Patents by Inventor Rober Naslain

Rober Naslain 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).

  • Controlling the melt temperature during zone refining and Czochralski crystal growth by sensing the viscous torque of the melt zone during operation
    Patent number: 4176002
    Abstract: A method and apparatus for controlling a heated bath of molten material to obtain controlled solidification, wherein the molten bath is kept in constant rotational movement relative to the solid portion of the material being treated and the mechanical action due to the viscous friction which develops in the bath is detected and thereby controlled, said method being applicable to the floating zone method and the Czochralsky crystal drawing method and being capable of producing ingots of high dimensional regularity.
    Type: Grant
    Filed: April 6, 1977
    Date of Patent: November 27, 1979
    Assignee: Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventors: Jean-Michel Quenisset, Rober Naslain, Paul Hagenmuller