Patents by Inventor David Steven Ruijtenbeek

David Steven Ruijtenbeek 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).

  • Penetrometer
    Publication number: 20180094926
    Abstract: A penetrometer arranged for detecting a transition zone from water to sediment of a seabed, comprising a cone with a cone sleeve and a cone tip and a force sensitive element or elements, wherein the force sensitive element or elements comprise a piezo-electric sensor which is provided in contact with the cone tip so as to respond to a force or forces applied to the cone tip. The piezo-electric sensor is supported by a rim inside the cone sleeve.
    Type: Application
    Filed: October 4, 2017
    Publication date: April 5, 2018
    Inventors: Peter Nicolaas Looijen, David Steven Ruijtenbeek