Patents by Inventor So-Yeon Choi, legal representative

So-Yeon Choi, legal representative 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).

  • Tetraphenylnaphalene derivatives and organic light emitting diode using the same
    Patent number: 8329316
    Abstract: The present invention provides a novel tetraphenylnaphthalene derivative, and an organic light emitting device using the same.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: December 11, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Yeon-Hwan Kim, Dong-Hoon Lee, Hye-Young Jang, Sung-Kil Hong, Sung-Jin Yeo, Kong-Kyeom Kim, Dong-Seob Jeong, So-Yeon Choi, legal representative
  • Emitting material and organic light emitting diode using the same
    Patent number: 8197951
    Abstract: The present invention provides novel structure of light emitting material and an organic light emitting diode using the same. The light emitting material can serve as a light emitting material alone, and can also serve as a light emitting host in combination with a proper light emitting dopant, or a light emitting dopant in combination with a proper light emitting host, particularly in an organic emitting diode.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: June 12, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Kong Kyeom Kim, Hye Young Jang, Sung Kil Hong, Sung Jin Yeo, So-Yeon Choi, legal representative, Sang Young Jeon
  • Emitting materials and organic light emitting device using the same
    Patent number: 7919196
    Abstract: The present invention provides a novel light emitting material and an organic light emitting device using the same.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: April 5, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Kong-Kyeom Kim, Sung-Jin Yeo, So-Yeon Choi, legal representative, Hye-Young Jang