Patents by Inventor Ju Hyon CHA

Ju Hyon CHA 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: 11527723
    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: March 26, 2018
    Date of Patent: December 13, 2022
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Young Seok No, Ju Hyon Cha, Dongjun Kim
  • Heterocyclic compound and organic light emitting element comprising same
    Patent number: 11515484
    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 17, 2018
    Date of Patent: November 29, 2022
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Geon-Yu Park, Young-Seok No, Seung-Gyu Yang, Ju-Hyon Cha, Dong-Jun Kim, Dae-Hyuk Choi, Joo-Dong Lee
  • Organic light emitting element and composition for organic material layer in organic light emitting element
    Patent number: 11515487
    Abstract: The present specification relates to an organic light emitting device comprising a first electrode, a second electrode, and one or more organic material layers provided between the first electrode and the second electrode, wherein one or more layers of the organic material layers comprise a heterocyclic compound represented by Chemical Formula 1 and a heterocyclic compound represented by Chemical Formula 2 at the same time, and a composition for an organic material layer of an organic light emitting device.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: November 29, 2022
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Young Seok No, Ju Hyon Cha, Dongjun Kim
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT COMPRISING SAME
    Publication number: 20200266355
    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 17, 2018
    Publication date: August 20, 2020
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Geon-Yu PARK, Young-Seok NO, Seung-Gyu YANG, Ju-Hyon CHA, Dong-Jun KIM, Dae-Hyuk CHOI, Joo-Dong LEE
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT COMPRISING SAME
    Publication number: 20200123133
    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: March 26, 2018
    Publication date: April 23, 2020
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Young Seok NO, Ju Hyon CHA, Dongjun KIM
  • ORGANIC LIGHT EMITTING ELEMENT AND COMPOSITION FOR ORGANIC MATERIAL LAYER IN ORGANIC LIGHT EMITTING ELEMENT
    Publication number: 20200111969
    Abstract: The present specification relates to an organic light emitting device comprising a first electrode, a second electrode, and one or more organic material layers provided between the first electrode and the second electrode, wherein one or more layers of the organic material layers comprise a heterocyclic compound represented by Chemical Formula 1 and a heterocyclic compound represented by Chemical Formula 2 at the same time, and a composition for an organic material layer of an organic light emitting device.
    Type: Application
    Filed: March 26, 2018
    Publication date: April 9, 2020
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Young Seok NO, Ju Hyon CHA, Dongjun KIM