Patents by Inventor Herve Marchebois

Herve Marchebois 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).

  • Low-alloy steel having a high yield strength and a high sulphide-induced stress cracking resistance
    Patent number: 9273383
    Abstract: A steel contains, by weight: C: 0.3% to 0.5%, Si: 0.1% to 0.5%, Mn: 1% or less, P: 0.03% or less, S: 0.005% or less, Cr: 0.3% to 1%, Mo: 1% to 2%, W: 0.3% to 1%, V: 0.03% to 0.25%, Nb: 0.01% to 0.15%, Al: 0.01% to 0.1%, the remainder of the chemical composition of the steel being constituted by Fe and impurities or residuals resulting from or necessary to steel production and casting processes. The steel can be used to produce seamless tubes for hydrocarbon wells with a yield strength after heat treatment of 862 MPa or more or even 965 MPa or more.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: March 1, 2016
    Assignee: VALLOUREC OIL AND GAS FRANCE
    Inventors: Laurent Delattre, Herve Marchebois, Michel Piette, Christoph Bosch, Michaela Hoerstemeier, Joachim Konrad
  • LOW-ALLOY STEEL HAVING A HIGH YIELD STRENGTH AND A HIGH SULPHIDE-INDUCED STRESS CRACKING RESISTANCE
    Publication number: 20130061988
    Abstract: A steel contains, by weight: C: 0.3% to 0.5%, Si: 0.1% to 0.5%, Mn: 1% or less, P: 0.03% or less, S: 0.005% or less, Cr: 0.3% to 1%, Mo: 1% to 2%, W: 0.3% to 1%, V: 0.03% to 0.25%, Nb: 0.01% to 0.15%, Al: 0.01% to 0.1%, the remainder of the chemical composition of the steel being constituted by Fe and impurities or residuals resulting from or necessary to steel production and casting processes. The steel can be used to produce seamless tubes for hydrocarbon wells with a yield strength after heat treatment of 862 MPa or more or even 965 MPa or more.
    Type: Application
    Filed: May 19, 2011
    Publication date: March 14, 2013
    Applicant: VALLOUREC MANNESMANN OIL & GAS FRANCE
    Inventors: Laurent Delattre, Herve Marchebois, Michel Piette, Christoph Bosch, Michaela Hoerstemeier, Joachim Konrad