Patents by Inventor Robert Veldhuis

Robert Veldhuis 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 making foam/concrete building panels
    Patent number: 6352657
    Abstract: A continuous process is used to make concrete building products with an expanded polystyrene core. The expanded polystyrene is fed into the inlet of an elongated guiding channel which has a longitudinally split mold. The expanded polystyrene is guided along the guiding channel without any means for pulling the expanded polystyrene. Concrete is then pumped into the split mold first through an first aperture in a first mold section of the split mold and then through another aperture, in a second mold section of the split mold, so that the concrete is coated on at least two opposing sides of the expanded polystyrene.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: March 5, 2002
    Assignee: 888804 Ontario Limited
    Inventors: Robert Veldhuis, Lubo Krizik