Patents by Inventor Alan W. Ellinthorpe

Alan W. Ellinthorpe 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).

  • Electrostrictive acoustic projector and polymers used therein
    Patent number: 5835453
    Abstract: Polymer materials having a low Young's modulus, a low dielectric constant, and a high apparent piezoelectric response when subjected to a high direct bias voltage and a superimposed alternating voltage, used as the active element in an underwater acoustic signal projector of a sonar system.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: November 10, 1998
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Kenneth J. Wynne, Robert B. Fox, Alan W. Ellinthorpe