Patents by Inventor Hubert Frejaville

Hubert Frejaville 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).

  • Method and oven for homogeneously melting by microwaves with oscillation of stationary waves for vitrifying materials and gas outlet flow
    Patent number: 5822879
    Abstract: The method and oven of the invention are able to homogeneously and continuously melt about twelve kilograms of glass per hour.A microwave oven is used with the wave being monomodal and with frequency of 915 MHz. Disposed opposite the entrance (15) of the microwaves is a piston (20) continuously oscillating so as to constantly make the position of the reflection surface (21) of the electromagnetic waves vary. Thus, all the points of the melting bath surface (9) are heated.Application for the vitrification of radioactive and toxic waste.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: October 20, 1998
    Assignees: COMMISSARIAT a l'Energie Atomique, Compagnie General des Matieres Nucleaires
    Inventors: Jean-Jacques Vincent, Jean-Marc Silve, Rene Cartier, Hubert Frejaville