Patents by Inventor Charles P. Aubin

Charles P. Aubin 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).

  • Countergravity casting using particulate filled vacuum chambers
    Patent number: 4971131
    Abstract: Particulate mold material, such as binderless foundry sand, is vacuumed upwardly from a particulate bed into an open bottom container about one or more gas permeable molds or destructible patterns in the container to form a casting assembly adapted for immersion in an underlying molten metal pool to effect countergravity casting of molten metal.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: November 20, 1990
    Assignee: General Motors Corporation
    Inventors: Charles P. Aubin, Joseph A. Knapke, John G. Kubisch