Patents by Inventor Yea-Sheng Yang

Yea-Sheng Yang 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).

  • Process for preparing oral sustained-release formulation of felodipine
    Patent number: 6726931
    Abstract: The present invention relates to a process for producing an oral sustained-release pharmaceutical composition of felodipine. The process includes mixing together felodipine with at least an ionic surfactant or hydrophilic polymer, and at least a release-controlling excipient. The pharmaceutical composition of felodipine produced by the process of the present invention possesses the enhanced dissolution rate of the insoluble drug of felodipine, whereas the sustained releasing profile and superior bioavailability of the produced pharmaceutical composition of felodipine are retained.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: April 27, 2004
    Assignee: Standard Chem. & Pharm. Co., Ltd.
    Inventors: Yea-Sheng Yang, Ya-Ching Changchien
  • Process for preparing oral sustained-release formulation of felodipine
    Publication number: 20030190356
    Abstract: The present invention relates to a process for producing an oral sustained-release pharmaceutical composition of felodipine. The process includes mixing together felodipine with at least an ionic surfactant or hydrophilic polymer, and at least a release-controlling excipient. The pharmaceutical composition of felodipine produced by the process of the present invention possesses the enhanced dissolution rate of the insoluble drug of felodipine, whereas the sustained releasing profile and superior bioavailability of the produced pharmaceutical composition of felodipine are retained.
    Type: Application
    Filed: April 8, 2002
    Publication date: October 9, 2003
    Inventors: Yea-Sheng Yang, Ya-Ching Changchien