Patents Assigned to Extranuclear Laboratories Inc.
  • Method and apparatus for improved focusing of ion currents in quadrupole mass filter
    Patent number: 3936634
    Abstract: Application of dc potentials of values other than ground to materials which appear as conductors to dc and low frequency ac electric fields and as dielectrics to high frequency ac electric fields in order to compensate for changes of potential due to ion and electron currents reaching the material and/or to provide for improved focusing of the ions, particularly with large ion currents, into a quadrupole mass filter.
    Type: Grant
    Filed: December 10, 1974
    Date of Patent: February 3, 1976
    Assignee: Extranuclear Laboratories Inc.
    Inventor: Wade L. Fite