Patents by Inventor Pyong W. Park

Pyong W. 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 enteric-coated oral drugs containing acid-unstable compounds
    Patent number: 5399700
    Abstract: The present invention relates to a method for preparing enteric-coated oral drugs containing acid-unstable compound, in particular an enteric-coated oral drug prepared in the form of acid-stable dosage units as inclusion complex formed by reacting benzimidazole derivative, acid-unstable compound, with cyclodextrin in alkaline solution.
    Type: Grant
    Filed: December 29, 1992
    Date of Patent: March 21, 1995
    Assignee: Sunkyong Industries Co., Ltd.
    Inventors: Dong S. Min, Kee A. Um, Yong S. Kim, Pyong W. Park