Patents by Inventor Xavier DeVaux

Xavier DeVaux 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).

  • Composite alumina/metal powders, cermets made from said powders, and processes of production
    Patent number: 5462903
    Abstract: The invention relates to nano-composite powders of alumina and metal constituted of grains of micronic size. Each grain comprises a compact matrix of alumina of a specific surface area less than 5 m.sup.2 /g, in which are dispersed crystallites of transition metals of alloys of these metals, of sizes less than 50 nm. The powder according to the invention may be produced starting with a precursor comprised of a mixed carboxylic salt of aluminum and one or more transition metals. The powders according to the invention permit producing by sintering cermets of alumina/metal benefitting from greatly improved mechanical and thermo-mechanical properties.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: October 31, 1995
    Assignee: Centre National De La Recherche Scientifique (C.N.R.S.)
    Inventors: Abel Rousset, Xavier Devaux
  • Composite alumina/metal powders, cermets made from said powders, and processes of production
    Patent number: 5338714
    Abstract: The invention relates to nano-composite powders of alumina and metal constituted of grains of micronic size. Each grain comprises a compact matrix of alumina of a specific surface area less than 5 m.sup.2 /g, in which are dispersed crystallites of transition metals of alloys of these metals, of sizes less than 50 nm. The powder according to the invention may be produced starting with a precursor comprised of a mixed carboxylic salt of aluminum and one or more transition metals. The powders according to the invention permit producing by sintering cermets of alumina/metal benefitting from greatly improved mechanical and thermo-mechanical properties.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: August 16, 1994
    Assignee: Centre National de la Recherche Scientifique (C.N.R.S.)
    Inventors: Abel Rousset, Xavier DeVaux