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).

  • Cleaning solution for removing photoresist
    Publication number: 20030130148
    Abstract: Cleaning solutions for removing photoresist resins and a method of forming patterns using the same are disclosed. The cleaning solution includes water (H2O) as main component, one or more surfactants as additive selected from the group consisting of polyoxyalkylene compounds, a salt of alcohol amine of Formula 1 and hydrocarbon compounds having carboxylic acid (—COOH) group, a salt of alcohol amine of Formula 1 and hydrocarbon compounds having sulfonic acid (—SO3H) group, polyethylene glycol compounds, compounds of Formula 3, compounds having a molecular weight ranging from 1000 to 10000 including repeating unit of Formula 4, polyether denatured silicon compounds and alcohol compounds.
    Type: Application
    Filed: December 12, 2002
    Publication date: July 10, 2003
    Inventors: Geun Su Lee, Jae Chang Jung, Ki Soo Shin, Keun Kyu Kong, Sung Koo Lee, Young Sun Hwang
  • Organic electroluminescent device
    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