Patents by Inventor Erik V. M. De Visser

Erik V. M. De Visser 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).

  • Skimmer for a body of liquid with floating solids
    Patent number: 4032449
    Abstract: Skimmer apparatus for a pond or reservoir where the surface layer contains frangible solid matter. It employs a weir structure with a curved edge, and a pair of arms having interlocking teeth extending radially from the edge. One arm is stationary and one rotates so that the interlocking positions of the teeth will break up the solid matter.
    Type: Grant
    Filed: March 24, 1976
    Date of Patent: June 28, 1977
    Assignee: S.A. Texaco Belgium N.V.
    Inventors: Erik V. M. De Visser, Karel I. Ghyselen