Patents by Inventor Keon Hyoung Lee

Keon Hyoung 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).

  • Controlled drug delivery system using the conjugation of drug to biodegradable polyester
    Patent number: 7163698
    Abstract: The present invention relates to the molecular sustained controlled release system constructed by the conjugation of molecules to be released with biodegradable polyester polymer via covalent bond and method for preparation thereof. In accordance with the present invention, the system may be formulated into microspheres, nanoparticles, or films. The molecular release rate from the above system can be regulated to be proportional to the chemical degradation rate of the biodegradable polyester polymers, resulting in near zero order kinetics profile of release without showing a burst effect. Moreover, the high loading efficiency of hydrophilic drugs can be achieved.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: January 16, 2007
    Inventors: Jong Eun Oh, Keon Hyoung Lee, Tae Gwan Park, Yoon Sung Nam
  • Controlled drug delivery system using the conjugation of drug to biodegradable polyester
    Publication number: 20040013728
    Abstract: The present invention relates to the molecular sustained controlled release system constructed by the conjugation of molecules to be released with biodegradable polyester polymer via covalent bond and method for preparation thereof. In accordance with the present invention, the system may be formulated into microspheres, nanoparticles, or films. The molecular release rate from the above system can be regulated to be proportional to the chemical degradation rate of the biodegradable polyester polymers, resulting in near zero order kinetics profile of release without showing a burst effect. Moreover, the high loading efficiency of hydrophilic drugs can be achieved.
    Type: Application
    Filed: April 25, 2003
    Publication date: January 22, 2004
    Inventors: Jong Eun Oh, Keon Hyoung Lee, Tae Gwan Park, Yoon Sung Nam
  • Controlled drug delivery system using the conjugation of drug to biodegradable polyester
    Patent number: 6589548
    Abstract: The present invention relates to a molecular sustained controlled release system constructed by the conjugation of molecules to be released with biodegradable polyester polymer via covalent bond and method for preparation thereof. In accordance with the present invention, the system may be formulated into microspheres, nanoparticles, or films. The molecular release rate from the above system can be regulated to be proportional to the chemical degradation rate of the biodegradable polyester polymers, resulting in near zero order kinetics profile of release without showing a burst effect, Moreover, a high loading efficiency of hydrophilic drugs can be achieved.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: July 8, 2003
    Assignees: Mogam Biotechnology Research Institute, Korea Advanced Institute of Science and Technology
    Inventors: Jong Eun Oh, Keon Hyoung Lee, Tae Gwan Park, Yoon Sung Nam