Patents by Inventor Djarollah Oquab

Djarollah Oquab 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).

  • Deposition process of a ceramic coating on a metallic substrate
    Patent number: 5302422
    Abstract: The object of the present invention is a deposition process of a coating of the ceramic type based on carbides, nitrides, or carbonitrides of metallic elements such as Cr, V, Zr, W, Mo, Co, Mn, Ni, Hf, Ta, Ti, Nb and Fe in which the coating of the ceramic type is deposited at low temperature in the vapour phase on a metallic substrate from organo-metallic precursors wherein, prior to this deposition in the vapour phase and without subsequent placing in contact with an oxidizing and/or polluting atmosphere, a reactive ionic pickling is carried out in a reducing atmosphere.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: April 12, 1994
    Assignees: Nitruvid, C3F (Compagnie Francaise de Forges et Fonderies)
    Inventors: Jean-Francois Nowak, Francis Maury, Djarollah Oquab, Roland Morancho