Patents by Inventor Willem Maarten VAN HAAFTEN

Willem Maarten VAN HAAFTEN 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 QUALIFICATION TESTING OF A TUBULAR CONNECTOR
    Publication number: 20170097233
    Abstract: The invention provides a method of selecting a threaded tubular connector for qualification testing, the method comprising the steps of providing a test specimen (34) provided with a test surface that exhibits comparable material properties and/or surface topology as the sealing surface on the connector, determining a parameter of the test surface relating to the sealing capability of the sealing surface; subjecting the test surface to a load, the load corresponding to a selected phase of a qualification test procedure for the tubular connector; removing the load; determining a variation of the parameter; and ceasing the qualification test procedure if the variation of the parameter indicates a reduction of the sealing capability of the sealing surfaces.
    Type: Application
    Filed: May 20, 2014
    Publication date: April 6, 2017
    Inventors: Mark Michael SHUSTER, Djurre Hans ZIJSLING, Egbert Jan VAN RIET, Henry Rihard PASARIBU, Willem Maarten VAN HAAFTEN