Patents by Inventor Stefan DOBRE

Stefan DOBRE 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 connecting two individual elements of an underwater fluid-transport pipe subject to fatigue
    Patent number: 11407052
    Abstract: A method of connecting together two unit elements (2, 4) of an undersea fluid transport pipe that is subjected to fatigue, by welding together two metallic or bi-metallic unit pipe elements that have been put into abutment via their respective free ends (2a, 4a), the welding being done by making three distinct weld beads (6, 8, 10), with a last weld bead (8) being deposited between two lateral first weld beads (6, 10), and being followed directly by controlled sanding of the weld beads in order to apply compression stresses on them.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: August 9, 2022
    Assignee: SAIPEM S.A.
    Inventors: Rachid Yousfi, Stefan Dobre
  • Method For Connecting Two Individual Elements Of An Underwater Fluid-Transport Pipe Subject To Fatigue
    Publication number: 20190247945
    Abstract: A method of connecting together two unit elements (2, 4) of an undersea fluid transport pipe that is subjected to fatigue, by welding together two metallic or bi-metallic unit pipe elements that have been put into abutment via their respective free ends (2a, 4a), the welding being done by making three distinct weld beads (6, 8, 10), with a last weld bead (8) being deposited between two lateral first weld beads (6, 10), and being followed directly by controlled sanding of the weld beads in order to apply compression stresses on them.
    Type: Application
    Filed: June 20, 2017
    Publication date: August 15, 2019
    Inventors: Rachid YOUSFI, Stefan DOBRE