Patents by Inventor Menno Leling

Menno Leling 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).

  • Shaped (concrete) block for retaining walls and also a retaining wall
    Patent number: 4711606
    Abstract: A retaining wall (20) of shaped blocks (22) arranged one above the other in layers (43, 58, 62) is defined with respect to the stability by the seating width and the core cross-section determined from the latter. By maximizing seating surfaces (27, 38 . . . ) of the shaped blocks resting one above the other, the seating width which is a decisive factor for determining the core cross-section is considerably increased.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: December 8, 1987
    Assignee: SF-Vollverbundstein-Kooperation GmbH
    Inventors: Menno Leling, Gerhard Hagenah