Patents by Inventor Guillermo Zertuche

Guillermo Zertuche 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 and apparatus for extruding tubular articles having several conduits
    Patent number: 4655987
    Abstract: The invention relates to the manner of extruding multi-conduit pipes. A novel nozzle and a related method are disclosed whereby the extrusion of a pipe having multiple inner lengthwise subdivisions is made possible.
    Type: Grant
    Filed: October 12, 1982
    Date of Patent: April 7, 1987
    Inventor: Guillermo Zertuche