Patents by Inventor Alain Dujardin

Alain Dujardin 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).

  • Microwave antenna capable of operating at high temperature, in particular for a space-going aircraft
    Patent number: 5231409
    Abstract: A microwave antenna capable of operating at high temperature comprises at least one waveguide opening to the outside through an opening in a covering panel and including a tubular portion integrally formed with the panel, projecting inwards therefrom, and connected to the remainder of the panel around the opening, the panel and the integrated waveguide being made of a refractory composite material capable of ensuring microwave propagation and constituting a structural element capable of being raised to high temperature. The waveguide is filled with a refractory dielectric material such as an alumina-alumina type composite material.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: July 27, 1993
    Assignee: Societe Europeenne de Propulsion
    Inventors: Jean-Pierre Astier, Christian Bertone, Alain Dujardin