Patents by Inventor Gi-Back LEE

Gi-Back LEE 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).

  • Organic light-emitting device
    Patent number: 11302873
    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: Grant
    Filed: December 19, 2017
    Date of Patent: April 12, 2022
    Assignee: LT MATERIALS CO, 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 element using same
    Patent number: 11248008
    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 24, 2017
    Date of Patent: February 15, 2022
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Won-Jang Jeong, Yun-Ji Lee, Gi-Back Lee, Jin-Seok Choi, Dae-Hyuk Choi, Joo-Dong Lee
  • 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: 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
  • 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: 20190263834
    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 24, 2017
    Publication date: August 29, 2019
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Won-Jang JEONG, Yun-Ji LEE, Gi-Back LEE, Jin-Seok CHOI, Dae-Hyuk CHOI, Joo-Dong LEE