Patents by Inventor Hak-Sun Jang

Hak-Sun Jang 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).

  • Method for preparing high-purity polyethyleneglycol aldehyde derivatives
    Patent number: 8349969
    Abstract: A method for preparing high-purity polyethyleneglycol-alkylenealdehydes and derivatives thereof is provided.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: January 8, 2013
    Assignees: ID Biochem, Inc., Hanmi Holdings Co., Ltd.
    Inventors: Pyeong-uk Park, Seong-Nyun Kim, Woo-Hyuk Choi, Hak-Sun Jang, Gwan-Sun Lee, Se-Chang Kwon
  • METHOD FOR PREPARING HIGH-PURITY POLYETHYLENEGLYCOL ALDEHYDE DERIVATIVES
    Publication number: 20110071262
    Abstract: A method for preparing high-purity polyethyleneglycol-alkylenealdehydes and derivatives thereof is provided.
    Type: Application
    Filed: May 19, 2009
    Publication date: March 24, 2011
    Applicants: ID BIOCHEM, INC., HANMI HOLDINGS CO., LTD.
    Inventors: Pyeong-uk Park, Seong-Nyun Kim, Woo-Hyuk Choi, Hak-Sun Jang, Gwan-Sun Lee, Se-Chang Kwon