Patents by Inventor Haifei Zhang

Haifei Zhang 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: 20060154067
    Abstract: The present invention relates to porous beads and to methods of production thereof, in particular to a method of producing hydrophilic polymeric beads by freeze-drying a droplet containing a polymeric material in a continuous phase of an oil-in-water (O/W) emulsion.
    Type: Application
    Filed: July 29, 2003
    Publication date: July 13, 2006
    Inventors: Andrew Cooper, Haifei Zhang