Patents by Inventor Teh Shan Chang

Teh Shan 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).

  • Herbal composition for stimulating blood circulation
    Patent number: 5942233
    Abstract: This invention relates to an herb composition which comprises an amount of 30 to 45% by weight of one or more herbs for invigorating of blood circulation, an amount of 55 to 70% by weight of one or more herbs for excreting toxin from human body, and an amount of 0.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: August 24, 1999
    Inventor: Teh Shan Chang