Patents by Inventor Peter N. Looijen

Peter N. Looijen 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).

  • Soil sampler
    Patent number: 6505693
    Abstract: An apparatus for taking a soil sample includes a drill pipe, a first driving gear for introducing the drill pipe into the soil, a sampling bush which movably fits into the drill pipe and a second driving gear for introducing the sampling bush into the soil.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: January 14, 2003
    Assignee: Fugro Engineers B.V.
    Inventors: Peter N. Looijen, Herman M. Zuidberg