Patents by Inventor Phillippe Henneguez

Phillippe Henneguez 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 for sintering ceramic tubes
    Patent number: 5935513
    Abstract: A method for sintering tube pre-forms in an furnace for obtaining ceramic tubes which are extremely straight is provided, in which, during sintering, the tube preforms are placed inside supporting tubes in ceramic material, the support tubes 1 containing the tube preforms being arranged parallel to each other forming stacks 7 of layers 3 supported by support plates 4 in a refractory material, the inside surface of the support tubes being out-of-true by less than 0.1 mm over a length of 90 mm.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: August 10, 1999
    Assignee: Societe des Ceramiques Techniques
    Inventors: Martial Martreuil, Jacques Gillot, Phillippe Henneguez