Patents by Inventor Nathan K. Kaiser

Nathan K. Kaiser 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).

  • Ion-trapping devices providing shaped radial electric field
    Patent number: 7858930
    Abstract: Disclosed are ion cyclotron resonance (ICR) cells and other ion-trapping cells with plural groups of multiple trapping electrodes for shaping (e.g., flattening) the radial electric field within the ICR cell. Also disclosed are methods for controlling the electric field to diminish effects of de-phasing. The diminished effects are achieved by decreasing space-charge contributions by increasing the length of the ion-oscillation path along the z-axis of the ICR cell. The methods and devices enhance the time-domain signal of a Fourier-transform ion-cyclotron resonance mass spectrometer (FTICR-MS) and provide enhanced resolution and accuracy of mass measurements.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: December 28, 2010
    Assignee: Washington State University
    Inventors: Nathan K. Kaiser, James E. Bruce
  • ION-TRAPPING DEVICES PROVIDING SHAPED RADIAL ELECTRIC FIELD
    Publication number: 20090218485
    Abstract: Disclosed are ion cyclotron resonance (ICR) cells and other ion-trapping cells with plural groups of multiple trapping electrodes for shaping (e.g., flattening) the radial electric field within the ICR cell. Also disclosed are methods for controlling the electric field to diminish effects of de-phasing. The diminished effects are achieved by decreasing space-charge contributions by increasing the length of the ion-oscillation path along the z-axis of the ICR cell. The methods and devices enhance the time-domain signal of a Fourier-transform ion-cyclotron resonance mass spectrometer (FTICR-MS) and provide enhanced resolution and accuracy of mass measurements.
    Type: Application
    Filed: December 12, 2008
    Publication date: September 3, 2009
    Inventors: Nathan K. Kaiser, James E. Bruce