Patents by Inventor Chieh-Wen CHANG

Chieh-Wen CHANG 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).

  • Sustained release oral dosage form containing dalfampridine
    Patent number: 10172842
    Abstract: The present invention provides a sustained release oral dosage form containing dalfampridine that can be administered once daily. The dosage form includes dalfampridine as the active pharmaceutical ingredient and the excipients comprising osmotic agents in a tablet core. The sustained release oral dosage form of the present invention can be administrated once daily and can provide a proper fluctuation index to reduce undesired adverse effect, prevent alcohol-induced dose dumping and release drug at a rate sufficient to maintain certain drug plasma concentration.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: January 8, 2019
    Assignee: PharmaDax Inc.
    Inventors: Chih-Yao Yang, Jen-Sen Wu, Shih-Wei Huang, Yi-Chen Tsai, Chieh-Wen Chang, Cheng-Wei Chang
  • SUSTAINED RELEASE ORAL DOSAGE FORM CONTAINING DALFAMPRIDINE
    Publication number: 20170071923
    Abstract: The present invention provides a sustained release oral dosage form containing dalfampridine that can be administered once daily. The dosage form includes dalfampridine as the active pharmaceutical ingredient and the excipients comprising osmotic agents in a tablet core. The sustained release oral dosage form of the present invention can be administrated once daily and can provide a proper fluctuation index to reduce undesired adverse effect, prevent alcohol-induced dose dumping and release drug at a rate sufficient to maintain certain drug plasma concentration.
    Type: Application
    Filed: September 5, 2016
    Publication date: March 16, 2017
    Inventors: Chih-Yao YANG, Jen-Sen WU, Shih-Wei HUANG, Yi-Chen TSAI, Chieh-Wen CHANG, Cheng-Wei CHANG