Patents by Inventor Carlos Alberto D. C. Goncalves

Carlos Alberto D. C. Goncalves 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).

  • Process of electric pipeline heating utilizing heating elements inserted in pipelines
    Patent number: 5182792
    Abstract: A process to clear pipelines carrying fluids viscous and/or rich in organic residues includes the introduction of a heating element inside a pipeline carrying the fluids through a coupling spool which is intercalated in the fluid-carrying pipeline. Simultaneously an electric current is applied to the heating element so that the heat generated by the heating element is transmitted to the viscous fluid or to the compacted residual mass inside the fluid-carrying pipeline, causing the detachment of those residues from the internal wall of the pipeline and re-establishing the conditions for fluid flow.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: January 26, 1993
    Assignee: Petroleo Brasileiro S.A. - Petrobras
    Inventor: Carlos Alberto D. C. Goncalves