Patents by Inventor Han-Kook OH

Han-Kook OH 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 element comprising same
    Patent number: 11678576
    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: June 13, 2023
    Assignee: 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 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 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 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
  • HETEROCYCLIC COMPOUND, ORGANIC LIGHT EMITTING DEVICE COMPRISING SAME, COMPOSITION FOR ORGANIC LAYER OF ORGANIC LIGHT EMITTING DEVICE, AND METHOD FOR MANUFACTURING ORGANIC LIGHT EMITTING DEVICE
    Publication number: 20220259187
    Abstract: The present specification provides a heterocyclic compound represented by Chemical Formula 1, an organic light emitting device comprising the same, a composition for an organic material layer of an organic light emitting device, and a method for manufacturing an organic light emitting device.
    Type: Application
    Filed: November 17, 2020
    Publication date: August 18, 2022
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Young-Jin LEE, Jun-Tae MO, Dong-Jun KIM, Han-Kook OH, Ji-Yoon BYUN
  • Heterocyclic compound and organic light emitting element comprising same
    Patent number: 11362282
    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: June 14, 2022
    Assignee: 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 DIODE COMPRISING SAME
    Publication number: 20220109111
    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: April 7, 2022
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Han-Kook OH, Ji-Young KIM, Won-Jang JEONG
  • 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 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
    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
  • Hetero-cyclic compound and organic light emitting device using the same
    Patent number: 10381577
    Abstract: The present application provides a hetero-cyclic compound which may significantly improve the lifetime, 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: July 27, 2016
    Date of Patent: August 13, 2019
    Assignee: HEESUNG MATERIAL LTD.
    Inventors: Geon-Yu Park, Han-Kook Oh, Yun-Ji Lee, Jae-Yeol Ma, Dong-Jun Kim, Jin-Seok Choi, Dae-Hyuk Choi, Joo-Dong Lee
  • HETEROCYCLIC COMPOUND, AND ORGANIC LIGHT-EMITTING DEVICE USING SAME
    Publication number: 20190233398
    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: August 1, 2019
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Han-Kook OH, 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: 20180287072
    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: Application
    Filed: June 7, 2018
    Publication date: October 4, 2018
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Geon-yu PARK, Han-Kook OH, Yun-Ji LEE, Dong-Jun KIM, Jin-Seok CHOI
  • HETERO-CYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME
    Publication number: 20170213988
    Abstract: The present application provides a hetero-cyclic compound which may significantly improve the lifetime, 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: Application
    Filed: July 27, 2016
    Publication date: July 27, 2017
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Geon-Yu PARK, Han-Kook OH, Yun-Ji LEE, Jae-Yeol MA, Dong-Jun KIM, Jin-Seok CHOI, Dae-Hyuk CHOI, Joo-Dong LEE