Patents by Inventor Wei-Ja Wang

Wei-Ja Wang 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).

  • Antitussive agent and method for making the same
    Patent number: 7569238
    Abstract: An antitussive agent. A composition for relieving, preventing and/or treating cough includes a sufficient amount of Cynanchi Atrati Radix extract as an active component. The effective Cynanchi Atrati Radix extract is prepared by extracting Cynanchi Atrati Radix with water, ethanol, hexane, ethyl acetate or a combination thereof. The crude extract can be further fractioned by ultrafiltration or reverse phase column.
    Type: Grant
    Filed: April 28, 2003
    Date of Patent: August 4, 2009
    Assignee: Pharmaceutical Industry Technology and Development Center
    Inventors: Feng-Nien Ko, Wei-Ja Wang, Cheng-Ko Liu, Pin-Fen Chen, Yu-Feng Han, Mai-Yu Lee
  • Antitussive agent and method for making the same
    Publication number: 20040213863
    Abstract: An antitussive agent. A composition for relieving, preventing and/or treating cough includes a sufficient amount of Cynanchi Atrati Radix extract as an active component. The effective Cynanchi Atrati Radix extract is prepared by extracting Cynanchi Atrati Radix with water, ethanol, hexane, ethyl acetate or a combination thereof. The crude extract can be further fractioned by ultrafiltration or reverse phase column.
    Type: Application
    Filed: April 28, 2003
    Publication date: October 28, 2004
    Inventors: Feng-Nien Ko, Wei-Ja Wang, Cheng-Ko Liu, Pin-Fen Chen, Yu-Feng Han, Mai-Yu Lee