Patents by Inventor Alain R. Leonnard

Alain R. Leonnard 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).

  • Regeneration of nickel-based superalloy parts damaged by creep
    Patent number: 4753686
    Abstract: Method for the regeneration of machine parts of a nickel-based alloy, such as turbo-machine blades having reached the end of their useful operational life as a consequence of damage by creep in particular, consisting in holding the part for at least 1 hour at a temperature sufficient to redissolve a volumetric fraction of at least 50% of the .gamma.' phase, then controlling its precipitation by controlling the rate of cooling so as to regenerate its microstructural morphology.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: June 28, 1988
    Assignee: Societe Nationale d'Etude et de Construction de Moteur d'Aviation "S.N.E.C.M.A."
    Inventors: Jose Company, Alain R. Leonnard