Patents by Inventor Cuong Pham-Huu

Cuong Pham-Huu 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).

  • Production of heavy metal carbides of high specific surface area
    Patent number: 5308597
    Abstract: A method of producing heavy metal carbides of high specific surface area characterized in that a compound in the gazeous state of said heavy metal is caused to react with reactive carbon having a specific surface area at least equal to 200 m.sup.2. g.sup.-1 at a temperature comprised between 900.degree. and 1400.degree. C., and thus obtained carbides.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: May 3, 1994
    Assignee: Pechiney Electrometallurgie
    Inventors: Marc-Jacques Ledoux, Jean-Louis Guille, Cuong Pham-Huu, Sophie Marin
  • Process for activating the surface of carbides of heavy metals with a large specific surface for catalytic reactions
    Patent number: 5139987
    Abstract: Process for activating carbides of heavy metals with a large specific surface with a view to their use as a catalyst for chemical or petrochemical reactions consisting of treating the said carbides by managed oxidation under an oxidizing gas stream at a temperature between 250.degree. and 450.degree. C., maintaining the temperature for at least 3 hours and then cooling to ambient temperature, still under said oxidizing stream.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: August 18, 1992
    Assignee: Pechiney Recherche
    Inventors: Marc-Jacques Ledoux, Jean-Louis Guille, Cuong Pham-Huu, Sophie Marin