Patents by Inventor Tu Xuan Duong

Tu Xuan Duong 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).

  • Methods of producing a terminally sterilized topical patch preparation
    Publication number: 20040142022
    Abstract: Methods of producing a terminally sterilized topical patch preparation are provided. In the subject methods, a topical patch preparation is exposed to electron beam radiation, preferably low level electron beam radiation, for a period of time sufficient to terminally sterilize the topical patch preparation. Also provided are the terminally sterilized topical patch preparations produced by the subject methods and methods of using the same.
    Type: Application
    Filed: December 10, 2003
    Publication date: July 22, 2004
    Inventors: Jutaro Shudo, Larry Caldwell, Tu Xuan Duong
  • Methods of producing a terminally sterilized topical patch preparation
    Patent number: 6698162
    Abstract: Methods of producing a terminally sterilized topical patch preparation are provided. In the subject methods, a topical patch preparation is exposed to electron beam radiation, preferably low level electron beam radiation, for a period of time sufficient to terminally sterilize the topical patch preparation. Also provided are the terminally sterilized topical patch preparations produced by the subject methods and methods of using the same.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: March 2, 2004
    Assignee: Teikoku Pharma USA, Inc.
    Inventors: Jutaro Shudo, Larry Caldwell, Tu Xuan Duong