Patents by Inventor Eric De Maigret

Eric De Maigret 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).

  • Device for protecting a female end of a threaded tubular connection component, having an anti-unscrewing brake
    Patent number: 9206930
    Abstract: A device configured to protect a female end of a component of a threaded tubular connection for drilling and working a hydrocarbon well, including an internal threading, an annular end, and internal surfaces respectively upstream and downstream of the internal threading and respectively having first and second selected orientations. The device includes a body including an external threading to cooperate with the internal threading and first and second flexible annular sealing elements respectively upstream and downstream of the external threading to provide first and second seals respectively at the internal and end annular surfaces.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: December 8, 2015
    Assignees: VALLOUREC OIL AND GAS FRANCE, VALLOUREC OIL & GAS MEXICO, SA DE CV
    Inventors: Sebastien Courtois, Roque Pineda, Erwan Cadiou, Eric De Maigret
  • DEVICE FOR PROTECTING A FEMALE END OF A THREADED TUBULAR CONNECTION COMPONENT, HAVING AN ANTI-UNSCREWING BRAKE
    Publication number: 20110148103
    Abstract: A device configured to protect a female end of a component of a threaded tubular connection for drilling and working a hydrocarbon well, including an internal threading, annular end, and internal surfaces respectively upstream and downstream of the internal threading and respectively having first and second selected orientations. The device includes a body including an external threading to cooperate with the internal threading and first and second flexible annular type sealing elements respectively upstream and downstream of the external threading to provide first and second seals respectively at the internal and end annular surfaces.
    Type: Application
    Filed: February 14, 2008
    Publication date: June 23, 2011
    Applicants: VALLOUREC MANNESMANN OIL & GAS FRANCE, VAM MEXICO SA DE CV
    Inventors: Sebastien Courtois, Pineda Roque Velazquez, Erwan Cadiou, Eric De Maigret