Patents Assigned to ID Biochem, Inc.
  • 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
  • PREPARING METHOD OF METHOXYPOLYETHYLENEGLYCOL ETHYLMALEIMIDE
    Publication number: 20100311986
    Abstract: The present invention relates to a process for preparing methoxy polyethylene glycol ethylmaleimide (abbreviated to as “mPEG-ethylmaleimide”) and derivatives thereof with high purity. methoxypolyethyleneglycol ethylmaleimide therefrom.
    Type: Application
    Filed: March 18, 2008
    Publication date: December 9, 2010
    Applicant: ID BIOCHEM, INC.
    Inventors: Pyeong-Uk Park, Seong-Nyun Kim, Su-Chan Kim, Jung-Oh Kwon
  • Preparing method of methoxypolyethyleneglycol and its derivatives
    Patent number: 7781563
    Abstract: The present invention relates to a preparing method of methoxypolyethyleneglycol (mPEG) with high purity and derivatives thereof. More precisely, the method of the present invention to prepare high purity mPEG with at least 99% of purity, up to 1.05 of molecular weight distribution and 350˜100,000 of molecular weight includes the process of reacting commercial mPEG having low purity to give highly purified intermediates, mPEG-acetic acid of formula 1 and mPEG-phthalate of formula 2.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: August 24, 2010
    Assignee: ID Biochem, Inc.
    Inventors: Pyeong-Uk Park, Seong-Neon Kim, Chong-Gu Lee, Ju-Sung Lee
  • Preparing Method Of Methoxypolyethyleneglycol And Its Derivatives
    Publication number: 20080090991
    Abstract: The present invention relates to a preparing method of methoxypolyethyleneglycol (mPEG) with high purity and derivatives thereof. More precisely, the method of the present invention to prepare high purity mPEG with at least 99% of purity, up to 1.05 of molecular weight distribution and 350˜100,000 of molecular weight includes the process of reacting commercial mPEG having low purity to give highly purified intermediates, mPEG-acetic acid of formula 1 and mPEG-phthalate of formula 2.
    Type: Application
    Filed: August 3, 2006
    Publication date: April 17, 2008
    Applicant: ID BIOCHEM INC.
    Inventors: Pyeong-Uk Park, Seong-Neon Kim, Chong-Gu Lee, Ju-Sung Lee