Patents by Inventor Raymond Ropars

Raymond Ropars 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).

  • Luneberg type passive reflector for circularly polarized waves
    Patent number: 4260991
    Abstract: A luneberg type passive reflector for circularly polarized waves consists of a woven cloth made partially of conductive wires located within the dielectric sphere the surface of which is covered with a set of parallel wires perpendicular with the conductive wires in said cloth. The conductive wires of the cloth are less than five hundredths of wavelength in diameter and their spacing is between 1/4 and 1/20 of a wavelength. The wires interwoven with said metal wires to form the cloth are preferably made of flax.
    Type: Grant
    Filed: July 24, 1979
    Date of Patent: April 7, 1981
    Assignee: Societe Lignes Telegraphiques et Telephoniques
    Inventors: Francois Dachert, Jean Gelin, Raymond Ropars