Patents by Inventor Lambertus Antonius Maria Panwijk

Lambertus Antonius Maria Panwijk 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).

  • Process for removing contaminants from contaminated soil
    Patent number: 7704014
    Abstract: The invention relates to a process for removing contaminants from contaminated soil with the aid of a stripping gas. In the process a biologically active layer is present in or on the soil. The process comprises the following steps: a) there is created in the soil a medium whose resistance is lower than the resistance of the surrounding soil, b) the stripping gas is injected in the soil at the depth of and/or beneath the contaminant, c) the contaminants are volatized with the stripping gas, whereupon the stripping gas with the contaminants largely flows to the biologically active layer via the medium whose resistance is lower than the surrounding soil.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: April 27, 2010
    Assignee: Terreco Holding B.V.
    Inventors: Laurentinus Wilhelmus Steenbakkers, Dominicus Richardus Johannes Grootjen, Lambertus Antonius Maria Panwijk, Martin Williem Jozef Plum