Patents by Inventor Charles L. Jeffery

Charles L. Jeffery 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).

  • Ambient methods and apparatus for rapid laser trace constituent analysis
    Patent number: 6407811
    Abstract: A method and apparatus are disclosed for measuring trace amounts of constituents in samples by using laser induced breakdown spectroscopy and laser induced fluorescence under ambient conditions. The laser induced fluorescence is performed at a selected wavelength corresponding to an absorption state of a selected trace constituent. The intensity value of the emission decay signal which is generated by the trace constituent is compared to calibrated emission intensity decay values to determine the amount of trace constituent present.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: June 18, 2002
    Assignee: Bechtel BWXT Idano, LLC
    Inventors: Stuart C. Snyder, Judy K. Partin, Jon D. Grandy, Charles L. Jeffery