Patents by Inventor Frederic Descaves

Frederic Descaves 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: 6739383
    Abstract: The invention concerns a method for continuously casting an austenitic stainless steel strip with a thickness not more than 10 mm, directly from liquid metal, between two cooled horizontal rolls, characterised in that: said steel composition in weight proportions comprises: %C≦0.08%; %Si≦1; %P≦0.04; %Mn≦2; %Cr between 17 and 20; %Ni between 8 and 10.5; %S between 0.007 and 0.040; the rest being iron and the impurities resulting from preparation; the ratio Creq/Nieq ranges between 1.55 and 1.90 with: Creq(%)=%Cr+1.37 %Mo+1.5 %Si+2%Nb+3 %Ti; Nieq(%)=%Ni+0.31 %Mn+22 %C+14.2 %N+Cu; the surface of the rolls comprises contiguous dimples with more or less circular or elliptical cross-section, of diameter between 100 and 1500 &mgr;m and depth between 20 and 150 &mgr;m; the inerting gas surrounding the meniscus is a gas soluble in steel or a mixture of such gases, or consists of at least 50% by volume of such a gas or mixture of gases.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: May 25, 2004
    Assignee: Usinor
    Inventors: Christian Marchionni, Frédéric Mazurier, Jean-Michel Damasse, Frédéric Descaves
  • Patent number: 6228137
    Abstract: A process for producing a foaming slag above a stainless steel melted in an electric furnace, in which: a powder containing at least one metal oxide and carbon in its composition is introduced into the slag, at least one oxide present in the powder is reduced by its reaction with the carbon to form in the slag bubbles composed of the metal of the metal oxide and of carbon monoxide, the bubbles present in the slag giving rise to a slag in the form of a stable foam.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: May 8, 2001
    Assignees: Ugine-Savoie Imphy, Ugine SA
    Inventors: Yves Guillot, Luc Sollier, Olivier Bletton, Frederic Descaves
  • Patent number: 6092700
    Abstract: The subject of the invention is a nozzle (1) for introducing a liquid metal into a mold for the continuous casting of metals, of the type comprising a tubular first part (2), one end of which is intended to be connected to a vessel containing said liquid metal and the other end of which emerges in a hollow second part (4) of elongate shape, at least one portion of the internal space (3) of which is oriented approximately perpendicular to said tubular first part (2), said hollow part (4) having an outlet (5, 6) at each of its ends, as well as one or more outlet orifices (7-17) provided in its bottom (18) and/or its lateral walls, a bar provided with holes (22, 22', 23-34) being placed in the internal space (3) of said hollow part (4) so that the liquid metal necessarily passes via said holes (22, 22', 23-34) before passing through said outlet orifices (7-17), wherein said bar (19, 38, 39, 41, 43) includes, on at least one portion of the width of its upper face, a raised part (20, 37, 42, 44) whose top lies alo
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: July 25, 2000
    Assignees: Usinor, Vesuvius France
    Inventors: Fabienne Orihel, Bernard Goncalves, Laurent Gacher, Frederic Descaves, Johan Richaud
  • Patent number: 5651937
    Abstract: Austenitic stainless steel for the production of wire, which can be used in the field of drawing to a diameter of less than 0.3 mm and in the field of producing parts subjected to wear.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: July 29, 1997
    Assignee: Ugine Savoie (Societe Anonyme)
    Inventor: Frederic Descaves