Patents by Inventor Bernard Tetu

Bernard Tetu 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).

  • Sulphur-containing ferritic stainless steel that can be used for ferromagnetic parts
    Patent number: 6921511
    Abstract: Ferritic stainless steel that can be used for ferromagnetic parts, characterized in that it comprises in its composition by weight: C?0.030% 1.0%<Si?3% 0.1%<Mn?0.5% 10%?Cr?13% 0%<Ni<1% 0.03%<S<0.5% 0%<P?0.030% 0.2%<Mo?2% 0%<Cu?0.5% 0%<N?0.030% 0%<Ti?0.5% 0%<Nb?1% 0%<Al?100×10?4% 30×10?4%<Ca?100×10?4% 50×10?4%<O?150×10?4% the ratio of the calcium content to the oxygen content Ca/O being 0.3?Ca/O?1, the balance being ion and the inevitable impurities from the smelting of the steel, and a process for manufacturing ferromagnetic parts.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: July 26, 2005
    Assignee: UGITECH
    Inventors: Christophe Bourgin, Danièle Cereda, Marie-Claude Orlandi, Benoît Pollet, Bernard Tetu, Christian Trombert, Corinne Viguet-Carrin
  • Sulphur-containing ferritic stainless steel that can be used for ferromagnetic parts
    Publication number: 20030121575
    Abstract: Ferritic stainless steel that can be used for ferromagnetic parts, characterized in that it comprises in its composition by weight:
    Type: Application
    Filed: November 25, 2002
    Publication date: July 3, 2003
    Applicant: USINOR
    Inventors: Christophe Bourgin, Daniele Cereda, Marie-Claude Orlandi, Benoit Pollet, Bernard Tetu, Christian Trombert, Corinne Viguet-Carrin
  • Installation for making cold rolled stainless steel bands
    Patent number: 6478899
    Abstract: A stainless steel band is continuously cast. The stainless steel band is descaled and cold rolled. The cold rolled band is annealed and descaled or bright annealed. The band is finish formed and finally coiled. The stainless steel band is not coiled after being continuously cast and before being finally coiled.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: November 12, 2002
    Assignee: Ugine S.A.
    Inventors: Hugues Legrand, Luc Vendeville, Jean Veyer, Francis Chassagne, Jean-Michel Damasse, Yann Breviere, Henri Giraud, Jean-Pierre Malingriaux, Michel Ternisien, Bernard Tetu, Bernard Vialatte
  • Process for the continuous production of a rolled stainless steel sheet strip and continuous production line for carrying out the process
    Patent number: 5820704
    Abstract: Process for continuously producing on a production line a rolled stainless steel sheet product having an improved surface state, characterized in that the hot produced sheet is subjected to a treatment comprising at least:a primary pickling for removing scale,cold rolling in at the most three rolling passes,a final annealing,a final pickling, anda cold rolling of the "skin pass" type.There is optionally effected, before the primary pickling, a stretcher levelling which produces a residual elongation of 1 to 5% for cracking the layer of oxide and rendering the sheet planar. Apparatus for carrying out the invention process is also described.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: October 13, 1998
    Assignee: Usinor Sacilor
    Inventors: Jean Veyer, Jean-Pierre Malingriaux, Michel Ternisien, Henri Giraud, Joel Tagalian, Bernard Vialatte, Bernard Tetu