Patents by Inventor Roy Moeller

Roy Moeller 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).

  • Publication number: 20150008311
    Abstract: The invention generally relates to an assembly of a first RF component and a second RF component in a mass spectrometer, the first RF component comprising a first set of electrodes and the second RF component comprising a second set of electrodes, wherein the RF components are located and aligned end-to-end to one another, and wherein a transverse dimension of the electrodes of the first set is smaller than that of the electrodes of the second set. The assembly further comprises a conductive electric field screen located at an outer periphery of the first set of electrodes and facing the electrodes of the second set as to reduce RF electric field cross-talk between the electrodes of the first set and those of the second set. The invention affords for technically simple and economic means to reduce cross-talk or capacitive coupling between adjacent RF components in a mass spectrometer.
    Type: Application
    Filed: July 5, 2013
    Publication date: January 8, 2015
    Inventors: Felician Muntean, Roy Moeller, Stephen Zanon
  • Patent number: 8921770
    Abstract: The invention generally relates to an assembly of a first RF component and a second RF component in a mass spectrometer, the first RF component comprising a first set of electrodes and the second RF component comprising a second set of electrodes, wherein the RF components are located and aligned end-to-end to one another, and wherein a transverse dimension of the electrodes of the first set is smaller than that of the electrodes of the second set. The assembly further comprises a conductive electric field screen located at an outer periphery of the first set of electrodes and facing the electrodes of the second set as to reduce RF electric field cross-talk between the electrodes of the first set and those of the second set. The invention affords for technically simple and economic means to reduce cross-talk or capacitive coupling between adjacent RF components in a mass spectrometer.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: December 30, 2014
    Inventors: Felician Muntean, Roy Moeller, Stephen Zanon
  • Patent number: 8314385
    Abstract: A radio frequency component for use in a mass spectrometer is described. The radio frequency component includes a plurality of electrodes. The plurality of electrodes is configured around a central axis to create an ion channel within the plurality of electrodes. In addition, each of the plurality of electrodes is paired with an opposing electrode across the central axis. And, at least one electrode pair has an electrode extension on each electrode. The electrode extension is configured to overlap at least a portion of a proximate electrode of a second radio frequency component.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: November 20, 2012
    Assignee: Bruker Daltonics, Inc.
    Inventor: Roy Moeller
  • Publication number: 20120267521
    Abstract: A radio frequency component for use in a mass spectrometer is described. The radio frequency component includes a plurality of electrodes. The plurality of electrodes is configured around a central axis to create an ion channel within the plurality of electrodes. In addition, each of the plurality of electrodes is paired with an opposing electrode across the central axis. And, at least one electrode pair has an electrode extension on each electrode. The electrode extension is configured to overlap at least a portion of a proximate electrode of a second radio frequency component.
    Type: Application
    Filed: April 19, 2011
    Publication date: October 25, 2012
    Applicant: BRUKER CORPORATION
    Inventor: Roy Moeller
  • Patent number: 7291845
    Abstract: In a method for inhibiting space charge-related effects in an ion source, an electron beam is directed into a chamber to produce ions from sample material in the chamber. A voltage pulse is applied to the chamber to perturb an electron space charge present in the chamber. The ion source may be an electron impact ionization (EI) apparatus. The ion source may operated in conjunction with a mass spectrometry system.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: November 6, 2007
    Assignee: Varian, Inc.
    Inventors: Roy Moeller, Felician Muntean, Urs Steiner
  • Publication number: 20060237641
    Abstract: In a method for inhibiting space charge-related effects in an ion source, an electron beam is directed into a chamber to produce ions from sample material in the chamber. A voltage pulse is applied to the chamber to perturb an electron space charge present in the chamber. The ion source may be an electron impact ionization (EI) apparatus. The ion source may operated in conjunction with a mass spectrometry system.
    Type: Application
    Filed: April 26, 2005
    Publication date: October 26, 2006
    Inventors: Roy Moeller, Felician Muntean, Urs Steiner