Patents by Inventor Steven D. Pringle

Steven D. Pringle 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).

  • Mass spectrometer device and method using scanned phase applied potentials in ion guidance
    Patent number: 8455819
    Abstract: An ion guide or mass analyser is disclosed comprising a plurality of electrodes having apertures through which ions are transmitted in use. A pseudo-potential barrier is created at the exit of the ion guide or mass analyser. The amplitude or depth of the pseudo-potential barrier is inversely proportional to the mass to charge ratio of an ion. One or more transient DC voltages are applied to the electrodes of the ion guide or mass analyser in order to urge ions along the length of the ion guides or mass analyser. The amplitude of the transient DC voltage applied to the electrode may be increased with time so that ions are caused to be emitted from the ion guide or mass analyser in reverse order of their mass to charge ratio.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: June 4, 2013
    Assignee: Micromass UK Limited
    Inventors: Martin Green, Jason Lee Wildgoose, Steven D. Pringle, Daniel James Kenny