Patents by Inventor Michel Dauvergne

Michel Dauvergne 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).

  • Composite wire with a base of cerium and other rare earths
    Patent number: 4085252
    Abstract: The invention relates to a composite wire with a base of cerium and/or rare earths such as mischmetal and intended for insertion into a bath of molten steel so as to de-oxidize and de-sulphurize the steel. When this composite wire is inserted into molten steel, it controls certain inclusions by converting manganese sulphides to sulphides of rare earths, thereby improving the resilience characteristics of the steel. The composite wire is obtained by enclosing the mischmetal wire in a metallic sheath. The diameter of the wire, the thickness of the sheath and the speed of injection are determined in accordance with characteristic curves representing particular proportional relations.
    Type: Grant
    Filed: April 16, 1976
    Date of Patent: April 18, 1978
    Assignee: L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Pierre Karinthi, Michel Dauvergne, Benoit Hirschauer