Patents by Inventor Leonard S. Calabrese

Leonard S. Calabrese 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).

  • Flexible circuit having flexing section of reduced stiffness, and method of manufacture thereof
    Patent number: 5219640
    Abstract: A flexible circuit is presented having a flexing (cyclic bending) section of lower stiffness than adjacent parts of the circuit. The lower stiffness in the flexing section is achieved by reducing the thickness of the flexing section, either by omitting or removing some or all of the dielectric material of the flexible circuit in the flexing section, or by replacing conventional dielectric material in the flexing section with a polymer of lower modulus of elasticity.
    Type: Grant
    Filed: September 11, 1991
    Date of Patent: June 15, 1993
    Assignee: Rogers Corporation
    Inventors: Samuel Gazit, Richard T. Traskos, Leonard S. Calabrese, Michael J. Taylor, Jeffrey B. Otto, Brett W. Kilhenny