Patents by Inventor Cheng-jian Xu

Cheng-jian Xu 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).

  • Publication number: 20090081805
    Abstract: The present invention relates to a method for finding active ingredients/groups of constitutes from a multi-component system that are active as indicated by specific or a group of activity test. The method involves the use of a hyphenated instrument for determining the active ingredients.
    Type: Application
    Filed: September 24, 2007
    Publication date: March 26, 2009
    Applicant: The Hong Kong Polytechnic University
    Inventors: Foo-tim Chau, Cheng-jian Xu