Patents by Inventor Hubert MULIN

Hubert MULIN 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 pressure carbonitriding method and furnace
    Patent number: 11242594
    Abstract: A method for carbonitriding of a steel part arranged in a chamber comprises first steps and second steps, a carburizing gas being injected into the chamber during the first steps only and a nitriding gas being injected into the chamber during the second steps only, at least one of the second steps being situated between two first steps, the pressure in the chamber during at least one part of said two first steps being maintained at a first value and the pressure in the chamber during at least one part of said second step situated between said two first steps being at a second value that is strictly greater than the first value.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: February 8, 2022
    Assignee: ECM TECHNOLOGIES
    Inventors: Yves Giraud, Hubert Mulin
  • LOW PRESSURE CARBONITRIDING METHOD AND FURNACE
    Publication number: 20170356077
    Abstract: A method for carbonitriding of a steel part arranged in a chamber comprises first steps and second steps, a carburizing gas being injected into the chamber during the first steps only and a nitriding gas being injected into the chamber during the second steps only, at least one of the second steps being situated between two first steps, the pressure in the chamber during at least one part of said two first steps being maintained at a first value and the pressure in the chamber during at least one part of said second step situated between said two first steps being at a second value that is strictly greater than the first value.
    Type: Application
    Filed: December 10, 2015
    Publication date: December 14, 2017
    Applicant: ECM TECHNOLOGIES
    Inventors: Yves GIRAUD, Hubert MULIN