Patents by Inventor Elise Dennis

Elise Dennis 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).

  • RESOLUTION AND MASS RANGE PERFORMANCE IN DISTANCE-OF-FLIGHT MASS SPECTROMETRY WITH A MULTICHANNEL FOCAL-PLANE CAMERA DETECTOR
    Publication number: 20140138538
    Abstract: A distance-of-flight mass spectrometer (DOFMS) includes an ion source, a field-free region, an extraction region in which ions are accelerated, and a spatially-selective detector for spatially selectively detecting ions extracted by the extraction region. A method for operating a distance-of-flight mass spectrometer DOFMS comprises controlling a detection time in such a way as to permit ions with progressively greater mass-to-charge (m/z) ratios to enter the extraction region of the DOFMS at positions which will permit the ions with progressively greater m/z ratios to enter the detector of the DOFMS, generating a component mass spectrum at each selected value of detection time, and then assembling a composite mass spectrum by shifting the distance-of-flight axis of each component mass spectrum by a distance corresponding to the change in detection time.
    Type: Application
    Filed: April 16, 2012
    Publication date: May 22, 2014
    Applicants: INDIANA UNIVERSITY RESEARCH AND TECHNOLOGY CORPORATION
    Inventors: Gary M. Hieftje, Christie George Enke, Alexander W. Graham, Steven J. Ray, Elise Dennis, Charles J. Barinaga, David W. Koppenaal
  • Method for enhancement of mass resolution over a limited mass range for time-of-flight spectrometry
    Patent number: 8604423
    Abstract: Novel methods and instrumentation for mass spectrometry are described. Zoom-time of flight mass spectrometry (Zoom-TOF) allows increased mass resolution over a pre-determined specific range of masses. Methods for retrofitting traditional time-of-flight (TOF) and distance of flight (DOF) mass spectrometers are described, as well as novel instruments capable of performing Zoom-TOF analyses.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: December 10, 2013
    Assignees: Indiana University Research and Technology Corporation, Battelle Memorial Institute
    Inventors: Christie G. Enke, Steven J. Ray, Alexander W. Graham, Gary M. Hieftje, Elise Dennis, Charles J. Barinaga, David W. Koppenaal
  • METHOD FOR ENHANCEMENT OF MASS RESOLUTION OVER A LIMITED MASS RANGE FOR TIME-OF-FLIGHT SPECTROMETRY
    Publication number: 20130020482
    Abstract: Novel methods and instrumentation for mass spectrometry are described. Zoom-time of flight mass spectrometry (Zoom-TOF) allows increased mass resolution over a pre-determined specific range of masses. Methods for retrofitting traditional time-of-flight (TOF) and distance of flight (DOF) mass spectrometers are described, as well as novel instruments capable of performing Zoom-TOF analyses.
    Type: Application
    Filed: April 5, 2011
    Publication date: January 24, 2013
    Applicant: BATTELLE MEMORIAL INSTITUTE
    Inventors: Christie G. Enke, Steven J. Ray, Alexander W. Graham, Gary M. Hieftje, Elise Dennis, Charles J. Barinaga, David W. Koppenaal