Patents by Inventor Jean-Paul Torre

Jean-Paul Torre 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).

  • Patent number: 4346147
    Abstract: A method of manufacturing nitrided silicon parts which retain their mechanical properties after hot oxidation, said method consisting of sintering silicon powder in an atmosphere which is rich in nitrogen. 1% to 10% by weight of aluminium powder is added to the silicon before sintering thereof and preliminary hot oxidation is effected in conditions which allow acicular mullite to form by the direct action of the aluminium and of a complement of oxygen molecules supplied by the outside medium on the silicon formed.
    Type: Grant
    Filed: January 4, 1980
    Date of Patent: August 24, 1982
    Assignee: Association pour la Recherche et Developpement des Methodes et Processus Industriels (ARMINES)
    Inventors: Pernette Barlier, Jean-Paul Torre
  • Patent number: 4331772
    Abstract: A method of manufacturing nitrided silicon parts by sintering a silicon powder containing aluminium under an atmosphere rich in nitrogen. A small quantity of carbon monoxide is added to the nitrogen atmosphere and the nitrogen and carbon monoxide partial pressures and the aluminium content of the silicon powder are chosen so that the oxidation reaction by the carbon monoxide on the nitrided silicon formed in the surfaces layers of the parts maintains therein an open porosity which is sufficient to allow the nitrogen to penetrate to the cores of the parts until the parts are homogeneously nitrided. Application to the manufacture of parts which must retain good mechanical strength at high temperature.
    Type: Grant
    Filed: October 17, 1980
    Date of Patent: May 25, 1982
    Assignee: Association pour la Recherche
    Inventors: Jean-Paul Torre, Joel Demit