Patents by Inventor Chenxia Guan

Chenxia Guan 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).

  • MODIFICATION OF STENT SURFACES TO IMPART FUNCTIONALITY
    Publication number: 20120059456
    Abstract: In one aspect, the invention relates to coated substrates comprising a substrate having a surface, a cationic polymer layer adjacent the surface of the substrate, an anionic polymer layer adjacent the cationic polymer layer and methods for producing and using same. In one aspect, the cationic polymer layer comprises at least one residue of a first compound having the structure: In a further aspect, the anionic polymer layer comprises at least one residue of a compound having the structure: In a yet further aspect, at least one nanoparticle or microparticle is positioned within one or both of the anionic polymer layer and the cationic polymer layer. In a still further aspect, the outermost polymer layer has a surface having fractal characteristics. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: November 12, 2011
    Publication date: March 8, 2012
    Inventors: V. Prasad Shastri, Thomas Soike, Chenxia Guan
  • MODIFICATION OF STENT SURFACES TO IMPART FUNCTIONALITY
    Publication number: 20080243113
    Abstract: In one aspect, the invention relates to coated substrates comprising a substrate having a surface, a cationic polymer layer adjacent the surface of the substrate, an anionic polymer layer adjacent the cationic polymer layer and methods for producing and using same. In one aspect, the cationic polymer layer comprises at least one residue of a first compound having the structure: In a further aspect, the anionic polymer layer comprises at least one residue of a compound having the structure: In a yet further aspect, at least one nanoparticle or microparticle is positioned within one or both of the anionic polymer layer and the cationic polymer layer. In a still further aspect, the outermost polymer layer has a surface having fractal characteristics. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Application
    Filed: November 8, 2007
    Publication date: October 2, 2008
    Inventors: V. Prasad Shastri, Thomas Soike, Chenxia Guan