Patents by Inventor David John LANGRIDGE

David John LANGRIDGE 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).

  • Controlling ion temperature in an ion guide
    Patent number: 11282689
    Abstract: There is provided a method of guiding ions, comprising providing an ion guide comprising a plurality of electrodes, confining ions radially within said ion guide by applying one or more voltages to said plurality of electrodes, applying an orthogonal DC field along at least a portion of said ion guide in order to control the temperature of ions as they travel through said ion guide, and applying an electrostatic driving potential to said plurality of electrodes to urge ions along the axial length of the ion guide, wherein said electrostatic driving potential is applied in the form of a DC travelling wave potential or other transient DC potential.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: March 22, 2022
    Assignee: MICROMASS UK LIMITED
    Inventors: Martin Raymond Green, Kevin Giles, David John Langridge
  • CONTROLLING ION TEMPERATURE IN AN ION GUIDE
    Publication number: 20210287893
    Abstract: There is provided a method of guiding ions, comprising providing an ion guide comprising a plurality of electrodes, confining ions radially within said ion guide by applying one or more voltages to said plurality of electrodes, applying an orthogonal DC field along at least a portion of said ion guide in order to control the temperature of ions as they travel through said ion guide, and applying an electrostatic driving potential to said plurality of electrodes to urge ions along the axial length of the ion guide, wherein said electrostatic driving potential is applied in the form of a DC travelling wave potential or other transient DC potential.
    Type: Application
    Filed: August 25, 2017
    Publication date: September 16, 2021
    Inventors: Martin Raymond Green, Kevin Giles, David John Langridge
  • Method of separating ions
    Patent number: 10811244
    Abstract: The present disclosure relates generally to a method of separating ions according to their ion mobility, comprising (i) accumulating a first population of ions in a first region of an ion mobility separator, (ii) separating said first population of ions according to their ion mobility in said first region of said ion mobility separator, and (iii) accumulating a second population of ions in said first region of said ion mobility separator whilst said first population of ions are being separated according to their ion mobility in said ion mobility separator.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: October 20, 2020
    Assignee: MICROMASS UK LIMITED
    Inventors: Martin Raymond Green, Kevin Giles, David John Langridge
  • Method of Separating Ions
    Publication number: 20200118807
    Abstract: The present disclosure relates generally to a method of separating ions according to their ion mobility, comprising (i) accumulating a first population of ions in a first region of an ion mobility separator, (ii) separating said first population of ions according to their ion mobility in said first region of said ion mobility separator, and (iii) accumulating a second population of ions in said first region of said ion mobility separator whilst said first population of ions are being separated according to their ion mobility in said ion mobility separator.
    Type: Application
    Filed: October 14, 2019
    Publication date: April 16, 2020
    Inventors: Martin Raymond Green, Kevin Giles, David John Langridge
  • Method of separating ions
    Patent number: 10446385
    Abstract: The present disclosure relates generally to a method of separating ions according to their ion mobility, comprising (i) accumulating a first population of ions in a first region of an ion mobility separator, (ii) separating said first population of ions according to their ion mobility in said first region of said ion mobility separator, and (iii) accumulating a second population of ions in said first region of said ion mobility separator while said first population of ions are being separated according to their ion mobility in said ion mobility separator.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: October 15, 2019
    Assignee: Micromass UK Limited
    Inventors: Martin Raymond Green, Kevin Giles, David John Langridge
  • Method of Separating Ions
    Publication number: 20170338093
    Abstract: The present disclosure relates generally to a method of separating ions according to their ion mobility, comprising (i) accumulating a first population of ions in a first region of an ion mobility separator, (ii) separating said first population of ions according to their ion mobility in said first region of said ion mobility separator, and (iii) accumulating a second population of ions in said first region of said ion mobility separator whilst said first population of ions are being separated according to their ion mobility in said ion mobility separator.
    Type: Application
    Filed: May 16, 2017
    Publication date: November 23, 2017
    Inventors: Martin Raymond GREEN, Kevin GILES, David John LANGRIDGE