Patents by Inventor Heinz W. L. Steenken

Heinz W. L. Steenken 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).

  • Ship and pier for extraction of valuable materials from the sea bed
    Patent number: 3975841
    Abstract: Valuable materials, such as manganese, are extracted from the sea bed by pelling through the sea a buoyant body which floats on the sea and carries equipment for extracting the material from the sea bed. A pier connected to the body affords moorings for transport ships which receive the extracted material and conveyor devices associated with the pier deliver the material directly into the ships. The transport ship or ships provide part of the propulsion force for the buoyant body.
    Type: Grant
    Filed: April 15, 1975
    Date of Patent: August 24, 1976
    Assignee: Howaldtswerke-Deutsche Werft Aktiengesellschaft Hamburg und Kiel
    Inventors: Heinz W. L. Steenken, Detlef G. H. Luth