Patents by Inventor Nikolai Konenkov

Nikolai Konenkov 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 of operating quadrupoles with added multipole fields to provide mass analysis in islands of stability
    Patent number: 7709786
    Abstract: A method of processing ions in a quadrupole rod set is provided, comprising a) establishing and maintaining a two-dimensional substantially quadrupole field having a quadrupole harmonic with amplitude A2 and a selected higher order harmonic with amplitude Am radially confining ions having Mathieu parameters a and q within a stability region defined in terms of the Mathieu parameters a and q; c) adding an auxiliary excitation field to transform the stability region into a plurality of smaller stability islands defined in terms of the Mathieu parameters a and q; and, d) adjusting the two-dimensional substantially quadrupole field to place ions within a selected range of mass-to-charge ratios within a selected stability island in the plurality of stability islands.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: May 4, 2010
    Assignee: The University of British Columbia
    Inventors: Nikolai Konenkov, Donald J. Douglas, Xianzhen Zhao
  • Linear quadrupoles with added hexapole fields and method of building and operating same
    Patent number: 7541579
    Abstract: A mass spectrometer and a method of operating and building same is provided in which a hexapole component is deliberately added to a substantially quadrupole field. This can result in unwanted octopole and dipole fields also being added to the substantially quadrupole field. Modifications to the mass spectrometer as well as ways of operating the mass spectrometer are provided for dealing with the unwanted octopole and dipole fields.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: June 2, 2009
    Assignees: The University of British Columbia, MDS Analytical Technologies, a business unit of MDS Inc.
    Inventors: Nikolai Konenkov, Frank Londry, Chuanfan Ding, Donald J. Douglas
  • Method of operating quadrupoles with added multipole fields to provide mass analysis in islands of stability
    Publication number: 20070295900
    Abstract: A method of processing ions in a quadrupole rod set us provided. The method comprises a) establishing and maintaining a two-dimensional substantially quadrupole field for processing the ions, the field having a quadrupole harmonic with amplitude A2 and a selected higher order harmonic with amplitude Am wherein m is an integer greater than 2, and the magnitude of Am is greater than 0.
    Type: Application
    Filed: February 7, 2007
    Publication date: December 27, 2007
    Applicant: The University of British Columbia
    Inventors: Nikolai Konenkov, Donald Douglas, Xianzhen Zhao
  • Linear quadrupoles with added hexapole fields and method of building and operating same
    Publication number: 20070272853
    Abstract: A mass spectrometer and a method of operating and building same is provided in which a hexapole component is deliberately added to a substantially quadrupole field. This can result in unwanted octopole and dipole fields also being added to the substantially quadrupole field. Modifications to the mass spectrometer as well as ways of operating the mass spectrometer are provided for dealing with the unwanted octopole and dipole fields.
    Type: Application
    Filed: February 7, 2007
    Publication date: November 29, 2007
    Applicant: The University of British Columbia
    Inventors: Nikolai Konenkov, Frank Londry, Chuanfan Ding, Donald Douglas