Patents by Inventor Yann Le Papillon

Yann Le Papillon 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: 7374623
    Abstract: A metallurgical product, made of carbon steel and to be galvanized, which is in the form of a strip or of a sheet obtained from a continuously cast intermediate product having the following composition by weight: 0.0005%?C?0.15%; 0.08%?Mn?2%; Si?0.040%; Altotal?0.010%; Alsoluable?0.004%; 0.0050%?Ototal?0.0500%; P?0.20%; S?0.10%; each of Cu, Cr, Ni, Mo, W, Co?1%; each of Ti, Nb, V, Zr?0.5%; each of Sn, Sb, As?0.1%; B?0.1%; N?0.0400%; and the remainder being iron and impurities. Also, a process for obtaining a metallurgical intermediate product, which includes: producing in a ladle a liquid steel the composition of which is as above, and in which the dissolved oxygen content is maintained between 0.0050 and 0.0500% by the establishment of a chemical equilibrium between the metal and the ladle slag; and casting the steel on a continuous casting machine.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: May 20, 2008
    Assignee: USINOR
    Inventors: Christian Marchionni, Yann Le Papillon, Alain Leclercq, Michel Faral, Jean-Michel Damasse, Philippe Rocabois
  • Publication number: 20030116232
    Abstract: A metallurgical product, made of carbon steel and to be galvanized, which is in the form of a strip or of a sheet obtained from a continuously cast intermediate product having the following composition by weight: 0.0005%≦C≦0.15%; 0.08%≦Mn≦2%; Si≦0.040%; Altotal≦0.010%; Alsoluble≦0.004%; 0.0050%≦Ototal≦0.0500%; P≦0.20%; S≦0.10%; each of Cu, Cr, Ni, Mo, W, Co≦1%; each of Ti, Nb, V, Zr≦0.5%; each of Sn, Sb, As≦0.1%; B≦0.1%; N≦0.0400%; and the remainder being iron and impurities. Also, a process for obtaining a metallurgical intermediate product, which includes: producing in a ladle a liquid steel the composition of which is as above, and in which the dissolved oxygen content is maintained between 0.0050 and 0.0500% by the establishment of a chemical equilibrium between the metal and the ladle slag; and casting said steel on a continuous casting machine.
    Type: Application
    Filed: December 20, 2002
    Publication date: June 26, 2003
    Applicant: USINOR
    Inventors: Christian Marchionni, Yann Le Papillon, Alain Leclercq, Michel Faral, Jean-Michel Damasse, Philippe Rocabois