Patents by Inventor Willem Jan Lucieer

Willem Jan Lucieer 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).

  • Device for creating a local water flow
    Patent number: 6053663
    Abstract: A device for creating a localized water jet within a body of water allows for the displacement of material from the floor of the body of water. The device includes two powered screws within a jet pipe. The screws are arranged coaxially and their direction of rotation, pitch, and speed of rotation are arranged such that the torque produced by one of the screws tends to counteract the torque produced by the other, allowing for improved control of the device.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: April 25, 2000
    Inventors: Jacob Jan Dikken, Paul Smit, Hector Filippus Alexander Van Denham-Susman, Kenneth Roderick Stewart, Gerard Louis Marie Van Der Schrieck, Willem Jan Lucieer