Patents by Inventor Lothar Kaden

Lothar Kaden 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 of making an improved pavement
    Patent number: 5639297
    Abstract: A method of making a pavement by installing a heat insulating course of lightweight concrete of low thermal conductivity includes crushing polystyrene foam, especially polystyrene foam waste, or by foaming particulate polystyrene to form particulate polystyrene foam which is then subjected to a rapid heating process. The heat-treated particles of polystyrene foam are blended with a cement paste comprised of cement and water to form a mixture which is then allowed to harden.
    Type: Grant
    Filed: March 2, 1995
    Date of Patent: June 17, 1997
    Inventors: Markus Stracke, Lothar Kaden