Patents by Inventor Christian Trombert

Christian Trombert 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
  • Resulfurized austenitic stainless steel
    Patent number: 6485680
    Abstract: Resulfurized stainless steel with high machinability and having an improved corrosion resistance, which includes, in its composition, anorthite- and/or pseudo-wollastonite- and/or gehlenite-type lime aluminosilicate inclusions combined with CrMnS inclusions, the chromium content of which is between 30% and 70%.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: November 26, 2002
    Assignee: Ugine-Savoie Imphy
    Inventors: Jean Ragot, Jean-Michel Hauser, Christian Trombert
  • Resulfurized austenitic stainless steel
    Publication number: 20010046449
    Abstract: Resulfurized stainless steel with high machinability and having an improved corrosion resistance, which includes, in its composition, anorthite- and/or pseudo-wollastonite- and/or gehlenite-type lime aluminosilicate inclusions combined with CrMnS inclusions, the chromium content of which is between 30% and 70%.
    Type: Application
    Filed: March 5, 2001
    Publication date: November 29, 2001
    Applicant: UGINE-SAVOIE IMPHY
    Inventors: Jean Ragot, Jean-Michel Hauser, Christian Trombert