Patents by Inventor André Marcarie

André Marcarie 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).

  • Method for low-pressure carburizing of a workpiece comprising steel
    Patent number: 11293087
    Abstract: A method for carburizing a steel workpiece includes implementing between 1 and 30 consecutive carburizing cycles, each carburizing cycle including injecting carburizing gas in such a way as to increase the surface carbon rate until a predetermined higher rate is reached, a step of injecting a neutral gas so as to decrease the surface carbon rate of the workpiece until it reaches a predetermined lower rate, followed by a second phase of injection of the neutral gas.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: April 5, 2022
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Bruno Petroix, André Marcarie
  • METHOD FOR LOW-PRESSURE CARBURIZING OF A WORKPIECE COMPRISING STEEL
    Publication number: 20210230732
    Abstract: A method for carburizing a steel workpiece includes implementing between 1 and 30 consecutive carburizing cycles, each carburizing cycle including injecting carburizing gas in such a way as to increase the surface carbon rate until a predetermined higher rate is reached, a step of injecting a neutral gas so as to decrease the surface carbon rate of the workpiece until it reaches a predetermined lower rate, followed by a second phase of injection of the neutral gas.
    Type: Application
    Filed: June 5, 2019
    Publication date: July 29, 2021
    Applicant: SAFRAN HELICOPTER ENGINES
    Inventors: Bruno Petroix, André Marcarie