Patents by Inventor Kerry M. HASSELL

Kerry M. HASSELL 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).

  • Method and apparatus for conversion of multiple analyte cation types to a single analyte anion type via ion/ion charge inversion
    Patent number: 8927295
    Abstract: An apparatus and method for a sample using a mass spectrometer is described, including, generating ions of a first polarity from an analyte using electrospray ionization; generating ions of a second polarity from a reagent; injecting the ions of the first polarity and ions of the second polarity in sequence into a chamber of the mass spectrometer such that the ions of the first polarity and the ions of the second polarity interact in the chamber to form analyte ions having the second polarity; and, analyzing the mass spectrum of the analyte ions of the second polarity. A reagent such as a polyamidomine is selected to preferentially yield analyte ions of the second polarity having a desired mass-to-charge ratio.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: January 6, 2015
    Assignee: Purdue Research Foundation
    Inventors: Kerry M. Hassell, Scott A. McLuckey, Yves Leblanc
  • METHOD AND APPARATUS FOR CONVERSION OF MULTIPLE ANALYTE CATION TYPES TO A SINGLE ANALYTE ANION TYPE VIA ION/ION CHARGE INVERSION
    Publication number: 20110059546
    Abstract: An apparatus and method for a sample using a mass spectrometer is described, including, generating ions of a first polarity from an analyte using electrospray ionization; generating ions of a second polarity from a reagent; injecting the ions of the first polarity and ions of the second polarity in sequence into a chamber of the mass spectrometer such that the ions of the first polarity and the ions of the second polarity interact in the chamber to form analyte ions having the second polarity; and, analyzing the mass spectrum of the analyte ions of the second polarity. A reagent such as a polyamidomine is selected to preferentially yield analyte ions of the second polarity having a desired mass-to-charge ratio.
    Type: Application
    Filed: September 2, 2010
    Publication date: March 10, 2011
    Inventors: Kerry M. HASSELL, Scott A. MCLUCKEY, Yves LEBLANC