Patents by Inventor Andre Hettler

Andre Hettler 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).

  • Method of casting of molten metals
    Patent number: 3951201
    Abstract: A method of casting an ingot which comprises locating in an ingot mould a vertical tube of fibrous heat-insulating material of melting point less than the casting temperature of the metal of the ingot, and teeming molten metal into the mould.
    Type: Grant
    Filed: February 28, 1974
    Date of Patent: April 20, 1976
    Assignee: Foseco International Limited
    Inventors: Francois Dunhem, Andre Hettler