Patents by Inventor Pyeong-Uk Park

Pyeong-Uk 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).

  • 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
  • Transdermal delivery matrix for piroxicam
    Patent number: 5916587
    Abstract: The present invention is directed to a pharmaceutical compositions improving percutaneous absorbability by absorption assistants, which remarkably increase permeation and dissolution of piroxicam, and penetration enhancers. A further surprising feature of the present invention resides in the fact that absorption assistant which assists penetration enhancer is able to include the active substance excessively in adhesive matrix as solvent of the active substance.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: June 29, 1999
    Assignee: Sunkyong Industries Co., Ltd.
    Inventors: Dong Son Min, Kee An Um, Yong Soo Kim, Pyeong Uk Park, Key Hyup Kim, Ho Seung Yang, Hey Soon Jeong, Mi Young Park
  • Ginkgolide derivatives
    Patent number: 5541183
    Abstract: The present invention is directed to new ginkgolide derivatives, which may be used for the prevention or treatment of various PAF-induced diseases, and the pharmaceutical uses of these derivatives. The present invention is also directed to a process for preparing these ginkgolide derivatives.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: July 30, 1996
    Assignee: Sunkyong Industries Co., Ltd.
    Inventors: Pyeong-Uk Park, Sungsoo Pyo, Suk-Kwan Lee, Jin H. Sung, Wie J. Kwak, Hwa-Kun Park, Yong-Baik Cho, Geun Ho Ryu, Taek S. Kim