Patents by Inventor Young Sei Park

Young Sei Park 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).

  • Composition for skin whitening containing lysophosphatidylethanolamine as an active ingredient
    Publication number: 20050123492
    Abstract: Lysophosphatidylethanolamine has skin whitening ability and thus a composition containing lysophosphatidylethanolamine as an active ingredient can be used to relieve hyperpigmentation or discoloration. The composition containing lysophosphatidylethanolamine can also induce moisturizing effect on skin, is very safe, and very stable.
    Type: Application
    Filed: January 29, 2003
    Publication date: June 9, 2005
    Applicant: Doosan Corporation
    Inventors: Guk Hoon Chung, Young Sei Park, Wang Keun Choi, Chang Seo Park
  • Fluorene based polymers and light emitting diodes fabricated with the same as light emitting material
    Patent number: 6835468
    Abstract: A fluorene-based polymer of the following Formula (I) and electroluminescent devices using the same. wherein, R1, R2, R3 and R4 are same or different and represent hydrogen, aliphatic or alicyclic alkyl or alkoxy groups containing 1 to 22 carbon atoms, aryl or aryloxy group containing 6 to 18 carbon atoms, cyano, cyanoethyl, or an alkyl or aryl derivative of silicon, tin or germanium; X represents diacetylene, diethynyl aryl, divinylaryl group or a single bond; and n is an integer equal to or greater than 1.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: December 28, 2004
    Assignees: Korea Institute of Science and Technology (KIST), Hanwha Chemical Corporation
    Inventors: Hyun Nam Cho, Young Chul Kim, Jae-Min Hong, Jong-Bok Kim, Doo Kyung Moon, Young Sei Park, Ho Seong Nam
  • Fluorene based polymers and light emitting diodes fabricated with the same as light emitting material
    Publication number: 20020051895
    Abstract: A fluorene-based polymer of the following Formula (I) and electroluminescent devices using the same.
    Type: Application
    Filed: September 4, 2001
    Publication date: May 2, 2002
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY (KIST)
    Inventors: Hyun Nam Cho, Young Chul Kim, Jae-Min Hong, Jong-Bok Kim, Doo Kyung Moon, Young Sei Park, Ho Seong Nam