Patents by Inventor Frederick Zeyfang

Frederick Zeyfang 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).

  • Liquid vinyl injection molding method and apparatus
    Publication number: 20070120295
    Abstract: A method is provided for the formation of a molded article comprising the steps of: providing at least one liquid plastisol composition, providing an injection molding apparatus including an injection barrel, feeding the at least one liquid plastisol composition to the injection barrel, heating the at least one plastisol composition within the injection barrel to the fusion temperature of the plastisol, and injecting the at least one plastisol composition to the mold.
    Type: Application
    Filed: June 3, 2005
    Publication date: May 31, 2007
    Applicant: Caplugs LLC
    Inventors: Frederick Zeyfang, Timothy Chase, John Meidenbauer
  • Center pull tab plug with sealing flange
    Publication number: 20060278653
    Abstract: A center pull tab sealing plug for sealing a hole in a structural member is provided, comprising a base element having top and bottom portions; a flexible flange extending from a periphery of the base element, the flange including at least one annular ridge or O-ring extending downwardly from a bottom surface of the flange and spaced from a side wall of the base element; and a pull tab extending upwardly from the top portion of the base element a distance sufficient to provide a gripping surface.
    Type: Application
    Filed: June 8, 2005
    Publication date: December 14, 2006
    Inventors: Frederick Zeyfang, Darrel Caselli