Patents by Inventor Johannes L. van de Velde

Johannes L. van de Velde 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 cellularly isolating, treating and/or removing strongly polluted material present in or on the soil
    Patent number: 4981393
    Abstract: Polluted material contained in, or lying on the ground is isolated, treated in situ and/or removed by(a) placing laterally closed, hollow piles in the soil according to a lattice pattern in adjoining relationship; said piles having closable top and bottom ends;(b) closing the top and bottom ends of the piles placed in the ground;(c) optionally passing a treating medium into the polluted material enclosed within a pile; and/or(d) removing the piles with the material enclosed therein from the soil and transporting them to a different location.A pile is disclosed for use in the method.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: January 1, 1991
    Assignees: Ecotechniek B. V., Heijmans Milieutechniek B. V.
    Inventors: Johannes L. van de Velde, Johannes P. van der Meer, Frederik H. M. Mischgofsky