Patents by Inventor Ren-Xi Zhuo

Ren-Xi Zhuo 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).

  • Phosphate based biodegradable polymers
    Patent number: 6805876
    Abstract: Featured are biodegradable polymers comprising repeat units derived from cyclic phosphate monomers and optionally further comprising repeat units derived from lactide or caprolactone monomers. Also featured are methods for preparing the biodegradable polymers of the invention and biodegradable polymer compositions comprising a biologically active substance and a biodegradable polymer. Additionally featured are articles and microspheres prepared from biodegradable polymers and polymer compositions of the invention. Further, methods for the controlled release of a biologically active substance using the biodegradable polymers of the invention are also described.
    Type: Grant
    Filed: March 10, 2001
    Date of Patent: October 19, 2004
    Assignee: Johns Hopkins University
    Inventors: Kam W. Leong, Wen Jie, Ren-Xi Zhuo, Hai-Quan Mao
  • Phosphate based biodegradable polymers
    Publication number: 20020155092
    Abstract: Featured are biodegradable polymers comprising repeat units derived from cyclic phosphate monomers and optionally further comprising repeat units derived from lactide or caprolactone monomers. Also featured are methods for preparing the biodegradable polymers of the invention and biodegradable polymer compositions comprising a biologically active substance and a biodegradable polymer. Additionally featured are articles and microspheres prepared from biodegradable polymers and polymer compositions of the invention. Further, methods for the controlled release of a biologically active substance using the biodegradable polymers of the invention are also described.
    Type: Application
    Filed: March 10, 2001
    Publication date: October 24, 2002
    Inventors: Kam Leong, Wen Jie, Ren-Xi Zhuo, Hai-Quan Mao