Patents by Inventor René Broeder

René Broeder 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, system and device for building a wall in the ground
    Patent number: 6357965
    Abstract: A wall is built in the ground by pulling a wall building device having cross-sectional dimensions which are substantially equal to the dimensions of at least a part of the cross-section of the wall through the ground, at least a part of the wall being formed by injecting a hardenable material behind the wall building device. A tunnel is made by first making a tunnel wall, leaving the ground inside the tunnel wall substantially intact, followed by excavating the ground inside the tunnel wall.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: March 19, 2002
    Assignee: Heerema Ondergrondse Infrastructuren B.V.
    Inventors: Marinus Chr. Lammertink, Rutger Chr. van Voorden, René Broeder