Patents by Inventor William James Tiffany

William James Tiffany 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).

  • Intrusion detection using a conductive material
    Patent number: 8004419
    Abstract: Tampering with an assembly that includes an integrated circuit is detected by measuring a change in at least one property of a conductive molding formed over at least a portion of the integrated circuit. For example, the conductive molding can be a mixture of resin with conductive powder and/or fibers. The molding can be formed as a continuous region or as strips of conductive material. Conductive contacts are positioned to provide and receive current through portions of the conductive material. For example, the property of the molding can be an impedance of a portion of the conductive molding. A significant change in the impedance measured through one or more conductive contacts indicates tampering with the assembly.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: August 23, 2011
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Randal Quincy Thornley, David Alan Roberts, William James Tiffany
  • Intrusion detection using a conductive material
    Publication number: 20100182020
    Abstract: Tampering with an assembly that includes an integrated circuit is detected by measuring a change in at least one property of a conductive molding formed over at least a portion of the integrated circuit. For example, the conductive molding can be a mixture of resin with conductive powder and/or fibers. The molding can be formed as a continuous region or as strips of conductive material. Conductive contacts are positioned to provide and receive current through portions of the conductive material. For example, the property of the molding can be an impedance of a portion of the conductive molding. A significant change in the impedance measured through one or more conductive contacts indicates tampering with the assembly.
    Type: Application
    Filed: March 24, 2010
    Publication date: July 22, 2010
    Inventors: Randal Quincy Thornley, David Alan Roberts, William James Tiffany
  • Intrusion detection using a conductive material
    Patent number: 7710286
    Abstract: Tampering with an assembly that includes an integrated circuit is detected by measuring a change in at least one property of a conductive molding formed over at least a portion of the integrated circuit. For example, the conductive molding can be a mixture of resin with conductive powder and/or fibers. The molding can be formed as a continuous region or as strips of conductive material. Conductive contacts are positioned to provide and receive current through portions of the conductive material. For example, the property of the molding can be an impedance of a portion of the conductive molding. A significant change in the impedance measured through one or more conductive contacts indicates tampering with the assembly.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: May 4, 2010
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Randal Quincy Thornley, David Alan Roberts, William James Tiffany