK, Won-Jang JEONG, Dong-Jun KIM
  • Heterocyclic compound and organic light emitting device comprising same
    Patent number: 11434228
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: September 6, 2022
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Gi-Back Lee, Seong-Jong Park, Ji-Young Kim, Won-Jang Jeong, Jin-Seok Choi, Dae-Hyuk Choi, Joo-Dong Lee
  • Heterocyclic compound, and organic light-emitting device using same
    Patent number: 11427562
    Abstract: The present application provides a hetero-cyclic compound capable of significantly enhancing lifespan, efficiency, electrochemical stability and thermal stability of an organic light emitting device, and an organic light emitting device containing the hetero-cyclic compound in an organic compound layer.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: August 30, 2022
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Han-Kook Oh, Jun-Tae Mo, Yong-Geun Jung, Won-Jang Jeong, Jin-Seok Choi, Dae-Hyuk Choi, Joo-Dong Lee