Patents by Inventor Otto Rulle

Otto Rulle 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).

  • Apparatus for the extrusion of patterned sheets of thermoplastic synthetic resins
    Patent number: 4185951
    Abstract: A process for the extrusion of patterned sheets of thermoplastic synthetic resins wherein a transparent basic synthetic resin material is combined with at least one differently colored secondary synthetic resin material, and wherein the combined stream of material made up of the basic material and the secondary material flows, during the extrusion, at least in partial zones at right angles to the extrusion flow direction, based on the flow cross section, is disclosed.
    Type: Grant
    Filed: May 10, 1977
    Date of Patent: January 29, 1980
    Assignee: Dynamit Nobel AG
    Inventors: Kurt Webermeier, Waldemar Wissinger, Otto Rulle