Patents by Inventor Mark Tryer

Mark Tryer 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).

  • Electronic article surveillance antenna coils with variable wind geometry
    Patent number: 6504513
    Abstract: An EAS antenna having uniform antenna thickness along the antenna height is provided. The antenna is contains at least two overlapping coils where the individual coil cross-sections are variable with respect to the circumference. If the individual coil thickness is halved at the overlap, the antenna will have uniform thickness along the antenna height. This is accomplished by reducing the number of wire turns per layer along one or more sections of the coil, and simultaneously increasing the number of wire layers on the same sections.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: January 7, 2003
    Assignee: Sensormatic Electronics Corporation
    Inventors: Mark Tryer, Franklin H. Valade, Jr., Gilbert Fernandez, Pedro Lopez, Dale W. Raymond