Patents by Inventor Chan Hyo Lee

Chan Hyo 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).

  • POLYIMIDE-BASED POLYMER FILM, SUBSTRATE FOR DISPLAY DEVICE, AND OPTICAL DEVICE USING THE SAME
    Publication number: 20240092974
    Abstract: The present disclosure relates to a polyimide-based resin film comprising a polyimide-based resin containing a polyimide repeating unit represented by Chemical Formula 1 and a polyimide repeating unit represented by Chemical Formula 2, a substrate for display device, and an optical device using the same.
    Type: Application
    Filed: September 14, 2022
    Publication date: March 21, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Mi Eun KANG, Chan Hyo PARK, Jinyoung PARK, Chae Won PARK, Min Wook LEE
  • Blue light-emitting compound for organic electroluminescent device and organic electroluminescent device using the same
    Patent number: 6991858
    Abstract: The present invention relates to a blue light-emitting compound for organic polymer EL devices and organic EL devices having superior color purity and light-emitting efficiency by providing a blue light-emitting compound for organic EL devices represented by Chemical Formula 1 and an organic EL device using the blue light-emitting compound: wherein R1 to R8 each independently represents a functional group selected from the group consisting of hydrogen alkyl groups, alkoxy groups, carbon rings, aryl groups, hetero rings and fused aromatic compounds having from 1 to 30 carbon atoms; to of R1 to R3 may additionally be connected by a ring; and two of R4 to R8 may additionally be connected by a ring.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: January 31, 2006
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kwan Hee Lee, Soo Jin Park, Jong In Hong, Kyung Sun Choi, Chan Hyo Lee, Dae Yup Shin, Dong Hyun Jung, Sang Hyun Ju, Jang Hyuk Kwon
  • Blue light-emitting compound for organic electroluminescent device and organic electroluminescent device using the same
    Publication number: 20040001971
    Abstract: The present invention relates to a blue light-emitting compound for organic polymer EL devices and organic EL devices having superior color purity and light-emitting efficiency by providing a blue light-emitting compound for organic EL devices represented by Chemical Formula 1 and an organic EL device using the blue light-emitting compound: 1
    Type: Application
    Filed: February 4, 2003
    Publication date: January 1, 2004
    Inventors: Kwan Hee Lee, Soo Jin Park, Jong In Hong, Kyung Sun Choi, Chan Hyo Lee, Dae Yup Shin, Dong Hyun Jung, Sang Hyun Ju, Jang Hyuk Kwon