Patents by Inventor Lionel Coudreuse

Lionel Coudreuse 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).

  • Hot rolled plate or forging of an austenitic steel
    Patent number: 11884997
    Abstract: A hot rolled plate or forging of an austenitic steel not susceptible to relaxation cracking is provided. The hot rolled plate or austenitic steel includes a composition having in percentages by weight: 0.019%?C?0.030%, 0.5%?Mn?2%, 0.1%?Si?0.75%, Al?0.25%, 18%?Cr?25%, 14%?Ni?17%, 1.5%?Mo?3%, 0.001%?B?0.008%, 0.25%?V?0.35%, 0.23%?N?0.27%, the balance being iron and unavoidable impurities, Ni(eq.)?1.11 Cr(eq.)?8.24, Cr(eq)=Cr+Mo+1.5Si+5V+3Al+0.02, Ni(eq)=Ni+30C+x(N?0.045)+0.87; x=30 for N?0.2, x=22 for 0.2<N?0.25, x=20 for 0.25<N?0.35.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: January 30, 2024
    Assignee: ArcelorMittal
    Inventors: Bernard Bonnefois, Amelie Fanica, Lionel Coudreuse, Tassa Oriana, Johannes Cornelis Van Wortel
  • HOT ROLLED PLATE OR FORGING OF AN AUSTENITIC STEEL
    Publication number: 20230040035
    Abstract: A hot rolled plate or forging of an austenitic steel not susceptible to relaxation cracking is provided. The hot rolled plate or austenitic steel includes a composition having in percentages by weight: 0.019%?C?0.030%, 0.5%?Mn?2%, 0.1%?Si?0.75%, Al?0.25%, 18%?Cr?25%, 14%?Ni?17%, 1.5%?Mo?3%, 0.001%?B<0.008%, 0.25%?V?0.35%, 0.23%?N?0.27%, the balance being iron and unavoidable impurities, Ni(eq.)?1.11 Cr(eq.)?8.24, Cr(eq)=Cr+Mo+1.5Si+5V+3Al+0.02, Ni(eq)=Ni+30C+x(N?0.045)+0.87; x=30 for N?0.2, x=22 for 0.2<N?0.25, x=20 for 0.25<N?0.35.
    Type: Application
    Filed: March 21, 2022
    Publication date: February 9, 2023
    Inventors: Bernard Bonnefois, Amelie Fanica, Lionel Coudreuse, Tassa Oriana, Johannes Cornelis Van Wortel
  • Hot Rolled Plate or Forging of an Austenitic Steel
    Publication number: 20180274067
    Abstract: A hot rolled plate or forging of an austenitic steel not susceptible to relaxation cracking is provided. The hot rolled plate or austenitic steel includes a composition having in percentages by weight: 0.019%?C?0.030%, 0.5%?Mn?2%, 0.1%?Si?0.75%, Al?0.25%, 18%?Cr?25%, 14%?Ni?17%, 1.5%?Mo?3%, 0.001%?B?0.008%, 0.25%?V?0.35%, 0.23%?N?0.27%, the balance being iron and unavoidable impurities, Ni(eq.)?1.11 Cr(eq.)?8.24, Cr(eq)=Cr+Mo+1.5Si+5V+3Al+0.02, Ni(eq)=Ni+30C+x(N?0.045)+0.87; x=30 for N?0.2, x=22 for 0.2<N?0.25, x=20 for 0.25<N?0.35.
    Type: Application
    Filed: May 29, 2018
    Publication date: September 27, 2018
    Inventors: Bernard Bonnefois, Amelie Fanica, Lionel Coudreuse, Tassa Oriana, Johannes Cornelis Van Wortel
  • HEAT-RESISTANT AUSTENITIC STEEL HAVING HIGH RESISTANCE TO STRESS RELAXATION CRACKING
    Publication number: 20120237389
    Abstract: An austenitic steel not susceptible to relaxation cracking, with composition comprising, in percentages by weight: 0.019% ?C ?0.030%, 0.5% ?Mn ?2%, 0.1% ?Si ?0.75%, Al >0.25%, 18% ?Cr ?25%, 12% ?Ni ?20%, 1.5% ?Mo ?3%, 0.001 % <B ?0.008%, 0.25% ?V ?0.35%, 0.23% ?N ?0.27%, the balance being iron and unavoidable impurities wherein: Ni(eq.) ?1.11 Cr(eq.) ?8.24, wherein: Cr(eq)=Cr+Mo+1.5 Si+5V+3AI+0.02, Ni(eq)=Ni+30C+x(N?0.045)+0.87 wherein: x=30 for N?0.2, x=22 for 0.2<N?0.25, x=20 for 0.25<N?0.35.
    Type: Application
    Filed: July 20, 2010
    Publication date: September 20, 2012
    Applicants: ArcelorMittal Investigacion y Desarrollo SL, Netherlands Org. for Applied Sci. Research (TNO), Centro Sviluppo Materiali S.P.A.
    Inventors: Bernard Bonnefois, Amelie Fanica, Lionel Coudreuse, Tassa Oriana, Johannes Cornelis Van Wortel
  • Process for using agent for improving the hydrogen cracking resistance of low or intermediate-alloy steels, and pieces obtained
    Patent number: 5221374
    Abstract: The agent in question is cobalt added in contents of between 0.05% and 2% to steels containing from 0.05% to 0.6% of carbon and less than 10% of alloying elements taken from silicon, manganese, nickel, chromium and molybdenum, to produce optionally normalized blocks, plates, bars or pieces of large size, with improved hydrogen cracking resistance and with improved weld-ability and suitability for thermal cutting. The invention also relates to a process for employing the agent and to the pieces thus obtained.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: June 22, 1993
    Assignee: Creusot Loire Industrie
    Inventors: Regis Blondeau, Jean Beguinot, Philippe Bourges, Lionel Coudreuse, Gilbert Primon, Jacques Charles