Patents by Inventor Roberto Del Callejo Vargas

Roberto Del Callejo Vargas 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).

  • GROOVE GEOMETRY FOR INJECTION MOLDED POLYPROPYLENE COATED FIELD JOINTS
    Publication number: 20200282677
    Abstract: In an injection molded polypropylene field joint of an oil or gas pipeline, the three- dimensional geometry of the injection molded/cast coating can have an influence on the stress placed on the line coating during cooling. Specifically, it has been found that molding or casting a coating having circumferential grooves, or other groove geometry, proximal to the interface with the line coating, will reduce line coating failure proximal to the field joint, in particular line coating failure related to the initial spooling/reeling of the pipe.
    Type: Application
    Filed: October 5, 2017
    Publication date: September 10, 2020
    Applicant: SHAWCOR LTD.
    Inventors: Pablo Wiesemann, Roberto Del Callejo Vargas, Corentin Lazarus, Magne Skinstad, Craig Sloan, Alexandra Sperber, Marcos Mockel