Patents by Inventor Fran.cedilla.ois Ropital

Fran.cedilla.ois Ropital 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: 5922149
    Abstract: A method for making steel wires, wherein an elongate shaped wire is produced by rolling or drawing steel consisting of 0.05-0.5% C, 0.4-1.5% Mn, 0-2.5% Cr, 0.1-0.6% Si, 0-1% Mo, no more than 0.25% Ni, and no more than 0.02% S and P, and a first heat treatment is performed on the shaped wire, including at least one step of quenching under predetermined conditions to achieve an HRC hardness of at least 32, a predominately martensitic and bainitic steel structure and a small amount of ferrite. A shaped wire and a flexible tube for conveying an H.sub.2 S-containing effluent are disclosed.
    Type: Grant
    Filed: November 4, 1997
    Date of Patent: July 13, 1999
    Assignees: Institut Francais du Petrole, Coflexip
    Inventors: Jose Mallen Herrero, Fran.cedilla.ois Ropital, Andre Sugier
  • Patent number: 5693155
    Abstract: For diminishing coking in a petrochemical process, coking-resistant steel containing by weight:about 0.05% to 0.06% of carbon;about 2.5% to 5% of silicon;10% to 20% of chromium;10% to 15% of nickel0.5% to 1.5% of manganese;0-0.5% of titanium;at most 0.8% of aluminium;the complement to 100% being essentially iron,can be used to manufacture tubes and plates for producing reactors or elements thereof, as well as for coatings of the internal walls of furnaces, reactors or tubings where coking can occur.
    Type: Grant
    Filed: December 20, 1995
    Date of Patent: December 2, 1997
    Assignee: Institut Francais du Petrole
    Inventors: Valerie Mousseaux, Fran.cedilla.ois Ropital, Andre Sugier