Patents by Inventor Changtung Chang

Changtung 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).

  • Publication number: 20050196400
    Abstract: Gene expression elements and their use in production of chimeric antibodies with human constant regions and murine variable regions, and mouse human chimeric antibodies having specificity to human tumor cells, methods of their production, and their use.
    Type: Application
    Filed: October 3, 2002
    Publication date: September 8, 2005
    Inventors: Marc Better, Arnold Horwitz, Randy Robinson, Shau-Ping Lei, Changtung Chang