Patents by Inventor Michele Robaglia

Michele Robaglia 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).

  • Extraction of metals from sea nodules
    Patent number: 4029733
    Abstract: The method comprises the steps of crushing of the ore, neutralization by a mixture of water and sulphuric acid, introduction of a controlled quantity of sulphur dioxide gas at a pH value between 1.5 and 4 for promoting dissolution of nickel, copper and a desired quantity of manganese, leaching of the ore with sulphuric acid at a pH value between 1 and 3 for selectively dissolving the nickel and copper, separation of the solid and liquid phases, and separation of the metals contained in the liquid phase.
    Type: Grant
    Filed: February 11, 1975
    Date of Patent: June 14, 1977
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Pierre Faugeras, Pierre Miquel, Michele Robaglia
  • Method of extraction of metallic elements from submarine nodules
    Patent number: 3988224
    Abstract: A hydrochloric acid leach solution is subjected to a first cycle of extraction by an organic solvent, solvent washing and stripping so that the stripping liquor contains iron, zinc, cadmium and gallium while the liquor constituted by the first raffinate at the outlet of the extraction unit mainly contains nickel, cobalt and copper. In a second extraction cycle, the stripping liquor contains copper while the second raffinate mainly contains cobalt and nickel. In a third extraction cycle, the stripping liquor contains cobalt while the third raffinate mainly contains nickel.
    Type: Grant
    Filed: December 16, 1975
    Date of Patent: October 26, 1976
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Jacques Barriere, Michele Robaglia