Patents by Inventor Juwan Maeng

Juwan Maeng 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 electroluminescence device and compound for organic electroluminescence device
    Patent number: 11877512
    Abstract: An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and an emission layer between the first electrode and the second electrode, wherein the emission layer includes a compound represented by Formula 1, thereby showing excellent emission efficiency properties and long-life characteristics:
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: January 16, 2024
    Assignees: Samsung Display Co., Ltd., Lapto Co., Ltd.
    Inventors: SeulOng Kim, Eu Gene Oh, Hyein Jeong, Seung-Jin Chu, Munsoo Kim, Juwan Maeng, Kap Jong Han
  • Organic electroluminescence device and polycyclic compound for organic electroluminescence device
    Patent number: 11812659
    Abstract: An organic electroluminescence device of an embodiment includes a first electrode, a second electrode opposite the first electrode, and an emission layer between the first electrode and the second electrode, wherein the emission layer includes a polycyclic compound represented by Formula 1, thereby showing improved emission efficiency.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: November 7, 2023
    Assignees: Samsung Display Co., Ltd., Lapto Co., Ltd.
    Inventors: Seulong Kim, Eu-gene Oh, Munsoo Kim, JuWan Maeng, Kap-jong Han, Jaeweon Hur, Hyewon Choi, Kyungsik Kim, Sung-Soo Bae
  • Organic electroluminescence device and organometallic compound for organic electroluminescence device
    Patent number: 11569461
    Abstract: An organic electroluminescence device includes a first electrode, an organic layer disposed on the first electrode, and a second electrode disposed on the organic layer. The organic layer includes an organometallic compound represented by Formula 1 below. where R1 to R4, X1 to X4, Ar1 to Ar3, M, Q, m1 to m4, and n are as defined in the specification.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: January 31, 2023
    Assignees: Samsung Display Co., Ltd., Lapto Co., Ltd.
    Inventors: Sung-soo Bae, Hwanhee Cho, Eu-gene Oh, Hyein Jeong, Gyuri Kim, Kap-jong Han, Namho Kim, Hyejeong Kim, Juwan Maeng, Yongpil Park, Jeunghun Yoon
  • ORGANIC ELECTROLUMINESCENCE DEVICE AND COMPOUND FOR ORGANIC ELECTROLUMINESCENCE DEVICE
    Publication number: 20210098708
    Abstract: An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and an emission layer between the first electrode and the second electrode, wherein the emission layer includes a compound represented by Formula 1, thereby showing excellent emission efficiency properties and long-life characteristics:
    Type: Application
    Filed: September 22, 2020
    Publication date: April 1, 2021
    Inventors: SeulOng KIM, Eu Gene OH, Hyein JEONG, Seung-Jin CHU, Munsoo KIM, Juwan MAENG, Kap Jong HAN
  • LUMINESCENCE DEVICE AND POLYCYCLIC COMPOUND FOR LUMINESCENCE DEVICE
    Publication number: 20210098701
    Abstract: An organic luminescence device includes a polycyclic compound represented by Formula 1 in at least one functional layer between a first electrode and a second electrode, wherein in Formula 1, X is O, S, Se, CR4R5, SiR6R7, or and at least one selected from L1 and Ar1 is an electron withdrawing group having a Hammett constant greater than 0:
    Type: Application
    Filed: September 25, 2020
    Publication date: April 1, 2021
    Inventors: Dongchan LEE, Eu-gene OH, Munsoo KIM, JuWan MAENG, Kap-jong HAN, Sung-Soo BAE, Sungwook KIM, Tsuyoshi NAIJO, Hyein JEONG
  • ORGANIC ELECTROLUMINESCENCE DEVICE AND COMPOUND FOR ORGANIC ELECTROLUMINESCENCE DEVICE
    Publication number: 20210098711
    Abstract: An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and an emission layer between the first electrode and the second electrode, and the emission layer includes a compound represented by Formula 1 below, and thus the organic electroluminescence device may exhibit high luminous efficiency characteristics and improved service life characteristics.
    Type: Application
    Filed: September 16, 2020
    Publication date: April 1, 2021
    Inventors: Dongchan LEE, Eu-gene OH, SeulOng KIM, Yunjee PARK, Munsoo KIM, JuWan MAENG, Kap-jong HAN
  • ORGANIC ELECTROLUMINESCENCE DEVICE AND POLYCYCLIC COMPOUND FOR ORGANIC ELECTROLUMINESCENCE DEVICE
    Publication number: 20210098715
    Abstract: An organic electroluminescence device of an embodiment includes a first electrode, a second electrode opposite the first electrode, and an emission layer between the first electrode and the second electrode, wherein the emission layer includes a polycyclic compound represented by Formula 1, thereby showing improved emission efficiency.
    Type: Application
    Filed: September 22, 2020
    Publication date: April 1, 2021
    Inventors: Seulong KIM, Eu-gene OH, Munsoo KIM, JuWan MAENG, Kap-jong HAN, Jaeweon HUR, Hyewon CHOI, Kyungsik KIM, Sung-Soo BAE
  • ORGANIC ELECTROLUMINESCENCE DEVICE AND ORGANOMETALLIC COMPOUND FOR ORGANIC ELECTROLUMINESCENCE DEVICE
    Publication number: 20190181358
    Abstract: An organic electroluminescence device includes a first electrode, an organic layer disposed on the first electrode, and a second electrode disposed on the organic layer. The organic layer includes an organometallic compound represented by Formula 1 below. where R1 to R4, X1 to X4, Ar1 to Ar3, M, Q, m1 to m4, and n are as defined in the specification.
    Type: Application
    Filed: November 19, 2018
    Publication date: June 13, 2019
    Inventors: Sung-soo BAE, Hwanhee CHO, Eu-gene OH, Hyein JEONG, Gyuri KIM, Kap-jong HAN, Namho KIM, Hyejeong KIM, Juwan MAENG, Yongpil PARK, Jeunghun YOON
  • Enantiomerically pure binaphthol derivatives and method for preparing the same
    Patent number: 10059659
    Abstract: The present invention relates to compounds 1, 1a (S-enantiomer) and 1b (R-enantiomer) of the following formula 1, and a method for preparing the same. [formula 1] The novel compound of the formula 1 is used as an important intermediate for preparing compounds 6, 6a (S-enantiomer) and 6b (R-enantiomer) of the following formula 6, which are 2,2?-binaphthol-3-aldehyde derivatives. Also, the present invention provides a method for preparing the compound of formula 1 with a very safe method at low cost.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: August 28, 2018
    Assignee: AMINOLOGICS CO. LTD.
    Inventors: Rae Kyu Chang, Yun Soo Ahn, Heejung Jung, Hyerim Ga, Juwan Maeng, Young-Kook Koh, Young Hee Lee, Kwang Jae Lee, Joonseo Kim, Hyunil Lee, Heungsik Yoon
  • ENANTIOMERICALLY PURE BINAPHTHOL DERIVATIVES AND METHOD FOR PREPARING THE SAME
    Publication number: 20140012038
    Abstract: The present invention relates to compounds 1, 1a (S-enantiomer) and 1b (R-enantiomer) of the following formula 1, and a method for preparing the same. [formula 1] The novel compound of the formula 1 is used as an important intermediate for preparing compounds 6, 6a (S-enantiomer) and 6b (R-enantiomer) of the following formula 6, which are 2,2?-binaphthol-3-aldehyde derivatives. Also, the present invention provides a method for preparing the compound of formula 1 with a very safe method at low cost.
    Type: Application
    Filed: December 13, 2011
    Publication date: January 9, 2014
    Applicant: Aminologics Co., Ltd.
    Inventors: Rae Kyu Chang, Yun Soo Ahn, Heejung Jung, Hyerim Ga, Juwan Maeng, Young-Kook Koh, Young Hee Lee, Kwang Jae Lee, Joonseo Kim, Hyunil Lee