Patents by Inventor Sung Jin Eum

Sung Jin Eum 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).

  • NOVEL HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME
    Publication number: 20240049594
    Abstract: The present invention relates to a novel heterocyclic compound and an organic light-emitting device comprising same. The heterocyclic compound according to the present invention is a polycyclic compound which has, as a core skeleton, a spiro structure in which a 9H-quinolino[3,2,1-kl]phenoxazine moiety and a 9H-fluorene moiety share a single carbon atom, and into which at least one amino substituent is introduced, and can be used as a material for an organic material layer of an organic light-emitting device.
    Type: Application
    Filed: December 9, 2021
    Publication date: February 8, 2024
    Inventors: Sung-Jin EUM, Sung Min KIM
  • NOVEL SPIROFLUORENE COMPOUND AND ORGANIC LIGHTEMITTING DEVICE INCLUDING SAME
    Publication number: 20240043371
    Abstract: The present invention relates to a novel spirofluorene compound and an organic light-emitting device including same. The spirofluorene compound according to the present invention is a polycyclic compound to which at least one amino substituent is introduced and which has a structure in which indene, indole, benzofuran, benzothiophene, or benzosilole is fused to a 9,9?-spirobifluorene moiety.
    Type: Application
    Filed: December 9, 2021
    Publication date: February 8, 2024
    Inventors: Sung-Jin EUM, Sung Min KIM
  • Nitrogen-containing polycyclic compound and organic light emitting element using same
    Patent number: 10672993
    Abstract: The present application relates to a polycyclic compound including nitrogen and an organic light emitting device including the same.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: June 2, 2020
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Young-Seok No, Kee-Yong Kim, Hyo-Kyun Ham, Jin-Seok Choi, Dae-Hyuk Choi, Sung-Jin Eum, Joo-Dong Lee
  • Heterocyclic compound and organic light emitting device using same
    Patent number: 10644244
    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: June 26, 2015
    Date of Patent: May 5, 2020
    Assignee: LT MATERIALS CO., LTD.
    Inventors: Jung-Hyun Lee, Young-Seok No, Geon-Yu Park, Dong-Jun Kim, Kee-Yong Kim, Jin-Seok Choi, Dae-Hyuk Choi, Sung-Jin Eum, Joo-Dong Lee
  • Heterocyclic compound and organic light-emitting element using same
    Patent number: 10454043
    Abstract: The present specification relates to a novel hetero-cyclic compound and an organic light emitting device using the same.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: October 22, 2019
    Assignee: HEESUNG MATERIAL LTD.
    Inventors: Mi-Jin Kim, Kee-Yong Kim, Yang-Soo Ha, Jin-Seok Choi, Dae-Hyuk Choi, Sung-Jin Eum, Joo-Dong Lee
  • Heterocyclic compound and organic light emitting element using same
    Patent number: 10446765
    Abstract: The present specification relates to a novel hetero-cyclic compound, and an organic light emitting device using the same.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: October 15, 2019
    Assignee: HEESUNG MATERIAL LTD.
    Inventors: Jung-Hyun Lee, Su-Jin Jung, Sang-Kyu Kang, Kee-Yong Kim, Dong-Jun Kim, Jin-Seok Choi, Dae-Hyuk Choi, Sung-Jin Eum, Joo-Dong Lee
  • Heterocyclic compound and organic light emitting device using same
    Patent number: 10344030
    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: May 15, 2015
    Date of Patent: July 9, 2019
    Assignee: HEESUNG MATERIAL LTD.
    Inventors: Jung-Hyun Lee, Kee-Yong Kim, Yong-Hoon An, Jin-Seok Choi, Dae-Hyuk Choi, Sung-Jin Eum, Joo-Dong Lee
  • Nitrogen-containing polycyclic compound and organic light emitting element using same
    Patent number: 10177319
    Abstract: The present application relates to a polycyclic compound including nitrogen and an organic light emitting device including the same.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: January 8, 2019
    Assignee: HEESUNG MATERIAL LTD.
    Inventors: Young-Seok No, Kee-Yong Kim, Hyo-Kyun Ham, Jin-Seok Choi, Dae-Hyuk Choi, Sung-Jin Eum, Joo-Dong Lee
  • NITROGEN-CONTAINING POLYCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT USING SAME
    Publication number: 20180323380
    Abstract: The present application relates to a polycyclic compound including nitrogen and an organic light emitting device including the same.
    Type: Application
    Filed: July 13, 2018
    Publication date: November 8, 2018
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Young-Seok NO, Kee-Yong KIM, Hyo-Kyun HAM, Jin-Seok CHOI, Dae-Hyuk CHOI, Sung-Jin EUM, Joo-Dong LEE
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING ELEMENT USING SAME
    Publication number: 20170324046
    Abstract: The present specification relates to a novel hetero-cyclic compound and an organic light emitting device using the same.
    Type: Application
    Filed: October 30, 2015
    Publication date: November 9, 2017
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Mi-Jin KIM, Kee-Yong KIM, Yang-Soo HA, Jin-Seok CHOI, Dae-Hyuk CHOI, Sung-Jin EUM, Joo-Dong LEE
  • NITROGEN-CONTAINING POLYCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT USING SAME
    Publication number: 20170317295
    Abstract: The present application relates to a polycyclic compound including nitrogen and an organic light emitting device including the same.
    Type: Application
    Filed: October 29, 2015
    Publication date: November 2, 2017
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Young-Seok NO, Kee-Yong KIM, Hyo-Kyun HAM, Jin-Seok CHOI, Dae-Hyuk CHOI, Sung-Jin EUM, Joo-Dong LEE
  • Heterocyclic compound and organic light emitting device using same
    Patent number: 9728731
    Abstract: Disclosed are a heterocyclic compound and an organic light emitting device including the same.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: August 8, 2017
    Assignee: HEESUNG MATERIAL LTD.
    Inventors: Hyun-Ju La, Young-Seok No, Mi-Jin Kim, Kee-Yong Kim, Jin-Seok Choi, Dae-Hyuk Choi, Sung-Jin Eum, Joo-Dong Lee
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING SAME
    Publication number: 20170141325
    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 26, 2015
    Publication date: May 18, 2017
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Jung-Hyun LEE, Young-Seok NO, Geon-Yu PARK, Dong-Jun KIM, Kee-Yong KIM, Jin-Seok CHOI, Dae-Hyuk CHOI, Sung-Jin EUM, Joo-Dong LEE
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT USING SAME
    Publication number: 20170133602
    Abstract: The present specification relates to a novel hetero-cyclic compound, and an organic light emitting device using the same.
    Type: Application
    Filed: June 30, 2015
    Publication date: May 11, 2017
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Jung-Hyun LEE, Su-Jin JUNG, Sang-Kyu KANG, Kee-Yong KIM, Dong-Jun KIM, Jin-Seok CHOI, Dae-Hyuk CHOI, Sung-Jin EUM, Joo-Dong LEE
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING SAME
    Publication number: 20170107217
    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: May 15, 2015
    Publication date: April 20, 2017
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Jung-Hyun LEE, Kee-Yong KIM, Yong-Hoon AN, Jin-Seok CHOI, Dae-Hyuk CHOI, Sung-Jin EUM, Joo-Dong LEE
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING SAME
    Publication number: 20160380208
    Abstract: Disclosed are a heterocyclic compound and an organic light emitting device including the same.
    Type: Application
    Filed: December 26, 2014
    Publication date: December 29, 2016
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Hyun-Ju LA, Young-Seok NO, Mi-Jin KIM, Kee-Yong KIM, Jin-Seok CHOI, Dae-Hyuk CHOI, Sung-Jin EUM, Joo-Dong LEE
  • POLYCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME
    Publication number: 20160204357
    Abstract: Disclosed are a novel polycyclic compound and an organic light emitting device using the same.
    Type: Application
    Filed: June 29, 2015
    Publication date: July 14, 2016
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: So-Hyun JANG, Kee-Yong KIM, Jin-Seok CHOI, Dae-Hyuk CHOI, Sung-Jin EUM, Joo-Dong LEE
  • HYDROCARBON-BASED FUSED RING COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME
    Publication number: 20140197393
    Abstract: The present invention relates to a hydrocarbon-based fused ring compound and an organic light emitting device including the same.
    Type: Application
    Filed: December 20, 2013
    Publication date: July 17, 2014
    Applicant: HEESUNG MATERIAL LTD.
    Inventors: Jun-A LEE, Geon-Yu PARK, Jeong-Hoon YANG, Sung-Jin EUM, Joo-Dong LEE
  • NOVEL ORGANIC ELECTROLUMINESCENT COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
    Publication number: 20120217485
    Abstract: Provided are novel organic electroluminescent compounds and organic electroluminescent devices using the same. Since the organic electroluminescent compound exhibits good luminous efficiency and excellent life property compared to the existing material, it may be used to manufacture OLED devices having superior operation life and consuming less power due to improved power efficiency.
    Type: Application
    Filed: July 30, 2010
    Publication date: August 30, 2012
    Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
    Inventors: Hyo Jung Lee, Young Jun Cho, Sung Jin Eum, Hyuck Joo Kwon, Bong Ok Kim, Sung Min Kim, Seung Soo Yoon
  • Organic electroluminescent compounds and organic electroluminescent device using the same
    Patent number: 8153279
    Abstract: Provided are novel organic electroluminescent compounds, and organic electroluminescent devices and organic solar cells employing the same. Specifically, the organic electroluminescent compounds according to the invention are characterized in that they are represented by Chemical Formula (1): wherein, A, B, C and D independently represent CR5 or N, provided that A, B, C and D cannot represent CR5 all at the same time. Since the organic electroluminescent compounds according to the invention have good luminous efficiency and excellent color purity and life property of material, OLED's having very good operation life can be manufactured therefrom.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: April 10, 2012
    Assignee: Gracel Display Inc.
    Inventors: Sung Jin Eum, Young Jun Cho, Hyuck Joo Kwon, Bong Ok Kim, Sung Min Kim, Seung Soo Yoon