Patents by Inventor Sung Koo Lee

Sung Koo 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).

  • Publication number: 20030118866
    Abstract: Disclosed is an organic electroluminescent device including a first electrode, a second electrode, and a light-emitting layer having a guest material of a red luminescent material and at least two host materials so as to be formed between the first and second electrodes.
    Type: Application
    Filed: September 26, 2002
    Publication date: June 26, 2003
    Applicant: LG Electronics Inc.
    Inventors: Hyoung Yun Oh, Sung Koo Lee, Chun Gun Park, Jeong Dae Seo, Myung Seop Kim