Patents by Inventor Frederick S. Ward

Frederick S. Ward 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).

  • Radar transparent materials
    Patent number: 4970634
    Abstract: A structure for reflecting visible light or near visible light, wherein the structure is formed of a low dielectric constant material having an external surface comprising an electrically conductive layer of material which has an array of slots therein so as to be substantially transparent to microwave radiation of a predetermined wavelength which will impinge upon the structure during use, while being reflective to light.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: November 13, 1990
    Assignee: Plessey Overseas Limited
    Inventors: William G. Howell, Frederick S. Ward, John F. Graver