Patents by Inventor U-Hun Song

U-Hun Song 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).

  • Oral sustained-release triple layer tablet
    Patent number: 10646447
    Abstract: The present invention relates to an oral sustained-release triple layer tablet, more particularly, a triple layer tablet consisting of an inner immediate-release layer containing a pharmaceutically active ingredient and two outer layers containing swellable polymers. Upon exposure to aqueous media, the two outer layers swell to form gelled layers surrounding the lateral side of the inner layer rapidly, thereby control effectively the release of the pharmaceutically active ingredient from the inner immediate-release layer.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: May 12, 2020
    Assignee: GL PHARMTECH CORP.
    Inventors: Jun Sang Park, U-Hun Song, Ji-Yeon Sim
  • Oral Sustained-Release Triple Layer Tablet
    Publication number: 20100040681
    Abstract: The present invention relates to an oral sustained-release triple layer tablet, more particularly, a triple layer tablet consisting of an inner immediate-release layer containing a pharmaceutically active ingredient and two outer layers containing swellable polymers. Upon exposure to aqueous media, the two outer layers swell to form gelled layers surrounding the lateral side of the inner layer rapidly, thereby control effectively the release of the pharmaceutically active ingredient from the inner immediate-release layer.
    Type: Application
    Filed: February 11, 2008
    Publication date: February 18, 2010
    Applicant: GL PHARMTECH CORP.
    Inventors: Jun Sang Park, U-Hun Song, Ji-Yeon Sim