Patents by Inventor Andre T. Votte

Andre T. Votte 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).

  • Synthetic roofing elements of the slate type and a method of manufacturing same
    Patent number: 4307552
    Abstract: For obtaining a roofing element of the slate type, a synthetic material such as polyethylene, polypropylene or polyvinylchloride is mixed with a charge, such as chalk, kaolin, dolomite, talc, and with carbon black. The proportion by weight of synthetic material is between 30 and 60%, whereas that of the charge is between 20 and 60% and that of the carbon black is between 0.5 and 5%. The mixture is extruded and then calendered.
    Type: Grant
    Filed: October 4, 1979
    Date of Patent: December 29, 1981
    Inventor: Andre T. Votte