Patents by Inventor Paul-Henri Galvin

Paul-Henri Galvin 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).

  • Process for refining crude magnesium
    Patent number: 5282882
    Abstract: The invention relates to a process for refining crude magnesium, and, in particular, the magnesium obtained by reducing the magnesium ore using iron-silicon.The process consists in treating the liquid magnesium with a metallic sulphide such as iron monosulphide, iron bisulphide or molybdenum bisulphide.The sulphides are contacted with the metallic bath which is agitated to promote the liquid-solid reactions and the formation of insoluble products which precipitate.This contacting is followed by decantation of the insoluble products and their separation from the refined magnesium.The process permits a significant reduction in the contents of calcium and silicon.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: February 1, 1994
    Assignee: Pechiney Electrometallurgie
    Inventors: Paul-Henri Galvin, Jean-Pierre Bessaguet