Patents by Inventor Thomas George McFarland

Thomas George McFarland 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 and apparatus for dual notch ripple filtering
    Patent number: 10141909
    Abstract: An apparatus includes a self-coupled transformer, a first band stop filter and a tank circuit connected in series with the first band stop filter between first and second windings of the self-coupled transformer. An inductor of the tank circuit acts as an out-of-phase third winding of the self-coupled transformer.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: November 27, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Melissa Jean Freeman, Thomas George McFarland, Margaret Ann Wiza, Douglas Link
  • Method and apparatus for dual notch ripple filtering
    Patent number: 9893705
    Abstract: An apparatus includes a self-coupled transformer, a first band stop filter and a tank circuit connected in series with the first band stop filter between first and second windings of the self-coupled transformer. An inductor of the tank circuit acts as an out-of-phase third winding of the self-coupled transformer.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: February 13, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Melissa Jean Freeman, Thomas George McFarland, Margaret Ann Wiza, Douglas Link
  • METHOD AND APPARATUS FOR DUAL NOTCH RIPPLE FILTERING
    Publication number: 20180026602
    Abstract: An apparatus includes a self-coupled transformer, a first band stop filter and a tank circuit connected in series with the first band stop filter between first and second windings of the self-coupled transformer. An inductor of the tank circuit acts as an out-of-phase third winding of the self-coupled transformer.
    Type: Application
    Filed: October 3, 2017
    Publication date: January 25, 2018
    Inventors: Melissa Jean Freeman, Thomas George McFarland, Margaret Ann Wiza, Douglas Link
  • METHOD AND APPARATUS FOR DUAL NOTCH RIPPLE FILTERING
    Publication number: 20160191010
    Abstract: An apparatus includes a self-coupled transformer, a first band stop filter and a tank circuit connected in series with the first band stop filter between first and second windings of the self-coupled transformer. An inductor of the tank circuit acts as an out-of-phase third winding of the self-coupled transformer.
    Type: Application
    Filed: December 31, 2014
    Publication date: June 30, 2016
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: MELISSA JEAN FREEMAN, Thomas George McFarland, Margaret Ann Wiza, Douglas Link