Patents by Inventor Andrew Stuart Troup

Andrew Stuart Troup 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).

  • Fabrication of mesoscopic lorentz magnetoresistive structures
    Patent number: 8125742
    Abstract: A Lorentz Magnetoresistive sensor having an extremely small lead width and lead spacing is disclosed. The sensor can be constructed by a novel fabrication method that allows the leads to be deposited in such a manner that lead width and spacing between the leads is determined by the as deposited thicknesses of the lead layers and electrically insulating spacer layers between the leads rather than by photolithography. Because the lead thicknesses and lead spacings are not defined photolithograhically, the lead thickness and lead spacing are not limited by photolithographic resolution limits.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: February 28, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Bruce Alvin Gurney, Ernesto E. Marinero, Andrew Stuart Troup, David Arfon Williams, Joerg Wunderlich
  • Lorentz magnetoresistive sensor with integrated signal amplification
    Patent number: 8035932
    Abstract: A Lorentz magnetoresistive sensor having integrated signal amplification. The sensor is constructed upon a substrate such as a semiconductor material, and an amplification circuit such as transistor is constructed directly into the substrate on which the magnetoresistive device is constructed. This integrated signal amplification greatly enhances sensor performance by eliminating a great deal of signal noise that would otherwise be added to the read signal.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: October 11, 2011
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Bruce Alvin Gurney, Ernesto E. Marinero, Andrew Stuart Troup, David Arfon Williams, Joerg Wunderlich
  • EMR SENSOR WITH INTEGRATED SIGNAL AMPLIFICATION
    Publication number: 20090080118
    Abstract: A Lorentz magnetoresistive sensor having integrated signal amplification. The sensor is constructed upon a substrate such as a semiconductor material, and an amplification circuit such as transistor is constructed directly into the substrate on which the magnetoresistive device is constructed. This integrated signal amplification greatly enhances sensor performance by eliminating a great deal of signal noise that would otherwise be added to the read signal.
    Type: Application
    Filed: September 20, 2007
    Publication date: March 26, 2009
    Inventors: Bruce Alvin Gurney, Ernesto E. Marinero, Andrew Stuart Troup, David Arfon Williams, Joerg Wunderlich
  • FABRICATION OF MESOSCOPIC LORENTZ MAGNETORESISTIVE STRUCTURES
    Publication number: 20090073615
    Abstract: A Lorentz Magnetoresistive sensor having an extremely small lead width and lead spacing is disclosed. The sensor can be constructed by a novel fabrication method that allows the leads to be deposited in such a manner that lead width and spacing between the leads is determined by the as deposited thicknesses of the lead layers and electrically insulating spacer layers between the leads rather than by photolithography. Because the lead thicknesses and lead spacings are not defined photolithograhically, the lead thickness and lead spacing are not limited by photolithographic resolution limits.
    Type: Application
    Filed: September 18, 2007
    Publication date: March 19, 2009
    Inventors: Bruce Alvin Gurney, Ernesto E. Marinero, Andrew Stuart Troup, David Arfon Williams, Joerg Wunderlich