Patents by Inventor Marco A. Herrera-Garcia

Marco A. Herrera-Garcia 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).

  • Patent number: 5218617
    Abstract: A method and apparatus for feeding iron-bearing particles into a metallurgical furnace such as an electric arc furnace, comprising a vessel for containing a bath of molten iron, having a wall extending above the bath of molten iron, a preferably screw type feeder mounted on the exterior of the vessel, a feeding port in the vessel wall shaped to permit passage of the feeder into the interior of the bath of vessel and located at such a height from the molten iron so that no molten materials will spill out from the furnace through the port during the normal operation and maneuvering of the furnace; and actuating means for extending the screw type feeder from a retracted position out of the vessel to an extended position into the vessel.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: June 8, 1993
    Assignee: Hylsa S.A. de C.V.
    Inventors: Marco A. Herrera-Garcia, Rodolfo A. de la Garza Villarreal