Patents by Inventor Xiangling Xu

Xiangling Xu 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).

  • PARTICLES WITH HIGH SURFACE CHARGE FOR CRYSTALLINE COLLOIDAL ARRAYS
    Publication number: 20080188381
    Abstract: A method of preparing a dispersion of polymeric particles is disclosed. Monomers are emulsion polymerized in the presence of an ionic monomer to produce highly charged polymeric particles. At least 50% of the ionic monomer in the dispersion is bound to the polymeric particles.
    Type: Application
    Filed: February 7, 2007
    Publication date: August 7, 2008
    Inventors: Xiangling Xu, Sean Purdy
  • CRYSTALLINE COLLOIDAL ARRAYS RESPONSIVE TO AN ACTIVATOR
    Publication number: 20080185498
    Abstract: A method of producing a radiation diffractive sensor that diffracts radiation according to Bragg's law is disclosed. The sensor is produced by forming an ordered periodic array of particles on a substrate, coating the array of particles with a polymeric matrix, curing the matrix to fix the array of particles within the matrix and contacting the fixed array with an activator, wherein the activator shifts the wavelength of radiation diffracted by the sensor from a first wavelength to a second wavelength.
    Type: Application
    Filed: February 7, 2007
    Publication date: August 7, 2008
    Inventors: Sean Purdy, Noel Vanier, Xiangling Xu, Robert Cavlovich