Patents by Inventor Pleun Meerkerk

Pleun Meerkerk 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).

  • Revetment for a bank
    Patent number: 6811352
    Abstract: A revetment for bank, water-retaining structure and the like includes elements made of concrete or a similar material, which elements are approximately prismatic in the height direction and each have two transverse faces and two longitudinal faces which run parallel to their height direction. One transverse face of each element is made a concave shape, and the other transverse face is made a corresponding convex shape, in such a way that the elements can rest with their transverse faces against each other in various rotated positions.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: November 2, 2004
    Assignee: Den Boer Beton Groot Ammers B.V.
    Inventor: Pleun Meerkerk