Patents by Inventor Cornelis J. R. Groenenberg

Cornelis J. R. Groenenberg 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).

  • Centrifugal casting of metal matrix composites
    Patent number: 5002115
    Abstract: A process for the casting of shaped objects by subjecting a mould to a centrifugal acceleration directed to the bottom of the mould and introducing a molten pure metal or alloy into the mould, wherein a dispersed filler is placed before adding the melt, which filler is retained immovably during the addition of the melt by using a cover plate.
    Type: Grant
    Filed: July 5, 1989
    Date of Patent: March 26, 1991
    Assignee: Shell Internationale Research Maatschappij B.V.
    Inventors: Jan Noordegraaf, Wilfred H. H. Alsem, Cornelis J. R. Groenenberg, Cornelis Rensen