Patents by Inventor Mahrez KHOUJA

Mahrez KHOUJA 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).

  • High tensile and high toughness steels
    Patent number: 11761051
    Abstract: The present invention deals with alloyed steels having yield strength of at least 862 MPa (125 Ksi) and exhibiting outstanding hardness and toughness behavior, especially under stringent conditions which may be subjected to frost-heave and thaw settlement cycles, namely at subzero temperatures. The invention also relates to a seamless pipe comprising said steel and a method of production of said pipe thereof.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: September 19, 2023
    Assignee: VALLOUREC DEUTSCHLAND GmbH
    Inventors: Mahrez Khouja, Bernhard Koschlig, Ralf Hojda
  • HIGH TENSILE AND HIGH TOUGHNESS STEELS
    Publication number: 20210032715
    Abstract: The present invention deals with alloyed steels having yield strength of at least 862 MPa (125 Ksi) and exhibiting outstanding hardness and toughness behavior, especially under stringent conditions which may be subjected to frost-heave and thaw settlement cycles, namely at subzero temperatures. The invention also relates to a seamless pipe comprising said steel and a method of production of said pipe thereof.
    Type: Application
    Filed: February 22, 2019
    Publication date: February 4, 2021
    Applicant: VALLOUREC DEUTSCHLAND GmbH
    Inventors: Mahrez KHOUJA, Bernhard KOSCHLIG, Ralf HOJDA