Patents by Inventor Laurent Antoni

Laurent Antoni 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).

  • Niobium-stabilized 14% chromium ferritic steel, and use of same in the automobile sector
    Patent number: 6921440
    Abstract: A process for production of sheet-metal strip of niobium-stabilized 14% chromium ferritic steel, characterized in that certain steel is subjected to: cold rolling of the hot sheet metal with or without preliminary annealing, final annealing of the sheet-metal strip at a temperature of between 800° C. and 1100° C. for a duration of between 1 minute and 5 minutes and preferably at a temperature of about 1050° C. for a time of about 2 minutes. Steel and exhaust manifold.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: July 26, 2005
    Assignee: Ugine SA
    Inventors: Silke Liesert, Laurent Antoni, Pierre Olivier Santacreu
  • Use of austenitic stainless steels in applications requiring anti-coking properties
    Patent number: 6824672
    Abstract: An austenitic stainless steel with a composition comprising: at most 0.15% of C; 2% to 10% of Mn; at most 2% of Ni; at most 4% of Cu; 0.1% to 0.4% of N; 10% to 20% of Cr; at most 1% of Si; at most 3% of Mo; and at most 0.7% of Ti; is used to manufacture equipment, for example furnaces, reactors or ducts, or elements of this equipment, or to coat the internal walls of this equipment, said equipment being used to implement petrochemical processes conducted at temperatures of 350° C. to 1100° C. and in which coke can be formed.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: November 30, 2004
    Assignees: Institute Francais du Petrole, USINOR
    Inventors: Philippe Lecour, Xavier Longaygue, François Ropital, Laurent Antoni
  • Coated ferrite stainless steel sheet usable in the automobile exhaust sector
    Patent number: 6582835
    Abstract: Dip-coated ferrite stainless steel sheet usable in the automobile exhaust sector, characterized in that it comprises a steel core with the following composition by weight: 10.5%≦chromium≦20% 0%≦aluminum≦0.6% 0.003%≦carbon≦0.06% 0.003%≦nitrogen≦0.04% 0%≦silicon≦0.6% 0%≦manganese≦0.6% 0%≦sulfur≦0.002% iron and impurities inherent in processing, and a metal coating deposited by dipping the strip in a molten metal bath containing in particular aluminum and at least one rare earth element: cerium, lanthanum, praseodymium, neodymium, mixed metal and/or yttrium.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: June 24, 2003
    Assignee: Usinor
    Inventors: Laurent Antoni, Raphael Craen
  • Niobium-stabilized 14% chromium ferritic steel, and use of same in the automobile sector
    Publication number: 20020129877
    Abstract: A process for production of sheet-metal strip of niobium-stabilized 14% chromium ferritic steel, characterized in that certain steel is subjected to:
    Type: Application
    Filed: March 14, 2002
    Publication date: September 19, 2002
    Applicant: UGINE SA
    Inventors: Silke Liesert, Laurent Antoni, Pierre Olivier Santacreu
  • Use of austenitic stainless steels in applications requiring anti-coking properties
    Publication number: 20020129876
    Abstract: An austenitic stainless steel with a composition comprising:
    Type: Application
    Filed: January 15, 2002
    Publication date: September 19, 2002
    Applicant: Institut Francais du Petrole
    Inventors: Philippe Lecour, Xavier Longaygue, Francois Ropital, Laurent Antoni
  • Niobium-stabilized 14% chromium ferritic steel, and use of same in the automobile sector
    Patent number: 6423159
    Abstract: A process for production of sheet-metal strip of niobium-stabilized 14% chromium ferritic steel, characterized in that certain steel is subjected to: cold rolling of the hot sheet metal with or without preliminary annealing, final annealing of the sheet-metal strip at a temperature of between 800° C. and 1100° C. for a duration of between minute and 5 minutes and preferably at a temperature of about 1050° C. for a time of about 2 minutes. Steel and exhaust manifold.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: July 23, 2002
    Assignee: Ugine SA
    Inventors: Silke Liesert, Laurent Antoni, Pierre Olivier Santacreu
  • Coated ferrite stainless steel sheet usable in the automobile exhaust sector
    Publication number: 20010032687
    Abstract: Dip-coated ferrite stainless steel sheet usable in the automobile exhaust sector, characterized in that it comprises a steel core with the following composition by weight:
    Type: Application
    Filed: March 29, 2001
    Publication date: October 25, 2001
    Inventors: Laurent Antoni, Raphael Craen