Patents by Inventor Guping Tang

Guping Tang 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).

  • Biodegradable copolymer and nucleic acid delivery system
    Publication number: 20040185564
    Abstract: The present invention provides positively chargeable biodegradable copolymers composed of a low molecular weight polycationic copolymer polyethylenimine linked by cyclodextrin, a method for the copolymer synthesis and the method of using the copolymers for intracellular delivery of nucleic acid molecules. The copolymers comprise ester bonds for hydrolysis and positively charged amines for forming complexes with negatively charged nucleic acids. The copolymers of the invention are useful as delivery systems of therapeutic genetic materials for gene therapy.
    Type: Application
    Filed: January 22, 2004
    Publication date: September 23, 2004
    Inventors: Guping Tang, Yuexia Ma, Shu Wang