Patents by Inventor Stephanie J. Fertig

Stephanie J. Fertig 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).

  • Microelectronic device and method for label-free detection and quantification of biological and chemical molecules
    Patent number: 6482639
    Abstract: Molecular recognition-based electronic sensor, which is gateless, depletion mode field effect transistor consisting of source and drain diffusions, a depletion-mode implant, and insulating layer chemically modified by immobilized molecular receptors that enables miniaturized label-free molecular detection amenable to high-density array formats. The conductivity of the active channel modulates current flow through the active channel when a voltage is applied between the source and drain diffusions. The conductivity of the active channel is determined by the potential of the sample solution in which the device is immersed and the device-solution interfacial capacitance. The conductivity of the active channel modulates current flow through the active channel when a voltage is applied between the source and drain diffusions. The interfacial capacitance is determined by the extent of occupancy of the immobilized receptor molecules by target molecules. Target molecules can be either charged or uncharged.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: November 19, 2002
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Eric S. Snow, Martin Peckerar, Leonard M. Tender, Stephanie J. Fertig, Frank K. Perkins
  • Microelectronic device and method for label-free detection and quantification of biological and chemical molecules
    Publication number: 20020012937
    Abstract: Molecular recognition-based electronic sensor, which is gateless, depletion mode field effect transistor consisting of source and drain diffusions, a depletion-mode implant, and insulating layer chemically modified by immobilized molecular receptors that enables miniaturized label-free molecular detection amenable to high-density array formats. The conductivity of the active channel modulates current flow through the active channel when a voltage is applied between the source and drain diffusions. The conductivity of the active channel is determined by the potential of the sample solution in which the device is immersed and the device-solution interfacial capacitance. The conductivity of the active channel modulates current flow through the active channel when a voltage is applied between the source and drain diffusions. The interfacial capacitance is determined by the extent of occupancy of the immobilized receptor molecules by target molecules. Target molecules can be either charged or uncharged.
    Type: Application
    Filed: June 22, 2001
    Publication date: January 31, 2002
    Inventors: Leonard M. Tender, Martin Peckerar, F. Keith Perkins, Stephanie J. Fertig, Eric S. Snow