Patents by Inventor Zhaochun Xu

Zhaochun 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).

  • Encoded excitation source Raman spectroscopy methods and systems
    Patent number: 7002679
    Abstract: Selected combinations from three or more light excitation wavelengths are serially impinged on a sample based on an encoding pattern. A plurality of spectra is detected from the sample responsive to respective ones of the selected combinations of light excitation wavelengths. A shifted Raman excitation spectral component and a non-shifted spectral component characteristic of the sample are identified based on the plurality of spectra.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: February 21, 2006
    Assignee: Duke University
    Inventors: David J. Brady, Nikos P. Pitsianis, Zhaochun Xu
  • ENCODED EXCITATION SOURCE RAMAN SPECTROSCOPY METHODS AND SYSTEMS
    Publication number: 20050254047
    Abstract: Selected combinations from three or more light excitation wavelengths are serially impinged on a sample based on an encoding pattern. A plurality of spectra is detected from the sample responsive to respective ones of the selected combinations of light excitation wavelengths. A shifted Raman excitation spectral component and a non-shifted spectral component characteristic of the sample are identified based on the plurality of spectra.
    Type: Application
    Filed: May 11, 2004
    Publication date: November 17, 2005
    Inventors: David Brady, Nikos Pitsianis, Zhaochun Xu