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: 11239427
    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: February 1, 2022
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Gi-Back Lee, Han-Kook Oh, Yong-Geun Jung, Jun-Tae Mo, Won-Jang Jeong, Jin-Seok Choi, Dae-Hyuk Choi, Joo-Dong Lee
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING SAME
    Publication number: 20220024948
    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 18, 2019
    Publication date: January 27, 2022
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Nam-Jin LEE, Young-Jin LEE, Won-Jang JEONG
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DIODE COMPRISING SAME
    Publication number: 20220013729
    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 12, 2019
    Publication date: January 13, 2022
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Nam-Jin LEE, Young-Jin LEE, Won-Jang JEONG
  • Heterocyclic compound and organic light emitting element using same
    Patent number: 11133477
    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: July 11, 2017
    Date of Patent: September 28, 2021
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Yun-Ji Lee, Jun-Tae Mo, Yong-Geun Jung, Won-Jang Jeong, Jin-Seok Choi, Dae-Hyuk Choi, Joo-Dong Lee
  • Heterocyclic compound and organic light emitting element using same
    Patent number: 11081653
    Abstract: The present application provides a hetero-cyclic compound which may significantly improve the service life, efficiency, electrochemical stability, and thermal stability of an organic light emitting device, and an organic light emitting device in which the hetero-cyclic compound is contained in an organic compound layer.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: August 3, 2021
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Mi-Jin Kim, Won-Jang Jeong, Jin-Seok Choi
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT COMPRISING SAME
    Publication number: 20210234102
    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: September 28, 2018
    Publication date: July 29, 2021
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Hye-Su JI, Han-Kook OH, Yun-Ji LEE, Won-Jang JEONG, Jin-Seok CHOI, Dae-Hyuk CHOI
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT COMPRISING SAME
    Publication number: 20210226133
    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: September 28, 2018
    Publication date: July 22, 2021
    Applicant: 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 COMPRISING SAME
    Publication number: 20210202863
    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: September 28, 2018
    Publication date: July 1, 2021
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Yun-Ji LEE, Han-Kook OH, Hye-Su JI, Won-Jang JEONG, Jin-Seok CHOI, Dae-Hyuk CHOI
  • Heterocyclic compound and organic light emitting device using same
    Patent number: 10930857
    Abstract: The present application provides a hetero-cyclic compound which may significantly improve the service life, efficiency, electrochemical stability, and thermal stability of an organic light emitting device, and an organic light emitting device in which the hetero-cyclic compound is contained in an organic compound layer.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: February 23, 2021
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Jun-Tae Mo, Yong-Geun Jung, Won-Jang Jeong, Dae-Hyuk Choi, Joo-Dong Lee
  • HETERO-CYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME
    Publication number: 20200403157
    Abstract: The present application provides a hetero-cyclic 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 hetero-cyclic compound in an organic material layer.
    Type: Application
    Filed: June 23, 2020
    Publication date: December 24, 2020
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Ji-Un KIM, Yu-Jun JUNG, Nam-Jin LEE, Won-Jang JEONG, Jun-Tae MO
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME
    Publication number: 20200343452
    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: December 24, 2018
    Publication date: October 29, 2020
    Applicant: 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 ELEMENT COMPRISING SAME
    Publication number: 20200339513
    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: December 24, 2018
    Publication date: October 29, 2020
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Yu-Jin HEO, Hyun-Ju LA, Won-Jang JEONG, Jin-Seok CHOI, Dae-Hyuk CHOI, Joo-Dong LEE
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING SAME
    Publication number: 20200308150
    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 1, 2018
    Publication date: October 1, 2020
    Applicant: HEESUNG MATERIAL 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 COMPRISING SAME
    Publication number: 20200255452
    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: September 19, 2019
    Publication date: August 13, 2020
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Hyun-Ju LA, Yu-Jin HEO, Won-Jang JEONG
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING SAME
    Publication number: 20200243775
    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: Application
    Filed: October 18, 2018
    Publication date: July 30, 2020
    Applicant: HEESUNG MATERIAL 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: 20200131133
    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: December 26, 2018
    Publication date: April 30, 2020
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Hyun-Ju LA, Seong-Jong PARK, Won-Jang JEONG, Jin-Seok CHOI, Dae-Hyuk CHOI, Joo-Dong LEE
  • ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20200066996
    Abstract: The present application provides a hetero-cyclic compound capable of greatly enhancing a lifetime, 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: Application
    Filed: December 19, 2017
    Publication date: February 27, 2020
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Hyun Ju LA, Yun Ji LEE, Gi Back LEE, Won Jang JEONG, Jin Seok CHOI, Dae Hyuk CHOI
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING SAME
    Publication number: 20190319195
    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: Application
    Filed: July 6, 2017
    Publication date: October 17, 2019
    Applicant: Heesung Material Ltd.
    Inventors: Gi-Back LEE, Han-Kook OH, Yong-Geun JUNG, Jun-Tae MO, Won-Jang JEONG, Jin-Seok CHOI, Dae-Hyuk CHOI, Joo-Dong LEE
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT USING SAME
    Publication number: 20190312211
    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: Application
    Filed: July 11, 2017
    Publication date: October 10, 2019
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Yun-Ji LEE, Jun-Tae MO, Yong-Geun JUNG, Won-Jang JEONG, Jin-Seok CHOI, Dae-Hyuk CHOI, Joo-Dong LEE
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING ELEMENT USING SAME
    Publication number: 20190288218
    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: Application
    Filed: November 30, 2017
    Publication date: September 19, 2019
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Hyun-Ju LA, Yu-Jin HEO, Won-Jang JEONG, Jin-Seok CHOI, Dae-Hyuk CHOI, Joo-Dong LEE